content/browser/web_contents/web_contents_impl.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/web_contents/web_contents_impl.h"
   6
   7 #include <utility>
   8
   9 #include "base/command_line.h"
  10 #include "base/lazy_instance.h"
  11 #include "base/logging.h"
  12 #include "base/metrics/histogram.h"
  13 #include "base/process/process.h"
  14 #include "base/profiler/scoped_tracker.h"
  15 #include "base/strings/string16.h"
  16 #include "base/strings/string_number_conversions.h"
  17 #include "base/strings/string_util.h"
  18 #include "base/strings/utf_string_conversions.h"
  19 #include "base/time/time.h"
  20 #include "base/trace_event/trace_event.h"
  21 #include "content/browser/accessibility/accessibility_mode_helper.h"
  22 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
  23 #include "content/browser/bad_message.h"
  24 #include "content/browser/browser_plugin/browser_plugin_embedder.h"
  25 #include "content/browser/browser_plugin/browser_plugin_guest.h"
  26 #include "content/browser/child_process_security_policy_impl.h"
  27 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
  28 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
  29 #include "content/browser/download/download_stats.h"
  30 #include "content/browser/download/mhtml_generation_manager.h"
  31 #include "content/browser/download/save_package.h"
  32 #include "content/browser/frame_host/cross_process_frame_connector.h"
  33 #include "content/browser/frame_host/interstitial_page_impl.h"
  34 #include "content/browser/frame_host/navigation_entry_impl.h"
  35 #include "content/browser/frame_host/navigator_impl.h"
  36 #include "content/browser/frame_host/render_frame_host_impl.h"
  37 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
  38 #include "content/browser/geolocation/geolocation_service_context.h"
  39 #include "content/browser/host_zoom_map_impl.h"
  40 #include "content/browser/loader/resource_dispatcher_host_impl.h"
  41 #include "content/browser/manifest/manifest_manager_host.h"
  42 #include "content/browser/media/audio_stream_monitor.h"
  43 #include "content/browser/media/capture/web_contents_audio_muter.h"
  44 #include "content/browser/message_port_message_filter.h"
  45 #include "content/browser/plugin_content_origin_whitelist.h"
  46 #include "content/browser/power_save_blocker_impl.h"
  47 #include "content/browser/renderer_host/render_process_host_impl.h"
  48 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  49 #include "content/browser/renderer_host/render_view_host_impl.h"
  50 #include "content/browser/renderer_host/render_widget_host_impl.h"
  51 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  52 #include "content/browser/screen_orientation/screen_orientation_dispatcher_host_impl.h"
  53 #include "content/browser/site_instance_impl.h"
  54 #include "content/browser/web_contents/web_contents_view_guest.h"
  55 #include "content/browser/webui/generic_handler.h"
  56 #include "content/browser/webui/web_ui_controller_factory_registry.h"
  57 #include "content/browser/webui/web_ui_impl.h"
  58 #include "content/common/browser_plugin/browser_plugin_constants.h"
  59 #include "content/common/browser_plugin/browser_plugin_messages.h"
  60 #include "content/common/frame_messages.h"
  61 #include "content/common/image_messages.h"
  62 #include "content/common/input_messages.h"
  63 #include "content/common/ssl_status_serialization.h"
  64 #include "content/common/view_messages.h"
  65 #include "content/public/browser/ax_event_notification_details.h"
  66 #include "content/public/browser/browser_context.h"
  67 #include "content/public/browser/browser_plugin_guest_manager.h"
  68 #include "content/public/browser/content_browser_client.h"
  69 #include "content/public/browser/devtools_agent_host.h"
  70 #include "content/public/browser/download_manager.h"
  71 #include "content/public/browser/download_url_parameters.h"
  72 #include "content/public/browser/invalidate_type.h"
  73 #include "content/public/browser/javascript_dialog_manager.h"
  74 #include "content/public/browser/load_from_memory_cache_details.h"
  75 #include "content/public/browser/load_notification_details.h"
  76 #include "content/public/browser/navigation_details.h"
  77 #include "content/public/browser/notification_details.h"
  78 #include "content/public/browser/notification_service.h"
  79 #include "content/public/browser/render_widget_host_iterator.h"
  80 #include "content/public/browser/resource_request_details.h"
  81 #include "content/public/browser/screen_orientation_dispatcher_host.h"
  82 #include "content/public/browser/storage_partition.h"
  83 #include "content/public/browser/user_metrics.h"
  84 #include "content/public/browser/web_contents_delegate.h"
  85 #include "content/public/browser/web_contents_observer.h"
  86 #include "content/public/common/bindings_policy.h"
  87 #include "content/public/common/content_constants.h"
  88 #include "content/public/common/content_switches.h"
  89 #include "content/public/common/page_zoom.h"
  90 #include "content/public/common/result_codes.h"
  91 #include "content/public/common/url_constants.h"
  92 #include "content/public/common/url_utils.h"
  93 #include "content/public/common/web_preferences.h"
  94 #include "net/base/mime_util.h"
  95 #include "net/base/net_util.h"
  96 #include "net/http/http_cache.h"
  97 #include "net/http/http_transaction_factory.h"
  98 #include "net/url_request/url_request_context.h"
  99 #include "net/url_request/url_request_context_getter.h"
 100 #include "ui/base/layout.h"
 101 #include "ui/gfx/display.h"
 102 #include "ui/gfx/screen.h"
 103 #include "ui/gl/gl_switches.h"
 104
 105 #if defined(ENABLE_BROWSER_CDMS)
 106 #include "content/browser/media/media_web_contents_observer.h"
 107 #endif
 108
 109 #if defined(OS_ANDROID)
 110 #include "content/browser/android/content_video_view.h"
 111 #include "content/browser/android/date_time_chooser_android.h"
 112 #include "content/browser/android/media_players_observer.h"
 113 #include "content/browser/media/android/browser_media_player_manager.h"
 114 #include "content/browser/web_contents/web_contents_android.h"
 115 #endif
 116
 117 #if defined(OS_MACOSX)
 118 #include "base/mac/foundation_util.h"
 119 #endif
 120
 121 namespace content {
 122 namespace {
 123
 124 const int kMinimumDelayBetweenLoadingUpdatesMS = 100;
 125 const char kDotGoogleDotCom[] = ".google.com";
 126
 127 #if defined(OS_ANDROID)
 128 const char kWebContentsAndroidKey[] = "web_contents_android";
 129 #endif  // OS_ANDROID
 130
 131 base::LazyInstance<std::vector<WebContentsImpl::CreatedCallback> >
 132 g_created_callbacks = LAZY_INSTANCE_INITIALIZER;
 133
 134 static int StartDownload(RenderFrameHost* rfh,
 135                          const GURL& url,
 136                          bool is_favicon,
 137                          uint32_t max_bitmap_size,
 138                          bool bypass_cache) {
 139   static int g_next_image_download_id = 0;
 140   rfh->Send(new ImageMsg_DownloadImage(rfh->GetRoutingID(),
 141                                        ++g_next_image_download_id,
 142                                        url,
 143                                        is_favicon,
 144                                        max_bitmap_size,
 145                                        bypass_cache));
 146   return g_next_image_download_id;
 147 }
 148
 149 void NotifyCacheOnIO(
 150     scoped_refptr<net::URLRequestContextGetter> request_context,
 151     const GURL& url,
 152     const std::string& http_method) {
 153   net::HttpCache* cache = request_context->GetURLRequestContext()->
 154       http_transaction_factory()->GetCache();
 155   if (cache)
 156     cache->OnExternalCacheHit(url, http_method);
 157 }
 158
 159 // Helper function for retrieving all the sites in a frame tree.
 160 bool CollectSites(BrowserContext* context,
 161                   std::set<GURL>* sites,
 162                   FrameTreeNode* node) {
 163   sites->insert(SiteInstance::GetSiteForURL(context, node->current_url()));
 164   return true;
 165 }
 166
 167 bool ForEachFrameInternal(
 168     const base::Callback<void(RenderFrameHost*)>& on_frame,
 169     FrameTreeNode* node) {
 170   on_frame.Run(node->current_frame_host());
 171   return true;
 172 }
 173
 174 bool ForEachPendingFrameInternal(
 175     const base::Callback<void(RenderFrameHost*)>& on_frame,
 176     FrameTreeNode* node) {
 177   RenderFrameHost* pending_frame_host =
 178       node->render_manager()->pending_frame_host();
 179   if (pending_frame_host)
 180     on_frame.Run(pending_frame_host);
 181   return true;
 182 }
 183
 184 void SendToAllFramesInternal(IPC::Message* message, RenderFrameHost* rfh) {
 185   IPC::Message* message_copy = new IPC::Message(*message);
 186   message_copy->set_routing_id(rfh->GetRoutingID());
 187   rfh->Send(message_copy);
 188 }
 189
 190 void AddRenderWidgetHostViewToSet(std::set<RenderWidgetHostView*>* set,
 191                                   RenderFrameHost* rfh) {
 192   RenderWidgetHostView* rwhv = static_cast<RenderFrameHostImpl*>(rfh)
 193                                    ->frame_tree_node()
 194                                    ->render_manager()
 195                                    ->GetRenderWidgetHostView();
 196   set->insert(rwhv);
 197 }
 198
 199 void SetAccessibilityModeOnFrame(AccessibilityMode mode,
 200                                  RenderFrameHost* frame_host) {
 201   static_cast<RenderFrameHostImpl*>(frame_host)->SetAccessibilityMode(mode);
 202 }
 203
 204 }  // namespace
 205
 206 WebContents* WebContents::Create(const WebContents::CreateParams& params) {
 207   return WebContentsImpl::CreateWithOpener(
 208       params, static_cast<WebContentsImpl*>(params.opener));
 209 }
 210
 211 WebContents* WebContents::CreateWithSessionStorage(
 212     const WebContents::CreateParams& params,
 213     const SessionStorageNamespaceMap& session_storage_namespace_map) {
 214   WebContentsImpl* new_contents = new WebContentsImpl(
 215       params.browser_context, NULL);
 216
 217   for (SessionStorageNamespaceMap::const_iterator it =
 218            session_storage_namespace_map.begin();
 219        it != session_storage_namespace_map.end();
 220        ++it) {
 221     new_contents->GetController()
 222         .SetSessionStorageNamespace(it->first, it->second.get());
 223   }
 224
 225   new_contents->Init(params);
 226   return new_contents;
 227 }
 228
 229 void WebContentsImpl::FriendZone::AddCreatedCallbackForTesting(
 230     const CreatedCallback& callback) {
 231   g_created_callbacks.Get().push_back(callback);
 232 }
 233
 234 void WebContentsImpl::FriendZone::RemoveCreatedCallbackForTesting(
 235     const CreatedCallback& callback) {
 236   for (size_t i = 0; i < g_created_callbacks.Get().size(); ++i) {
 237     if (g_created_callbacks.Get().at(i).Equals(callback)) {
 238       g_created_callbacks.Get().erase(g_created_callbacks.Get().begin() + i);
 239       return;
 240     }
 241   }
 242 }
 243
 244 WebContents* WebContents::FromRenderViewHost(const RenderViewHost* rvh) {
 245   return rvh->GetDelegate()->GetAsWebContents();
 246 }
 247
 248 WebContents* WebContents::FromRenderFrameHost(RenderFrameHost* rfh) {
 249   RenderFrameHostImpl* rfh_impl = static_cast<RenderFrameHostImpl*>(rfh);
 250   if (!rfh_impl)
 251     return NULL;
 252   return rfh_impl->delegate()->GetAsWebContents();
 253 }
 254
 255 // WebContentsImpl::DestructionObserver ----------------------------------------
 256
 257 class WebContentsImpl::DestructionObserver : public WebContentsObserver {
 258  public:
 259   DestructionObserver(WebContentsImpl* owner, WebContents* watched_contents)
 260       : WebContentsObserver(watched_contents),
 261         owner_(owner) {
 262   }
 263
 264   // WebContentsObserver:
 265   void WebContentsDestroyed() override {
 266     owner_->OnWebContentsDestroyed(
 267         static_cast<WebContentsImpl*>(web_contents()));
 268   }
 269
 270  private:
 271   WebContentsImpl* owner_;
 272
 273   DISALLOW_COPY_AND_ASSIGN(DestructionObserver);
 274 };
 275
 276 WebContentsImpl::ColorChooserInfo::ColorChooserInfo(int render_process_id,
 277                                                     int render_frame_id,
 278                                                     ColorChooser* chooser,
 279                                                     int identifier)
 280     : render_process_id(render_process_id),
 281       render_frame_id(render_frame_id),
 282       chooser(chooser),
 283       identifier(identifier) {
 284 }
 285
 286 WebContentsImpl::ColorChooserInfo::~ColorChooserInfo() {
 287 }
 288
 289 // WebContentsImpl -------------------------------------------------------------
 290
 291 WebContentsImpl::WebContentsImpl(BrowserContext* browser_context,
 292                                  WebContentsImpl* opener)
 293     : delegate_(NULL),
 294       controller_(this, browser_context),
 295       render_view_host_delegate_view_(NULL),
 296       opener_(opener),
 297       created_with_opener_(!!opener),
 298 #if defined(OS_WIN)
 299       accessible_parent_(NULL),
 300 #endif
 301       frame_tree_(new NavigatorImpl(&controller_, this),
 302                   this,
 303                   this,
 304                   this,
 305                   this),
 306       is_loading_(false),
 307       is_load_to_different_document_(false),
 308       crashed_status_(base::TERMINATION_STATUS_STILL_RUNNING),
 309       crashed_error_code_(0),
 310       waiting_for_response_(false),
 311       load_state_(net::LOAD_STATE_IDLE, base::string16()),
 312       upload_size_(0),
 313       upload_position_(0),
 314       displayed_insecure_content_(false),
 315       has_accessed_initial_document_(false),
 316       theme_color_(SK_ColorTRANSPARENT),
 317       last_sent_theme_color_(SK_ColorTRANSPARENT),
 318       capturer_count_(0),
 319       should_normally_be_visible_(true),
 320       is_being_destroyed_(false),
 321       notify_disconnection_(false),
 322       dialog_manager_(NULL),
 323       is_showing_before_unload_dialog_(false),
 324       last_active_time_(base::TimeTicks::Now()),
 325       closed_by_user_gesture_(false),
 326       minimum_zoom_percent_(static_cast<int>(kMinimumZoomFactor * 100)),
 327       maximum_zoom_percent_(static_cast<int>(kMaximumZoomFactor * 100)),
 328       render_view_message_source_(NULL),
 329       render_frame_message_source_(NULL),
 330       fullscreen_widget_routing_id_(MSG_ROUTING_NONE),
 331       fullscreen_widget_had_focus_at_shutdown_(false),
 332       is_subframe_(false),
 333       force_disable_overscroll_content_(false),
 334       last_dialog_suppressed_(false),
 335       geolocation_service_context_(new GeolocationServiceContext()),
 336       accessibility_mode_(
 337           BrowserAccessibilityStateImpl::GetInstance()->accessibility_mode()),
 338       virtual_keyboard_requested_(false),
 339       loading_weak_factory_(this) {
 340   frame_tree_.SetFrameRemoveListener(
 341       base::Bind(&WebContentsImpl::OnFrameRemoved,
 342                  base::Unretained(this)));
 343 #if defined(ENABLE_BROWSER_CDMS)
 344   media_web_contents_observer_.reset(new MediaWebContentsObserver(this));
 345 #endif
 346
 347 #if defined(OS_ANDROID)
 348   audio_state_provider_.reset(new MediaPlayersObserver(this));
 349 #else
 350   audio_state_provider_.reset(new AudioStreamMonitor(this));
 351 #endif
 352 }
 353
 354 WebContentsImpl::~WebContentsImpl() {
 355   is_being_destroyed_ = true;
 356
 357   // Delete all RFH pending shutdown, which will lead the corresponding RVH to
 358   // shutdown and be deleted as well.
 359   frame_tree_.ForEach(
 360       base::Bind(&RenderFrameHostManager::ClearRFHsPendingShutdown));
 361
 362   ClearAllPowerSaveBlockers();
 363
 364   for (std::set<RenderWidgetHostImpl*>::iterator iter =
 365            created_widgets_.begin(); iter != created_widgets_.end(); ++iter) {
 366     (*iter)->DetachDelegate();
 367   }
 368   created_widgets_.clear();
 369
 370   // Clear out any JavaScript state.
 371   if (dialog_manager_)
 372     dialog_manager_->ResetDialogState(this);
 373
 374   if (color_chooser_info_.get())
 375     color_chooser_info_->chooser->End();
 376
 377   NotifyDisconnected();
 378
 379   // Notify any observer that have a reference on this WebContents.
 380   NotificationService::current()->Notify(
 381       NOTIFICATION_WEB_CONTENTS_DESTROYED,
 382       Source<WebContents>(this),
 383       NotificationService::NoDetails());
 384
 385   // Destroy all frame tree nodes except for the root; this notifies observers.
 386   frame_tree_.ResetForMainFrameSwap();
 387   GetRenderManager()->ResetProxyHosts();
 388
 389   // Manually call the observer methods for the root frame tree node.
 390   RenderFrameHostManager* root = GetRenderManager();
 391
 392   if (root->pending_frame_host())
 393     root->pending_frame_host()->SetRenderFrameCreated(false);
 394   root->current_frame_host()->SetRenderFrameCreated(false);
 395
 396   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
 397                     FrameDeleted(root->current_frame_host()));
 398
 399   if (root->pending_render_view_host()) {
 400     FOR_EACH_OBSERVER(WebContentsObserver,
 401                       observers_,
 402                       RenderViewDeleted(root->pending_render_view_host()));
 403   }
 404
 405   FOR_EACH_OBSERVER(WebContentsObserver,
 406                     observers_,
 407                     RenderViewDeleted(root->current_host()));
 408
 409   FOR_EACH_OBSERVER(WebContentsObserver,
 410                     observers_,
 411                     WebContentsDestroyed());
 412
 413   FOR_EACH_OBSERVER(WebContentsObserver,
 414                     observers_,
 415                     ResetWebContents());
 416
 417   SetDelegate(NULL);
 418
 419   STLDeleteContainerPairSecondPointers(destruction_observers_.begin(),
 420                                        destruction_observers_.end());
 421 }
 422
 423 WebContentsImpl* WebContentsImpl::CreateWithOpener(
 424     const WebContents::CreateParams& params,
 425     WebContentsImpl* opener) {
 426   TRACE_EVENT0("browser", "WebContentsImpl::CreateWithOpener");
 427   WebContentsImpl* new_contents = new WebContentsImpl(
 428       params.browser_context, params.opener_suppressed ? NULL : opener);
 429
 430   if (params.guest_delegate) {
 431     // This makes |new_contents| act as a guest.
 432     // For more info, see comment above class BrowserPluginGuest.
 433     BrowserPluginGuest::Create(new_contents, params.guest_delegate);
 434     // We are instantiating a WebContents for browser plugin. Set its subframe
 435     // bit to true.
 436     new_contents->is_subframe_ = true;
 437   }
 438   new_contents->Init(params);
 439   return new_contents;
 440 }
 441
 442 // static
 443 std::vector<WebContentsImpl*> WebContentsImpl::GetAllWebContents() {
 444   std::vector<WebContentsImpl*> result;
 445   scoped_ptr<RenderWidgetHostIterator> widgets(
 446       RenderWidgetHostImpl::GetRenderWidgetHosts());
 447   std::set<WebContentsImpl*> web_contents_set;
 448   while (RenderWidgetHost* rwh = widgets->GetNextHost()) {
 449     if (!rwh->IsRenderView())
 450       continue;
 451     RenderViewHost* rvh = RenderViewHost::From(rwh);
 452     if (!rvh)
 453       continue;
 454     WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
 455     if (!web_contents)
 456       continue;
 457     WebContentsImpl* wci = static_cast<WebContentsImpl*>(web_contents);
 458     if (web_contents_set.find(wci) == web_contents_set.end()) {
 459       web_contents_set.insert(wci);
 460       result.push_back(wci);
 461     }
 462   }
 463   return result;
 464 }
 465
 466 RenderFrameHostManager* WebContentsImpl::GetRenderManagerForTesting() {
 467   return GetRenderManager();
 468 }
 469
 470 bool WebContentsImpl::OnMessageReceived(RenderViewHost* render_view_host,
 471                                         const IPC::Message& message) {
 472   return OnMessageReceived(render_view_host, NULL, message);
 473 }
 474
 475 bool WebContentsImpl::OnMessageReceived(RenderViewHost* render_view_host,
 476                                         RenderFrameHost* render_frame_host,
 477                                         const IPC::Message& message) {
 478   DCHECK(render_view_host || render_frame_host);
 479   if (GetWebUI() &&
 480       static_cast<WebUIImpl*>(GetWebUI())->OnMessageReceived(message)) {
 481     return true;
 482   }
 483
 484   ObserverListBase<WebContentsObserver>::Iterator it(&observers_);
 485   WebContentsObserver* observer;
 486   if (render_frame_host) {
 487     while ((observer = it.GetNext()) != NULL)
 488       if (observer->OnMessageReceived(message, render_frame_host))
 489         return true;
 490   } else {
 491     while ((observer = it.GetNext()) != NULL)
 492       if (observer->OnMessageReceived(message))
 493         return true;
 494   }
 495
 496   // Message handlers should be aware of which
 497   // RenderViewHost/RenderFrameHost sent the message, which is temporarily
 498   // stored in render_(view|frame)_message_source_.
 499   if (render_frame_host)
 500     render_frame_message_source_ = render_frame_host;
 501   else
 502     render_view_message_source_ = render_view_host;
 503
 504   bool handled = true;
 505   IPC_BEGIN_MESSAGE_MAP(WebContentsImpl, message)
 506     IPC_MESSAGE_HANDLER(FrameHostMsg_DomOperationResponse,
 507                         OnDomOperationResponse)
 508     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeThemeColor,
 509                         OnThemeColorChanged)
 510     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFinishDocumentLoad,
 511                         OnDocumentLoadedInFrame)
 512     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFinishLoad, OnDidFinishLoad)
 513     IPC_MESSAGE_HANDLER(FrameHostMsg_OpenColorChooser, OnOpenColorChooser)
 514     IPC_MESSAGE_HANDLER(FrameHostMsg_EndColorChooser, OnEndColorChooser)
 515     IPC_MESSAGE_HANDLER(FrameHostMsg_SetSelectedColorInColorChooser,
 516                         OnSetSelectedColorInColorChooser)
 517     IPC_MESSAGE_HANDLER(FrameHostMsg_MediaPlayingNotification,
 518                         OnMediaPlayingNotification)
 519     IPC_MESSAGE_HANDLER(FrameHostMsg_MediaPausedNotification,
 520                         OnMediaPausedNotification)
 521     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFirstVisuallyNonEmptyPaint,
 522                         OnFirstVisuallyNonEmptyPaint)
 523     IPC_MESSAGE_HANDLER(ViewHostMsg_DidLoadResourceFromMemoryCache,
 524                         OnDidLoadResourceFromMemoryCache)
 525     IPC_MESSAGE_HANDLER(ViewHostMsg_DidDisplayInsecureContent,
 526                         OnDidDisplayInsecureContent)
 527     IPC_MESSAGE_HANDLER(ViewHostMsg_DidRunInsecureContent,
 528                         OnDidRunInsecureContent)
 529     IPC_MESSAGE_HANDLER(ViewHostMsg_GoToEntryAtOffset, OnGoToEntryAtOffset)
 530     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateZoomLimits, OnUpdateZoomLimits)
 531     IPC_MESSAGE_HANDLER(ViewHostMsg_EnumerateDirectory, OnEnumerateDirectory)
 532     IPC_MESSAGE_HANDLER(ViewHostMsg_RegisterProtocolHandler,
 533                         OnRegisterProtocolHandler)
 534     IPC_MESSAGE_HANDLER(ViewHostMsg_UnregisterProtocolHandler,
 535                         OnUnregisterProtocolHandler)
 536     IPC_MESSAGE_HANDLER(ViewHostMsg_Find_Reply, OnFindReply)
 537     IPC_MESSAGE_HANDLER(ViewHostMsg_AppCacheAccessed, OnAppCacheAccessed)
 538     IPC_MESSAGE_HANDLER(ViewHostMsg_WebUISend, OnWebUISend)
 539 #if defined(ENABLE_PLUGINS)
 540     IPC_MESSAGE_HANDLER(FrameHostMsg_PepperPluginHung, OnPepperPluginHung)
 541     IPC_MESSAGE_HANDLER(FrameHostMsg_PluginCrashed, OnPluginCrashed)
 542     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestPpapiBrokerPermission,
 543                         OnRequestPpapiBrokerPermission)
 544     IPC_MESSAGE_HANDLER_GENERIC(BrowserPluginHostMsg_Attach,
 545                                 OnBrowserPluginMessage(render_frame_host,
 546                                                        message))
 547 #endif
 548     IPC_MESSAGE_HANDLER(ImageHostMsg_DidDownloadImage, OnDidDownloadImage)
 549     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateFaviconURL, OnUpdateFaviconURL)
 550     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowValidationMessage,
 551                         OnShowValidationMessage)
 552     IPC_MESSAGE_HANDLER(ViewHostMsg_HideValidationMessage,
 553                         OnHideValidationMessage)
 554     IPC_MESSAGE_HANDLER(ViewHostMsg_MoveValidationMessage,
 555                         OnMoveValidationMessage)
 556 #if defined(OS_ANDROID)
 557     IPC_MESSAGE_HANDLER(ViewHostMsg_FindMatchRects_Reply,
 558                         OnFindMatchRectsReply)
 559     IPC_MESSAGE_HANDLER(ViewHostMsg_OpenDateTimeDialog,
 560                         OnOpenDateTimeDialog)
 561 #endif
 562     IPC_MESSAGE_UNHANDLED(handled = false)
 563   IPC_END_MESSAGE_MAP()
 564   render_view_message_source_ = NULL;
 565   render_frame_message_source_ = NULL;
 566
 567   return handled;
 568 }
 569
 570 bool WebContentsImpl::HasValidFrameSource() {
 571   if (!render_frame_message_source_) {
 572     DCHECK(render_view_message_source_);
 573     bad_message::ReceivedBadMessage(GetRenderProcessHost(),
 574                                     bad_message::WC_INVALID_FRAME_SOURCE);
 575     return false;
 576   }
 577
 578   return true;
 579 }
 580
 581 void WebContentsImpl::RunFileChooser(
 582     RenderViewHost* render_view_host,
 583     const FileChooserParams& params) {
 584   if (delegate_)
 585     delegate_->RunFileChooser(this, params);
 586 }
 587
 588 NavigationControllerImpl& WebContentsImpl::GetController() {
 589   return controller_;
 590 }
 591
 592 const NavigationControllerImpl& WebContentsImpl::GetController() const {
 593   return controller_;
 594 }
 595
 596 BrowserContext* WebContentsImpl::GetBrowserContext() const {
 597   return controller_.GetBrowserContext();
 598 }
 599
 600 const GURL& WebContentsImpl::GetURL() const {
 601   // We may not have a navigation entry yet.
 602   NavigationEntry* entry = controller_.GetVisibleEntry();
 603   return entry ? entry->GetVirtualURL() : GURL::EmptyGURL();
 604 }
 605
 606 const GURL& WebContentsImpl::GetVisibleURL() const {
 607   // We may not have a navigation entry yet.
 608   NavigationEntry* entry = controller_.GetVisibleEntry();
 609   return entry ? entry->GetVirtualURL() : GURL::EmptyGURL();
 610 }
 611
 612 const GURL& WebContentsImpl::GetLastCommittedURL() const {
 613   // We may not have a navigation entry yet.
 614   NavigationEntry* entry = controller_.GetLastCommittedEntry();
 615   return entry ? entry->GetVirtualURL() : GURL::EmptyGURL();
 616 }
 617
 618 WebContentsDelegate* WebContentsImpl::GetDelegate() {
 619   return delegate_;
 620 }
 621
 622 void WebContentsImpl::SetDelegate(WebContentsDelegate* delegate) {
 623   // TODO(cbentzel): remove this debugging code?
 624   if (delegate == delegate_)
 625     return;
 626   if (delegate_)
 627     delegate_->Detach(this);
 628   delegate_ = delegate;
 629   if (delegate_) {
 630     delegate_->Attach(this);
 631     // Ensure the visible RVH reflects the new delegate's preferences.
 632     if (view_)
 633       view_->SetOverscrollControllerEnabled(CanOverscrollContent());
 634   }
 635 }
 636
 637 RenderProcessHost* WebContentsImpl::GetRenderProcessHost() const {
 638   RenderViewHostImpl* host = GetRenderManager()->current_host();
 639   return host ? host->GetProcess() : NULL;
 640 }
 641
 642 RenderFrameHostImpl* WebContentsImpl::GetMainFrame() {
 643   return frame_tree_.root()->current_frame_host();
 644 }
 645
 646 RenderFrameHost* WebContentsImpl::GetFocusedFrame() {
 647   if (!frame_tree_.GetFocusedFrame())
 648     return NULL;
 649   return frame_tree_.GetFocusedFrame()->current_frame_host();
 650 }
 651
 652 void WebContentsImpl::ForEachFrame(
 653     const base::Callback<void(RenderFrameHost*)>& on_frame) {
 654   frame_tree_.ForEach(base::Bind(&ForEachFrameInternal, on_frame));
 655 }
 656
 657 void WebContentsImpl::SendToAllFrames(IPC::Message* message) {
 658   ForEachFrame(base::Bind(&SendToAllFramesInternal, message));
 659   delete message;
 660 }
 661
 662 RenderViewHostImpl* WebContentsImpl::GetRenderViewHost() const {
 663   return GetRenderManager()->current_host();
 664 }
 665
 666 int WebContentsImpl::GetRoutingID() const {
 667   if (!GetRenderViewHost())
 668     return MSG_ROUTING_NONE;
 669
 670   return GetRenderViewHost()->GetRoutingID();
 671 }
 672
 673 int WebContentsImpl::GetFullscreenWidgetRoutingID() const {
 674   return fullscreen_widget_routing_id_;
 675 }
 676
 677 RenderWidgetHostView* WebContentsImpl::GetRenderWidgetHostView() const {
 678   return GetRenderManager()->GetRenderWidgetHostView();
 679 }
 680
 681 RenderWidgetHostView* WebContentsImpl::GetFullscreenRenderWidgetHostView()
 682     const {
 683   RenderWidgetHost* const widget_host =
 684       RenderWidgetHostImpl::FromID(GetRenderProcessHost()->GetID(),
 685                                    GetFullscreenWidgetRoutingID());
 686   return widget_host ? widget_host->GetView() : NULL;
 687 }
 688
 689 WebContentsView* WebContentsImpl::GetView() const {
 690   return view_.get();
 691 }
 692
 693 SkColor WebContentsImpl::GetThemeColor() const {
 694   return theme_color_;
 695 }
 696
 697 void WebContentsImpl::SetAccessibilityMode(AccessibilityMode mode) {
 698   if (mode == accessibility_mode_)
 699     return;
 700
 701   accessibility_mode_ = mode;
 702   frame_tree_.ForEach(
 703       base::Bind(&ForEachFrameInternal,
 704                  base::Bind(&SetAccessibilityModeOnFrame, mode)));
 705   frame_tree_.ForEach(
 706       base::Bind(&ForEachPendingFrameInternal,
 707                  base::Bind(&SetAccessibilityModeOnFrame, mode)));
 708 }
 709
 710 void WebContentsImpl::AddAccessibilityMode(AccessibilityMode mode) {
 711   SetAccessibilityMode(AddAccessibilityModeTo(accessibility_mode_, mode));
 712 }
 713
 714 void WebContentsImpl::RemoveAccessibilityMode(AccessibilityMode mode) {
 715   SetAccessibilityMode(RemoveAccessibilityModeFrom(accessibility_mode_, mode));
 716 }
 717
 718 void WebContentsImpl::RequestAXTreeSnapshot(AXTreeSnapshotCallback callback) {
 719   // TODO(dmazzoni): http://crbug.com/475608 This only returns the
 720   // accessibility tree from the main frame and everything in the
 721   // same site instance.
 722   GetMainFrame()->RequestAXTreeSnapshot(callback);
 723 }
 724
 725 void WebContentsImpl::ClearNavigationTransitionData() {
 726   FrameTreeNode* node = frame_tree_.root();
 727   node->render_manager()->ClearNavigationTransitionData();
 728 }
 729
 730 WebUI* WebContentsImpl::CreateWebUI(const GURL& url) {
 731   WebUIImpl* web_ui = new WebUIImpl(this);
 732   WebUIController* controller = WebUIControllerFactoryRegistry::GetInstance()->
 733       CreateWebUIControllerForURL(web_ui, url);
 734   if (controller) {
 735     web_ui->AddMessageHandler(new GenericHandler());
 736     web_ui->SetController(controller);
 737     return web_ui;
 738   }
 739
 740   delete web_ui;
 741   return NULL;
 742 }
 743
 744 WebUI* WebContentsImpl::GetWebUI() const {
 745   return GetRenderManager()->web_ui() ? GetRenderManager()->web_ui()
 746       : GetRenderManager()->pending_web_ui();
 747 }
 748
 749 WebUI* WebContentsImpl::GetCommittedWebUI() const {
 750   return GetRenderManager()->web_ui();
 751 }
 752
 753 void WebContentsImpl::SetUserAgentOverride(const std::string& override) {
 754   if (GetUserAgentOverride() == override)
 755     return;
 756
 757   renderer_preferences_.user_agent_override = override;
 758
 759   // Send the new override string to the renderer.
 760   RenderViewHost* host = GetRenderViewHost();
 761   if (host)
 762     host->SyncRendererPrefs();
 763
 764   // Reload the page if a load is currently in progress to avoid having
 765   // different parts of the page loaded using different user agents.
 766   NavigationEntry* entry = controller_.GetVisibleEntry();
 767   if (is_loading_ && entry != NULL && entry->GetIsOverridingUserAgent())
 768     controller_.ReloadIgnoringCache(true);
 769
 770   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
 771                     UserAgentOverrideSet(override));
 772 }
 773
 774 const std::string& WebContentsImpl::GetUserAgentOverride() const {
 775   return renderer_preferences_.user_agent_override;
 776 }
 777
 778 void WebContentsImpl::EnableTreeOnlyAccessibilityMode() {
 779   AddAccessibilityMode(AccessibilityModeTreeOnly);
 780 }
 781
 782 bool WebContentsImpl::IsTreeOnlyAccessibilityModeForTesting() const {
 783   return accessibility_mode_ == AccessibilityModeTreeOnly;
 784 }
 785
 786 bool WebContentsImpl::IsFullAccessibilityModeForTesting() const {
 787   return accessibility_mode_ == AccessibilityModeComplete;
 788 }
 789
 790 #if defined(OS_WIN)
 791 void WebContentsImpl::SetParentNativeViewAccessible(
 792 gfx::NativeViewAccessible accessible_parent) {
 793   accessible_parent_ = accessible_parent;
 794   RenderFrameHostImpl* rfh = GetMainFrame();
 795   if (rfh)
 796     rfh->SetParentNativeViewAccessible(accessible_parent);
 797 }
 798 #endif
 799
 800 const base::string16& WebContentsImpl::GetTitle() const {
 801   // Transient entries take precedence. They are used for interstitial pages
 802   // that are shown on top of existing pages.
 803   NavigationEntry* entry = controller_.GetTransientEntry();
 804   std::string accept_languages =
 805       GetContentClient()->browser()->GetAcceptLangs(
 806           GetBrowserContext());
 807   if (entry) {
 808     return entry->GetTitleForDisplay(accept_languages);
 809   }
 810   WebUI* our_web_ui = GetRenderManager()->pending_web_ui() ?
 811       GetRenderManager()->pending_web_ui() : GetRenderManager()->web_ui();
 812   if (our_web_ui) {
 813     // Don't override the title in view source mode.
 814     entry = controller_.GetVisibleEntry();
 815     if (!(entry && entry->IsViewSourceMode())) {
 816       // Give the Web UI the chance to override our title.
 817       const base::string16& title = our_web_ui->GetOverriddenTitle();
 818       if (!title.empty())
 819         return title;
 820     }
 821   }
 822
 823   // We use the title for the last committed entry rather than a pending
 824   // navigation entry. For example, when the user types in a URL, we want to
 825   // keep the old page's title until the new load has committed and we get a new
 826   // title.
 827   entry = controller_.GetLastCommittedEntry();
 828
 829   // We make an exception for initial navigations.
 830   if (controller_.IsInitialNavigation()) {
 831     // We only want to use the title from the visible entry in one of two cases:
 832     // 1. There's already a committed entry for an initial navigation, in which
 833     //    case we are doing a history navigation in a new tab (e.g., Ctrl+Back).
 834     // 2. The pending entry has been explicitly assigned a title to display.
 835     //
 836     // If there's no last committed entry and no assigned title, we should fall
 837     // back to |page_title_when_no_navigation_entry_| rather than showing the
 838     // URL.
 839     if (entry ||
 840         (controller_.GetVisibleEntry() &&
 841          !controller_.GetVisibleEntry()->GetTitle().empty())) {
 842       entry = controller_.GetVisibleEntry();
 843     }
 844   }
 845
 846   if (entry) {
 847     return entry->GetTitleForDisplay(accept_languages);
 848   }
 849
 850   // |page_title_when_no_navigation_entry_| is finally used
 851   // if no title cannot be retrieved.
 852   return page_title_when_no_navigation_entry_;
 853 }
 854
 855 int32 WebContentsImpl::GetMaxPageID() {
 856   return GetMaxPageIDForSiteInstance(GetSiteInstance());
 857 }
 858
 859 int32 WebContentsImpl::GetMaxPageIDForSiteInstance(
 860     SiteInstance* site_instance) {
 861   if (max_page_ids_.find(site_instance->GetId()) == max_page_ids_.end())
 862     max_page_ids_[site_instance->GetId()] = -1;
 863
 864   return max_page_ids_[site_instance->GetId()];
 865 }
 866
 867 void WebContentsImpl::UpdateMaxPageID(int32 page_id) {
 868   UpdateMaxPageIDForSiteInstance(GetSiteInstance(), page_id);
 869 }
 870
 871 void WebContentsImpl::UpdateMaxPageIDForSiteInstance(
 872     SiteInstance* site_instance, int32 page_id) {
 873   if (GetMaxPageIDForSiteInstance(site_instance) < page_id)
 874     max_page_ids_[site_instance->GetId()] = page_id;
 875 }
 876
 877 void WebContentsImpl::CopyMaxPageIDsFrom(WebContents* web_contents) {
 878   WebContentsImpl* contents = static_cast<WebContentsImpl*>(web_contents);
 879   max_page_ids_ = contents->max_page_ids_;
 880 }
 881
 882 SiteInstanceImpl* WebContentsImpl::GetSiteInstance() const {
 883   return GetRenderManager()->current_host()->GetSiteInstance();
 884 }
 885
 886 SiteInstanceImpl* WebContentsImpl::GetPendingSiteInstance() const {
 887   RenderViewHostImpl* dest_rvh =
 888       GetRenderManager()->pending_render_view_host() ?
 889           GetRenderManager()->pending_render_view_host() :
 890           GetRenderManager()->current_host();
 891   return dest_rvh->GetSiteInstance();
 892 }
 893
 894 bool WebContentsImpl::IsLoading() const {
 895   return is_loading_;
 896 }
 897
 898 bool WebContentsImpl::IsLoadingToDifferentDocument() const {
 899   return is_loading_ && is_load_to_different_document_;
 900 }
 901
 902 bool WebContentsImpl::IsWaitingForResponse() const {
 903   return waiting_for_response_ && is_load_to_different_document_;
 904 }
 905
 906 const net::LoadStateWithParam& WebContentsImpl::GetLoadState() const {
 907   return load_state_;
 908 }
 909
 910 const base::string16& WebContentsImpl::GetLoadStateHost() const {
 911   return load_state_host_;
 912 }
 913
 914 uint64 WebContentsImpl::GetUploadSize() const {
 915   return upload_size_;
 916 }
 917
 918 uint64 WebContentsImpl::GetUploadPosition() const {
 919   return upload_position_;
 920 }
 921
 922 std::set<GURL> WebContentsImpl::GetSitesInTab() const {
 923   std::set<GURL> sites;
 924   frame_tree_.ForEach(base::Bind(&CollectSites,
 925                                  base::Unretained(GetBrowserContext()),
 926                                  base::Unretained(&sites)));
 927   return sites;
 928 }
 929
 930 const std::string& WebContentsImpl::GetEncoding() const {
 931   return canonical_encoding_;
 932 }
 933
 934 bool WebContentsImpl::DisplayedInsecureContent() const {
 935   return displayed_insecure_content_;
 936 }
 937
 938 void WebContentsImpl::IncrementCapturerCount(const gfx::Size& capture_size) {
 939   DCHECK(!is_being_destroyed_);
 940   ++capturer_count_;
 941   DVLOG(1) << "There are now " << capturer_count_
 942            << " capturing(s) of WebContentsImpl@" << this;
 943
 944   // Note: This provides a hint to upstream code to size the views optimally
 945   // for quality (e.g., to avoid scaling).
 946   if (!capture_size.IsEmpty() && preferred_size_for_capture_.IsEmpty()) {
 947     preferred_size_for_capture_ = capture_size;
 948     OnPreferredSizeChanged(preferred_size_);
 949   }
 950
 951   // Ensure that all views are un-occluded before capture begins.
 952   WasUnOccluded();
 953 }
 954
 955 void WebContentsImpl::DecrementCapturerCount() {
 956   --capturer_count_;
 957   DVLOG(1) << "There are now " << capturer_count_
 958            << " capturing(s) of WebContentsImpl@" << this;
 959   DCHECK_LE(0, capturer_count_);
 960
 961   if (is_being_destroyed_)
 962     return;
 963
 964   if (capturer_count_ == 0) {
 965     const gfx::Size old_size = preferred_size_for_capture_;
 966     preferred_size_for_capture_ = gfx::Size();
 967     OnPreferredSizeChanged(old_size);
 968   }
 969
 970   if (IsHidden()) {
 971     DVLOG(1) << "Executing delayed WasHidden().";
 972     WasHidden();
 973   }
 974 }
 975
 976 int WebContentsImpl::GetCapturerCount() const {
 977   return capturer_count_;
 978 }
 979
 980 bool WebContentsImpl::IsAudioMuted() const {
 981   return audio_muter_.get() && audio_muter_->is_muting();
 982 }
 983
 984 void WebContentsImpl::SetAudioMuted(bool mute) {
 985   DVLOG(1) << "SetAudioMuted(mute=" << mute << "), was " << IsAudioMuted()
 986            << " for WebContentsImpl@" << this;
 987
 988   if (mute == IsAudioMuted())
 989     return;
 990
 991   if (mute) {
 992     if (!audio_muter_)
 993       audio_muter_.reset(new WebContentsAudioMuter(this));
 994     audio_muter_->StartMuting();
 995   } else {
 996     DCHECK(audio_muter_);
 997     audio_muter_->StopMuting();
 998   }
 999
1000   // Notification for UI updates in response to the changed muting state.
1001   NotifyNavigationStateChanged(INVALIDATE_TYPE_TAB);
1002 }
1003
1004 bool WebContentsImpl::IsCrashed() const {
1005   return (crashed_status_ == base::TERMINATION_STATUS_PROCESS_CRASHED ||
1006           crashed_status_ == base::TERMINATION_STATUS_ABNORMAL_TERMINATION ||
1007           crashed_status_ == base::TERMINATION_STATUS_PROCESS_WAS_KILLED);
1008 }
1009
1010 void WebContentsImpl::SetIsCrashed(base::TerminationStatus status,
1011                                    int error_code) {
1012   if (status == crashed_status_)
1013     return;
1014
1015   crashed_status_ = status;
1016   crashed_error_code_ = error_code;
1017   NotifyNavigationStateChanged(INVALIDATE_TYPE_TAB);
1018 }
1019
1020 base::TerminationStatus WebContentsImpl::GetCrashedStatus() const {
1021   return crashed_status_;
1022 }
1023
1024 bool WebContentsImpl::IsBeingDestroyed() const {
1025   return is_being_destroyed_;
1026 }
1027
1028 void WebContentsImpl::NotifyNavigationStateChanged(
1029     InvalidateTypes changed_flags) {
1030   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
1031   // is fixed.
1032   tracked_objects::ScopedTracker tracking_profile(
1033       FROM_HERE_WITH_EXPLICIT_FUNCTION(
1034           "466285 WebContentsImpl::NotifyNavigationStateChanged"));
1035   // Create and release the audio power save blocker depending on whether the
1036   // tab is actively producing audio or not.
1037   if ((changed_flags & INVALIDATE_TYPE_TAB) &&
1038       audio_state_provider_->IsAudioStateAvailable()) {
1039     if (WasRecentlyAudible()) {
1040       if (!audio_power_save_blocker_)
1041         CreateAudioPowerSaveBlocker();
1042     } else {
1043       audio_power_save_blocker_.reset();
1044     }
1045   }
1046
1047   if (delegate_)
1048     delegate_->NavigationStateChanged(this, changed_flags);
1049 }
1050
1051 base::TimeTicks WebContentsImpl::GetLastActiveTime() const {
1052   return last_active_time_;
1053 }
1054
1055 void WebContentsImpl::WasShown() {
1056   controller_.SetActive(true);
1057
1058   for (RenderWidgetHostView* view : GetRenderWidgetHostViewsInTree()) {
1059     if (view) {
1060       view->Show();
1061 #if defined(OS_MACOSX)
1062       view->SetActive(true);
1063 #endif
1064     }
1065   }
1066
1067   last_active_time_ = base::TimeTicks::Now();
1068
1069   // The resize rect might have changed while this was inactive -- send the new
1070   // one to make sure it's up to date.
1071   RenderViewHostImpl* rvh = GetRenderViewHost();
1072   if (rvh)
1073     rvh->ResizeRectChanged(GetRootWindowResizerRect());
1074
1075   // Restore power save blocker if there are active video players running.
1076   if (!active_video_players_.empty() && !video_power_save_blocker_)
1077     CreateVideoPowerSaveBlocker();
1078
1079   FOR_EACH_OBSERVER(WebContentsObserver, observers_, WasShown());
1080
1081   should_normally_be_visible_ = true;
1082 }
1083
1084 void WebContentsImpl::WasHidden() {
1085   // If there are entities capturing screenshots or video (e.g., mirroring),
1086   // don't activate the "disable rendering" optimization.
1087   if (capturer_count_ == 0) {
1088     // |GetRenderViewHost()| can be NULL if the user middle clicks a link to
1089     // open a tab in the background, then closes the tab before selecting it.
1090     // This is because closing the tab calls WebContentsImpl::Destroy(), which
1091     // removes the |GetRenderViewHost()|; then when we actually destroy the
1092     // window, OnWindowPosChanged() notices and calls WasHidden() (which
1093     // calls us).
1094     for (RenderWidgetHostView* view : GetRenderWidgetHostViewsInTree()) {
1095       if (view)
1096         view->Hide();
1097     }
1098
1099     // Release any video power save blockers held as video is not visible.
1100     video_power_save_blocker_.reset();
1101   }
1102
1103   FOR_EACH_OBSERVER(WebContentsObserver, observers_, WasHidden());
1104
1105   should_normally_be_visible_ = false;
1106 }
1107
1108 void WebContentsImpl::WasOccluded() {
1109   if (capturer_count_ > 0)
1110     return;
1111
1112   for (RenderWidgetHostView* view : GetRenderWidgetHostViewsInTree()) {
1113     if (view)
1114       view->WasOccluded();
1115   }
1116 }
1117
1118 void WebContentsImpl::WasUnOccluded() {
1119   for (RenderWidgetHostView* view : GetRenderWidgetHostViewsInTree()) {
1120     if (view)
1121       view->WasUnOccluded();
1122   }
1123 }
1124
1125 bool WebContentsImpl::NeedToFireBeforeUnload() {
1126   // TODO(creis): Should we fire even for interstitial pages?
1127   return WillNotifyDisconnection() && !ShowingInterstitialPage() &&
1128          !GetRenderViewHost()->SuddenTerminationAllowed();
1129 }
1130
1131 void WebContentsImpl::DispatchBeforeUnload(bool for_cross_site_transition) {
1132   GetMainFrame()->DispatchBeforeUnload(for_cross_site_transition);
1133 }
1134
1135 void WebContentsImpl::Stop() {
1136   GetRenderManager()->Stop();
1137   FOR_EACH_OBSERVER(WebContentsObserver, observers_, NavigationStopped());
1138 }
1139
1140 WebContents* WebContentsImpl::Clone() {
1141   // We use our current SiteInstance since the cloned entry will use it anyway.
1142   // We pass our own opener so that the cloned page can access it if it was
1143   // before.
1144   CreateParams create_params(GetBrowserContext(), GetSiteInstance());
1145   create_params.initial_size = GetContainerBounds().size();
1146   WebContentsImpl* tc = CreateWithOpener(create_params, opener_);
1147   tc->GetController().CopyStateFrom(controller_);
1148   FOR_EACH_OBSERVER(WebContentsObserver,
1149                     observers_,
1150                     DidCloneToNewWebContents(this, tc));
1151   return tc;
1152 }
1153
1154 void WebContentsImpl::Observe(int type,
1155                               const NotificationSource& source,
1156                               const NotificationDetails& details) {
1157   switch (type) {
1158     case NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED: {
1159       RenderWidgetHost* host = Source<RenderWidgetHost>(source).ptr();
1160       RenderWidgetHostView* view = host->GetView();
1161       if (view == GetFullscreenRenderWidgetHostView()) {
1162         // We cannot just call view_->RestoreFocus() here.  On some platforms,
1163         // attempting to focus the currently-invisible WebContentsView will be
1164         // flat-out ignored.  Therefore, this boolean is used to track whether
1165         // we will request focus after the fullscreen widget has been
1166         // destroyed.
1167         fullscreen_widget_had_focus_at_shutdown_ = (view && view->HasFocus());
1168       } else {
1169         for (PendingWidgetViews::iterator i = pending_widget_views_.begin();
1170              i != pending_widget_views_.end(); ++i) {
1171           if (host->GetView() == i->second) {
1172             pending_widget_views_.erase(i);
1173             break;
1174           }
1175         }
1176       }
1177       break;
1178     }
1179     default:
1180       NOTREACHED();
1181   }
1182 }
1183
1184 WebContents* WebContentsImpl::GetWebContents() {
1185   return this;
1186 }
1187
1188 void WebContentsImpl::Init(const WebContents::CreateParams& params) {
1189   // This is set before initializing the render manager since
1190   // RenderFrameHostManager::Init calls back into us via its delegate to ask if
1191   // it should be hidden.
1192   should_normally_be_visible_ = !params.initially_hidden;
1193
1194   // Either both routing ids can be given, or neither can be.
1195   DCHECK((params.routing_id == MSG_ROUTING_NONE &&
1196               params.main_frame_routing_id == MSG_ROUTING_NONE) ||
1197          (params.routing_id != MSG_ROUTING_NONE &&
1198               params.main_frame_routing_id != MSG_ROUTING_NONE));
1199   GetRenderManager()->Init(
1200       params.browser_context, params.site_instance, params.routing_id,
1201       params.main_frame_routing_id);
1202
1203   WebContentsViewDelegate* delegate =
1204       GetContentClient()->browser()->GetWebContentsViewDelegate(this);
1205
1206   if (browser_plugin_guest_) {
1207     scoped_ptr<WebContentsView> platform_view(CreateWebContentsView(
1208         this, delegate, &render_view_host_delegate_view_));
1209
1210     WebContentsViewGuest* rv = new WebContentsViewGuest(
1211         this, browser_plugin_guest_.get(), platform_view.Pass(),
1212         render_view_host_delegate_view_);
1213     render_view_host_delegate_view_ = rv;
1214     view_.reset(rv);
1215   } else {
1216     // Regular WebContentsView.
1217     view_.reset(CreateWebContentsView(
1218         this, delegate, &render_view_host_delegate_view_));
1219   }
1220   CHECK(render_view_host_delegate_view_);
1221   CHECK(view_.get());
1222
1223   gfx::Size initial_size = params.initial_size;
1224   view_->CreateView(initial_size, params.context);
1225
1226   // Listen for whether our opener gets destroyed.
1227   if (opener_)
1228     AddDestructionObserver(opener_);
1229
1230 #if defined(ENABLE_PLUGINS)
1231   plugin_content_origin_whitelist_.reset(
1232       new PluginContentOriginWhitelist(this));
1233 #endif
1234
1235   registrar_.Add(this,
1236                  NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
1237                  NotificationService::AllBrowserContextsAndSources());
1238
1239   screen_orientation_dispatcher_host_.reset(
1240       new ScreenOrientationDispatcherHostImpl(this));
1241
1242   manifest_manager_host_.reset(new ManifestManagerHost(this));
1243
1244 #if defined(OS_ANDROID)
1245   date_time_chooser_.reset(new DateTimeChooserAndroid());
1246 #endif
1247
1248   // BrowserPluginGuest::Init needs to be called after this WebContents has
1249   // a RenderWidgetHostViewGuest. That is, |view_->CreateView| above.
1250   if (browser_plugin_guest_)
1251     browser_plugin_guest_->Init();
1252
1253   for (size_t i = 0; i < g_created_callbacks.Get().size(); i++)
1254     g_created_callbacks.Get().at(i).Run(this);
1255
1256   // If the WebContents creation was renderer-initiated, it means that the
1257   // corresponding RenderView and main RenderFrame have already been created.
1258   // Ensure observers are notified about this.
1259   if (params.renderer_initiated_creation) {
1260     RenderViewCreated(GetRenderViewHost());
1261     GetRenderManager()->current_frame_host()->SetRenderFrameCreated(true);
1262   }
1263
1264   // Ensure that observers are notified of the creation of this WebContents's
1265   // main RenderFrameHost. It must be done here for main frames, since the
1266   // NotifySwappedFromRenderManager expects view_ to already be created and that
1267   // happens after RenderFrameHostManager::Init.
1268   NotifySwappedFromRenderManager(
1269       nullptr, GetRenderManager()->current_frame_host(), true);
1270 }
1271
1272 void WebContentsImpl::OnWebContentsDestroyed(WebContentsImpl* web_contents) {
1273   RemoveDestructionObserver(web_contents);
1274
1275   // Clear the opener if it has been closed.
1276   if (web_contents == opener_) {
1277     opener_ = NULL;
1278     return;
1279   }
1280   // Clear a pending contents that has been closed before being shown.
1281   for (PendingContents::iterator iter = pending_contents_.begin();
1282        iter != pending_contents_.end();
1283        ++iter) {
1284     if (iter->second != web_contents)
1285       continue;
1286     pending_contents_.erase(iter);
1287     return;
1288   }
1289   NOTREACHED();
1290 }
1291
1292 void WebContentsImpl::AddDestructionObserver(WebContentsImpl* web_contents) {
1293   if (!ContainsKey(destruction_observers_, web_contents)) {
1294     destruction_observers_[web_contents] =
1295         new DestructionObserver(this, web_contents);
1296   }
1297 }
1298
1299 void WebContentsImpl::RemoveDestructionObserver(WebContentsImpl* web_contents) {
1300   DestructionObservers::iterator iter =
1301       destruction_observers_.find(web_contents);
1302   if (iter != destruction_observers_.end()) {
1303     delete destruction_observers_[web_contents];
1304     destruction_observers_.erase(iter);
1305   }
1306 }
1307
1308 void WebContentsImpl::AddObserver(WebContentsObserver* observer) {
1309   observers_.AddObserver(observer);
1310 }
1311
1312 void WebContentsImpl::RemoveObserver(WebContentsObserver* observer) {
1313   observers_.RemoveObserver(observer);
1314 }
1315
1316 std::set<RenderWidgetHostView*>
1317 WebContentsImpl::GetRenderWidgetHostViewsInTree() {
1318   std::set<RenderWidgetHostView*> set;
1319   if (ShowingInterstitialPage()) {
1320     set.insert(GetRenderWidgetHostView());
1321   } else {
1322     ForEachFrame(
1323         base::Bind(&AddRenderWidgetHostViewToSet, base::Unretained(&set)));
1324   }
1325   return set;
1326 }
1327
1328 void WebContentsImpl::Activate() {
1329   if (delegate_)
1330     delegate_->ActivateContents(this);
1331 }
1332
1333 void WebContentsImpl::Deactivate() {
1334   if (delegate_)
1335     delegate_->DeactivateContents(this);
1336 }
1337
1338 void WebContentsImpl::LostCapture() {
1339   if (delegate_)
1340     delegate_->LostCapture();
1341 }
1342
1343 void WebContentsImpl::RenderWidgetDeleted(
1344     RenderWidgetHostImpl* render_widget_host) {
1345   if (is_being_destroyed_) {
1346     // |created_widgets_| might have been destroyed.
1347     return;
1348   }
1349
1350   std::set<RenderWidgetHostImpl*>::iterator iter =
1351       created_widgets_.find(render_widget_host);
1352   if (iter != created_widgets_.end())
1353     created_widgets_.erase(iter);
1354
1355   if (render_widget_host &&
1356       render_widget_host->GetRoutingID() == fullscreen_widget_routing_id_) {
1357     if (delegate_ && delegate_->EmbedsFullscreenWidget())
1358       delegate_->ExitFullscreenModeForTab(this);
1359     FOR_EACH_OBSERVER(WebContentsObserver,
1360                       observers_,
1361                       DidDestroyFullscreenWidget(
1362                           fullscreen_widget_routing_id_));
1363     fullscreen_widget_routing_id_ = MSG_ROUTING_NONE;
1364     if (fullscreen_widget_had_focus_at_shutdown_)
1365       view_->RestoreFocus();
1366   }
1367 }
1368
1369 void WebContentsImpl::RenderWidgetGotFocus(
1370     RenderWidgetHostImpl* render_widget_host) {
1371   // Notify the observers if an embedded fullscreen widget was focused.
1372   if (delegate_ && render_widget_host && delegate_->EmbedsFullscreenWidget() &&
1373       render_widget_host->GetView() == GetFullscreenRenderWidgetHostView()) {
1374     NotifyWebContentsFocused();
1375   }
1376 }
1377
1378 void WebContentsImpl::RenderWidgetWasResized(
1379     RenderWidgetHostImpl* render_widget_host,
1380     bool width_changed) {
1381   RenderFrameHostImpl* rfh = GetMainFrame();
1382   if (!rfh || render_widget_host != rfh->GetRenderWidgetHost())
1383     return;
1384
1385   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1386                     MainFrameWasResized(width_changed));
1387 }
1388
1389 void WebContentsImpl::ScreenInfoChanged() {
1390   if (browser_plugin_embedder_)
1391     browser_plugin_embedder_->ScreenInfoChanged();
1392 }
1393
1394 bool WebContentsImpl::PreHandleKeyboardEvent(
1395     const NativeWebKeyboardEvent& event,
1396     bool* is_keyboard_shortcut) {
1397   return delegate_ &&
1398       delegate_->PreHandleKeyboardEvent(this, event, is_keyboard_shortcut);
1399 }
1400
1401 void WebContentsImpl::HandleKeyboardEvent(const NativeWebKeyboardEvent& event) {
1402   if (browser_plugin_embedder_ &&
1403       browser_plugin_embedder_->HandleKeyboardEvent(event)) {
1404     return;
1405   }
1406   if (delegate_)
1407     delegate_->HandleKeyboardEvent(this, event);
1408 }
1409
1410 bool WebContentsImpl::HandleWheelEvent(
1411     const blink::WebMouseWheelEvent& event) {
1412 #if !defined(OS_MACOSX)
1413   // On platforms other than Mac, control+mousewheel may change zoom. On Mac,
1414   // this isn't done for two reasons:
1415   //   -the OS already has a gesture to do this through pinch-zoom
1416   //   -if a user starts an inertial scroll, let's go, and presses control
1417   //      (i.e. control+tab) then the OS's buffered scroll events will come in
1418   //      with control key set which isn't what the user wants
1419   if (delegate_ && event.wheelTicksY &&
1420       (event.modifiers & blink::WebInputEvent::ControlKey) &&
1421       !event.canScroll) {
1422     delegate_->ContentsZoomChange(event.wheelTicksY > 0);
1423     return true;
1424   }
1425 #endif
1426   return false;
1427 }
1428
1429 bool WebContentsImpl::PreHandleGestureEvent(
1430     const blink::WebGestureEvent& event) {
1431   return delegate_ && delegate_->PreHandleGestureEvent(this, event);
1432 }
1433
1434 void WebContentsImpl::EnterFullscreenMode(const GURL& origin) {
1435   // This method is being called to enter renderer-initiated fullscreen mode.
1436   // Make sure any existing fullscreen widget is shut down first.
1437   RenderWidgetHostView* const widget_view = GetFullscreenRenderWidgetHostView();
1438   if (widget_view)
1439     RenderWidgetHostImpl::From(widget_view->GetRenderWidgetHost())->Shutdown();
1440
1441   if (delegate_)
1442     delegate_->EnterFullscreenModeForTab(this, origin);
1443
1444   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1445                     DidToggleFullscreenModeForTab(IsFullscreenForCurrentTab()));
1446 }
1447
1448 void WebContentsImpl::ExitFullscreenMode() {
1449   // This method is being called to leave renderer-initiated fullscreen mode.
1450   // Make sure any existing fullscreen widget is shut down first.
1451   RenderWidgetHostView* const widget_view = GetFullscreenRenderWidgetHostView();
1452   if (widget_view)
1453     RenderWidgetHostImpl::From(widget_view->GetRenderWidgetHost())->Shutdown();
1454
1455 #if defined(OS_ANDROID)
1456   ContentVideoView* video_view = ContentVideoView::GetInstance();
1457   if (video_view != NULL)
1458     video_view->OnExitFullscreen();
1459 #endif
1460
1461   if (delegate_)
1462     delegate_->ExitFullscreenModeForTab(this);
1463
1464   // Ensure web contents exit fullscreen state by sending a resize message,
1465   // which includes the fullscreen state. This is required for the situation
1466   // of the browser moving the view into a fullscreen state "browser fullscreen"
1467   // and then the contents entering "tab fullscreen". Exiting the contents
1468   // "tab fullscreen" then won't have the side effect of the view resizing,
1469   // hence the explicit call here is required.
1470   if (RenderWidgetHostView* rwh_view = GetRenderWidgetHostView()) {
1471     if (RenderWidgetHost* render_widget_host = rwh_view->GetRenderWidgetHost())
1472       render_widget_host->WasResized();
1473   }
1474
1475   FOR_EACH_OBSERVER(WebContentsObserver,
1476                     observers_,
1477                     DidToggleFullscreenModeForTab(IsFullscreenForCurrentTab()));
1478 }
1479
1480 bool WebContentsImpl::IsFullscreenForCurrentTab() const {
1481   return delegate_ ? delegate_->IsFullscreenForTabOrPending(this) : false;
1482 }
1483
1484 blink::WebDisplayMode WebContentsImpl::GetDisplayMode() const {
1485   return delegate_ ? delegate_->GetDisplayMode(this)
1486                    : blink::WebDisplayModeBrowser;
1487 }
1488
1489 void WebContentsImpl::RequestToLockMouse(bool user_gesture,
1490                                          bool last_unlocked_by_target) {
1491   if (delegate_) {
1492     delegate_->RequestToLockMouse(this, user_gesture, last_unlocked_by_target);
1493   } else {
1494     GotResponseToLockMouseRequest(false);
1495   }
1496 }
1497
1498 void WebContentsImpl::LostMouseLock() {
1499   if (delegate_)
1500     delegate_->LostMouseLock();
1501 }
1502
1503 void WebContentsImpl::CreateNewWindow(
1504     int render_process_id,
1505     int route_id,
1506     int main_frame_route_id,
1507     const ViewHostMsg_CreateWindow_Params& params,
1508     SessionStorageNamespace* session_storage_namespace) {
1509   // We usually create the new window in the same BrowsingInstance (group of
1510   // script-related windows), by passing in the current SiteInstance.  However,
1511   // if the opener is being suppressed (in a non-guest), we create a new
1512   // SiteInstance in its own BrowsingInstance.
1513   bool is_guest = BrowserPluginGuest::IsGuest(this);
1514
1515   // If the opener is to be suppressed, the new window can be in any process.
1516   // Since routing ids are process specific, we must not have one passed in
1517   // as argument here.
1518   DCHECK(!params.opener_suppressed || route_id == MSG_ROUTING_NONE);
1519
1520   scoped_refptr<SiteInstance> site_instance =
1521       params.opener_suppressed && !is_guest ?
1522       SiteInstance::CreateForURL(GetBrowserContext(), params.target_url) :
1523       GetSiteInstance();
1524
1525   // A message to create a new window can only come from the active process for
1526   // this WebContentsImpl instance. If any other process sends the request,
1527   // it is invalid and the process must be terminated.
1528   if (GetRenderProcessHost()->GetID() != render_process_id) {
1529     RenderProcessHost* rph = RenderProcessHost::FromID(render_process_id);
1530     base::ProcessHandle process_handle = rph->GetHandle();
1531     if (process_handle != base::kNullProcessHandle) {
1532       RecordAction(
1533           base::UserMetricsAction("Terminate_ProcessMismatch_CreateNewWindow"));
1534       rph->Shutdown(RESULT_CODE_KILLED, false);
1535     }
1536     return;
1537   }
1538
1539   // We must assign the SessionStorageNamespace before calling Init().
1540   //
1541   // http://crbug.com/142685
1542   const std::string& partition_id =
1543       GetContentClient()->browser()->
1544           GetStoragePartitionIdForSite(GetBrowserContext(),
1545                                        site_instance->GetSiteURL());
1546   StoragePartition* partition = BrowserContext::GetStoragePartition(
1547       GetBrowserContext(), site_instance.get());
1548   DOMStorageContextWrapper* dom_storage_context =
1549       static_cast<DOMStorageContextWrapper*>(partition->GetDOMStorageContext());
1550   SessionStorageNamespaceImpl* session_storage_namespace_impl =
1551       static_cast<SessionStorageNamespaceImpl*>(session_storage_namespace);
1552   CHECK(session_storage_namespace_impl->IsFromContext(dom_storage_context));
1553
1554   if (delegate_ &&
1555       !delegate_->ShouldCreateWebContents(this,
1556                                           route_id,
1557                                           main_frame_route_id,
1558                                           params.window_container_type,
1559                                           params.frame_name,
1560                                           params.target_url,
1561                                           partition_id,
1562                                           session_storage_namespace)) {
1563     if (route_id != MSG_ROUTING_NONE &&
1564         !RenderViewHost::FromID(render_process_id, route_id)) {
1565       // If the embedder didn't create a WebContents for this route, we need to
1566       // delete the RenderView that had already been created.
1567       Send(new ViewMsg_Close(route_id));
1568     }
1569     GetRenderViewHost()->GetProcess()->ResumeRequestsForView(route_id);
1570     GetRenderViewHost()->GetProcess()->ResumeRequestsForView(
1571         main_frame_route_id);
1572     return;
1573   }
1574
1575   // Create the new web contents. This will automatically create the new
1576   // WebContentsView. In the future, we may want to create the view separately.
1577   CreateParams create_params(GetBrowserContext(), site_instance.get());
1578   create_params.routing_id = route_id;
1579   create_params.main_frame_routing_id = main_frame_route_id;
1580   create_params.opener = this;
1581   create_params.opener_suppressed = params.opener_suppressed;
1582   if (params.disposition == NEW_BACKGROUND_TAB)
1583     create_params.initially_hidden = true;
1584   create_params.renderer_initiated_creation = true;
1585
1586   WebContentsImpl* new_contents = NULL;
1587   if (!is_guest) {
1588     create_params.context = view_->GetNativeView();
1589     create_params.initial_size = GetContainerBounds().size();
1590     new_contents = static_cast<WebContentsImpl*>(
1591         WebContents::Create(create_params));
1592   }  else {
1593     new_contents = GetBrowserPluginGuest()->CreateNewGuestWindow(create_params);
1594   }
1595   new_contents->GetController().SetSessionStorageNamespace(
1596       partition_id,
1597       session_storage_namespace);
1598
1599   // Save the window for later if we're not suppressing the opener (since it
1600   // will be shown immediately).
1601   if (!params.opener_suppressed) {
1602     if (!is_guest) {
1603       WebContentsView* new_view = new_contents->view_.get();
1604
1605       // TODO(brettw): It seems bogus that we have to call this function on the
1606       // newly created object and give it one of its own member variables.
1607       new_view->CreateViewForWidget(new_contents->GetRenderViewHost(), false);
1608     }
1609     // Save the created window associated with the route so we can show it
1610     // later.
1611     DCHECK_NE(MSG_ROUTING_NONE, route_id);
1612     pending_contents_[route_id] = new_contents;
1613     AddDestructionObserver(new_contents);
1614   }
1615
1616   if (delegate_) {
1617     delegate_->WebContentsCreated(
1618         this, params.opener_render_frame_id, params.frame_name,
1619         params.target_url, new_contents);
1620   }
1621
1622   if (params.opener_suppressed) {
1623     // When the opener is suppressed, the original renderer cannot access the
1624     // new window.  As a result, we need to show and navigate the window here.
1625     bool was_blocked = false;
1626     if (delegate_) {
1627       gfx::Rect initial_rect;
1628       delegate_->AddNewContents(
1629           this, new_contents, params.disposition, initial_rect,
1630           params.user_gesture, &was_blocked);
1631     }
1632     if (!was_blocked) {
1633       OpenURLParams open_params(params.target_url,
1634                                 Referrer(),
1635                                 CURRENT_TAB,
1636                                 ui::PAGE_TRANSITION_LINK,
1637                                 true /* is_renderer_initiated */);
1638       open_params.user_gesture = params.user_gesture;
1639       new_contents->OpenURL(open_params);
1640     }
1641   }
1642 }
1643
1644 void WebContentsImpl::CreateNewWidget(int render_process_id,
1645                                       int route_id,
1646                                       blink::WebPopupType popup_type) {
1647   CreateNewWidget(render_process_id, route_id, false, popup_type);
1648 }
1649
1650 void WebContentsImpl::CreateNewFullscreenWidget(int render_process_id,
1651                                                 int route_id) {
1652   CreateNewWidget(render_process_id, route_id, true, blink::WebPopupTypeNone);
1653 }
1654
1655 void WebContentsImpl::CreateNewWidget(int render_process_id,
1656                                       int route_id,
1657                                       bool is_fullscreen,
1658                                       blink::WebPopupType popup_type) {
1659   RenderProcessHost* process = GetRenderProcessHost();
1660   // A message to create a new widget can only come from the active process for
1661   // this WebContentsImpl instance. If any other process sends the request,
1662   // it is invalid and the process must be terminated.
1663   if (process->GetID() != render_process_id) {
1664     RenderProcessHost* rph = RenderProcessHost::FromID(render_process_id);
1665     base::ProcessHandle process_handle = rph->GetHandle();
1666     if (process_handle != base::kNullProcessHandle) {
1667       RecordAction(
1668           base::UserMetricsAction("Terminate_ProcessMismatch_CreateNewWidget"));
1669       rph->Shutdown(RESULT_CODE_KILLED, false);
1670     }
1671     return;
1672   }
1673
1674   RenderWidgetHostImpl* widget_host =
1675       new RenderWidgetHostImpl(this, process, route_id, IsHidden());
1676   created_widgets_.insert(widget_host);
1677
1678   RenderWidgetHostViewBase* widget_view =
1679       static_cast<RenderWidgetHostViewBase*>(
1680           view_->CreateViewForPopupWidget(widget_host));
1681   if (!widget_view)
1682     return;
1683   if (!is_fullscreen) {
1684     // Popups should not get activated.
1685     widget_view->SetPopupType(popup_type);
1686   }
1687   // Save the created widget associated with the route so we can show it later.
1688   pending_widget_views_[route_id] = widget_view;
1689
1690 #if defined(OS_MACOSX)
1691   // A RenderWidgetHostViewMac has lifetime scoped to the view. We'll retain it
1692   // to allow it to survive the trip without being hosted.
1693   base::mac::NSObjectRetain(widget_view->GetNativeView());
1694 #endif
1695 }
1696
1697 void WebContentsImpl::ShowCreatedWindow(int route_id,
1698                                         WindowOpenDisposition disposition,
1699                                         const gfx::Rect& initial_rect,
1700                                         bool user_gesture) {
1701   WebContentsImpl* contents = GetCreatedWindow(route_id);
1702   if (contents) {
1703     WebContentsDelegate* delegate = GetDelegate();
1704     if (delegate) {
1705       delegate->AddNewContents(
1706           this, contents, disposition, initial_rect, user_gesture, NULL);
1707     }
1708   }
1709 }
1710
1711 void WebContentsImpl::ShowCreatedWidget(int route_id,
1712                                         const gfx::Rect& initial_rect) {
1713   ShowCreatedWidget(route_id, false, initial_rect);
1714 }
1715
1716 void WebContentsImpl::ShowCreatedFullscreenWidget(int route_id) {
1717   ShowCreatedWidget(route_id, true, gfx::Rect());
1718 }
1719
1720 void WebContentsImpl::ShowCreatedWidget(int route_id,
1721                                         bool is_fullscreen,
1722                                         const gfx::Rect& initial_rect) {
1723   RenderWidgetHostViewBase* widget_host_view =
1724       static_cast<RenderWidgetHostViewBase*>(GetCreatedWidget(route_id));
1725   if (!widget_host_view)
1726     return;
1727
1728   RenderWidgetHostView* view = NULL;
1729   BrowserPluginGuest* guest = GetBrowserPluginGuest();
1730   if (guest && guest->embedder_web_contents()) {
1731     view = guest->embedder_web_contents()->GetRenderWidgetHostView();
1732   } else {
1733     view = GetRenderWidgetHostView();
1734   }
1735
1736   if (is_fullscreen) {
1737     DCHECK_EQ(MSG_ROUTING_NONE, fullscreen_widget_routing_id_);
1738     view_->StoreFocus();
1739     fullscreen_widget_routing_id_ = route_id;
1740     if (delegate_ && delegate_->EmbedsFullscreenWidget()) {
1741       widget_host_view->InitAsChild(GetRenderWidgetHostView()->GetNativeView());
1742       delegate_->EnterFullscreenModeForTab(this, GURL());
1743     } else {
1744       widget_host_view->InitAsFullscreen(view);
1745     }
1746     FOR_EACH_OBSERVER(WebContentsObserver,
1747                       observers_,
1748                       DidShowFullscreenWidget(route_id));
1749     if (!widget_host_view->HasFocus())
1750       widget_host_view->Focus();
1751   } else {
1752     widget_host_view->InitAsPopup(view, initial_rect);
1753   }
1754
1755   RenderWidgetHostImpl* render_widget_host_impl =
1756       RenderWidgetHostImpl::From(widget_host_view->GetRenderWidgetHost());
1757   render_widget_host_impl->Init();
1758   // Only allow privileged mouse lock for fullscreen render widget, which is
1759   // used to implement Pepper Flash fullscreen.
1760   render_widget_host_impl->set_allow_privileged_mouse_lock(is_fullscreen);
1761
1762 #if defined(OS_MACOSX)
1763   // A RenderWidgetHostViewMac has lifetime scoped to the view. Now that it's
1764   // properly embedded (or purposefully ignored) we can release the retain we
1765   // took in CreateNewWidget().
1766   base::mac::NSObjectRelease(widget_host_view->GetNativeView());
1767 #endif
1768 }
1769
1770 WebContentsImpl* WebContentsImpl::GetCreatedWindow(int route_id) {
1771   PendingContents::iterator iter = pending_contents_.find(route_id);
1772
1773   // Certain systems can block the creation of new windows. If we didn't succeed
1774   // in creating one, just return NULL.
1775   if (iter == pending_contents_.end()) {
1776     return NULL;
1777   }
1778
1779   WebContentsImpl* new_contents = iter->second;
1780   pending_contents_.erase(route_id);
1781   RemoveDestructionObserver(new_contents);
1782
1783   // Don't initialize the guest WebContents immediately.
1784   if (BrowserPluginGuest::IsGuest(new_contents))
1785     return new_contents;
1786
1787   if (!new_contents->GetRenderProcessHost()->HasConnection() ||
1788       !new_contents->GetRenderViewHost()->GetView())
1789     return NULL;
1790
1791   // Resume blocked requests for both the RenderViewHost and RenderFrameHost.
1792   // TODO(brettw): It seems bogus to reach into here and initialize the host.
1793   new_contents->GetRenderViewHost()->Init();
1794   new_contents->GetMainFrame()->Init();
1795
1796   return new_contents;
1797 }
1798
1799 RenderWidgetHostView* WebContentsImpl::GetCreatedWidget(int route_id) {
1800   PendingWidgetViews::iterator iter = pending_widget_views_.find(route_id);
1801   if (iter == pending_widget_views_.end()) {
1802     DCHECK(false);
1803     return NULL;
1804   }
1805
1806   RenderWidgetHostView* widget_host_view = iter->second;
1807   pending_widget_views_.erase(route_id);
1808
1809   RenderWidgetHost* widget_host = widget_host_view->GetRenderWidgetHost();
1810   if (!widget_host->GetProcess()->HasConnection()) {
1811     // The view has gone away or the renderer crashed. Nothing to do.
1812     return NULL;
1813   }
1814
1815   return widget_host_view;
1816 }
1817
1818 void WebContentsImpl::RequestMediaAccessPermission(
1819     const MediaStreamRequest& request,
1820     const MediaResponseCallback& callback) {
1821   if (delegate_) {
1822     delegate_->RequestMediaAccessPermission(this, request, callback);
1823   } else {
1824     callback.Run(MediaStreamDevices(),
1825                  MEDIA_DEVICE_FAILED_DUE_TO_SHUTDOWN,
1826                  scoped_ptr<MediaStreamUI>());
1827   }
1828 }
1829
1830 bool WebContentsImpl::CheckMediaAccessPermission(const GURL& security_origin,
1831                                                  MediaStreamType type) {
1832   DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE ||
1833          type == MEDIA_DEVICE_VIDEO_CAPTURE);
1834   return delegate_ &&
1835          delegate_->CheckMediaAccessPermission(this, security_origin, type);
1836 }
1837
1838 SessionStorageNamespace* WebContentsImpl::GetSessionStorageNamespace(
1839     SiteInstance* instance) {
1840   return controller_.GetSessionStorageNamespace(instance);
1841 }
1842
1843 SessionStorageNamespaceMap WebContentsImpl::GetSessionStorageNamespaceMap() {
1844   return controller_.GetSessionStorageNamespaceMap();
1845 }
1846
1847 FrameTree* WebContentsImpl::GetFrameTree() {
1848   return &frame_tree_;
1849 }
1850
1851 void WebContentsImpl::SetIsVirtualKeyboardRequested(bool requested) {
1852   virtual_keyboard_requested_ = requested;
1853 }
1854
1855 bool WebContentsImpl::IsVirtualKeyboardRequested() {
1856   return virtual_keyboard_requested_;
1857 }
1858
1859 AccessibilityMode WebContentsImpl::GetAccessibilityMode() const {
1860   return accessibility_mode_;
1861 }
1862
1863 void WebContentsImpl::AccessibilityEventReceived(
1864     const std::vector<AXEventNotificationDetails>& details) {
1865   FOR_EACH_OBSERVER(
1866       WebContentsObserver, observers_, AccessibilityEventReceived(details));
1867 }
1868
1869 RenderFrameHost* WebContentsImpl::GetGuestByInstanceID(
1870     RenderFrameHost* render_frame_host,
1871     int browser_plugin_instance_id) {
1872   BrowserPluginGuestManager* guest_manager =
1873       GetBrowserContext()->GetGuestManager();
1874   if (!guest_manager)
1875     return nullptr;
1876
1877   WebContents* guest = guest_manager->GetGuestByInstanceID(
1878       render_frame_host->GetProcess()->GetID(), browser_plugin_instance_id);
1879   if (!guest)
1880     return nullptr;
1881
1882   return guest->GetMainFrame();
1883 }
1884
1885 GeolocationServiceContext* WebContentsImpl::GetGeolocationServiceContext() {
1886   return geolocation_service_context_.get();
1887 }
1888
1889 void WebContentsImpl::OnShowValidationMessage(
1890     const gfx::Rect& anchor_in_root_view,
1891     const base::string16& main_text,
1892     const base::string16& sub_text) {
1893   if (delegate_)
1894     delegate_->ShowValidationMessage(
1895         this, anchor_in_root_view, main_text, sub_text);
1896 }
1897
1898 void WebContentsImpl::OnHideValidationMessage() {
1899   if (delegate_)
1900     delegate_->HideValidationMessage(this);
1901 }
1902
1903 void WebContentsImpl::OnMoveValidationMessage(
1904     const gfx::Rect& anchor_in_root_view) {
1905   if (delegate_)
1906     delegate_->MoveValidationMessage(this, anchor_in_root_view);
1907 }
1908
1909 void WebContentsImpl::DidSendScreenRects(RenderWidgetHostImpl* rwh) {
1910   if (browser_plugin_embedder_)
1911     browser_plugin_embedder_->DidSendScreenRects();
1912 }
1913
1914 BrowserAccessibilityManager*
1915     WebContentsImpl::GetRootBrowserAccessibilityManager() {
1916   RenderFrameHostImpl* rfh = GetMainFrame();
1917   return rfh ? rfh->browser_accessibility_manager() : nullptr;
1918 }
1919
1920 BrowserAccessibilityManager*
1921     WebContentsImpl::GetOrCreateRootBrowserAccessibilityManager() {
1922   RenderFrameHostImpl* rfh = GetMainFrame();
1923   return rfh ? rfh->GetOrCreateBrowserAccessibilityManager() : nullptr;
1924 }
1925
1926 void WebContentsImpl::UpdatePreferredSize(const gfx::Size& pref_size) {
1927   const gfx::Size old_size = GetPreferredSize();
1928   preferred_size_ = pref_size;
1929   OnPreferredSizeChanged(old_size);
1930 }
1931
1932 void WebContentsImpl::ResizeDueToAutoResize(const gfx::Size& new_size) {
1933   if (delegate_)
1934     delegate_->ResizeDueToAutoResize(this, new_size);
1935 }
1936
1937 WebContents* WebContentsImpl::OpenURL(const OpenURLParams& params) {
1938   if (!delegate_)
1939     return NULL;
1940
1941   WebContents* new_contents = delegate_->OpenURLFromTab(this, params);
1942   return new_contents;
1943 }
1944
1945 bool WebContentsImpl::Send(IPC::Message* message) {
1946   if (!GetRenderViewHost()) {
1947     delete message;
1948     return false;
1949   }
1950
1951   return GetRenderViewHost()->Send(message);
1952 }
1953
1954 bool WebContentsImpl::NavigateToPendingEntry(
1955     NavigationController::ReloadType reload_type) {
1956   FrameTreeNode* node = frame_tree_.root();
1957
1958   // Navigate in the FrameTreeNode specified in the pending entry, if any.  This
1959   // is currently only used in --site-per-process and tests.
1960   // TODO(creis): Remove this method and NavigationEntryImpl::frame_tree_node_id
1961   // by using FrameNavigationEntries instead.  See https://crbug.com/236848.
1962   NavigationEntryImpl* pending_entry = controller_.GetPendingEntry();
1963   if (pending_entry->frame_tree_node_id() != -1) {
1964     FrameTreeNode* subframe =
1965         frame_tree_.FindByID(pending_entry->frame_tree_node_id());
1966     DCHECK(subframe);
1967     if (subframe)
1968       node = subframe;
1969   }
1970
1971   return node->navigator()->NavigateToPendingEntry(node, reload_type);
1972 }
1973
1974 void WebContentsImpl::RenderFrameForInterstitialPageCreated(
1975     RenderFrameHost* render_frame_host) {
1976   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1977                     RenderFrameForInterstitialPageCreated(render_frame_host));
1978 }
1979
1980 void WebContentsImpl::AttachInterstitialPage(
1981     InterstitialPageImpl* interstitial_page) {
1982   DCHECK(interstitial_page);
1983   GetRenderManager()->set_interstitial_page(interstitial_page);
1984
1985   // Cancel any visible dialogs so that they don't interfere with the
1986   // interstitial.
1987   if (dialog_manager_)
1988     dialog_manager_->CancelActiveAndPendingDialogs(this);
1989
1990   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1991                     DidAttachInterstitialPage());
1992 }
1993
1994 void WebContentsImpl::DetachInterstitialPage() {
1995   if (ShowingInterstitialPage())
1996     GetRenderManager()->remove_interstitial_page();
1997   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1998                     DidDetachInterstitialPage());
1999 }
2000
2001 void WebContentsImpl::SetHistoryOffsetAndLength(int history_offset,
2002                                                 int history_length) {
2003   SetHistoryOffsetAndLengthForView(
2004       GetRenderViewHost(), history_offset, history_length);
2005 }
2006
2007 void WebContentsImpl::SetHistoryOffsetAndLengthForView(
2008     RenderViewHost* render_view_host,
2009     int history_offset,
2010     int history_length) {
2011   render_view_host->Send(new ViewMsg_SetHistoryOffsetAndLength(
2012       render_view_host->GetRoutingID(), history_offset, history_length));
2013 }
2014
2015 void WebContentsImpl::ReloadFocusedFrame(bool ignore_cache) {
2016   RenderFrameHost* focused_frame = GetFocusedFrame();
2017   if (!focused_frame)
2018     return;
2019
2020   focused_frame->Send(new FrameMsg_Reload(
2021       focused_frame->GetRoutingID(), ignore_cache));
2022 }
2023
2024 void WebContentsImpl::Undo() {
2025   RenderFrameHost* focused_frame = GetFocusedFrame();
2026   if (!focused_frame)
2027     return;
2028
2029   focused_frame->Send(new InputMsg_Undo(focused_frame->GetRoutingID()));
2030   RecordAction(base::UserMetricsAction("Undo"));
2031 }
2032
2033 void WebContentsImpl::Redo() {
2034   RenderFrameHost* focused_frame = GetFocusedFrame();
2035   if (!focused_frame)
2036     return;
2037   focused_frame->Send(new InputMsg_Redo(focused_frame->GetRoutingID()));
2038   RecordAction(base::UserMetricsAction("Redo"));
2039 }
2040
2041 void WebContentsImpl::Cut() {
2042   RenderFrameHost* focused_frame = GetFocusedFrame();
2043   if (!focused_frame)
2044     return;
2045
2046   focused_frame->Send(new InputMsg_Cut(focused_frame->GetRoutingID()));
2047   RecordAction(base::UserMetricsAction("Cut"));
2048 }
2049
2050 void WebContentsImpl::Copy() {
2051   RenderFrameHost* focused_frame = GetFocusedFrame();
2052   if (!focused_frame)
2053     return;
2054
2055   focused_frame->Send(new InputMsg_Copy(focused_frame->GetRoutingID()));
2056   RecordAction(base::UserMetricsAction("Copy"));
2057 }
2058
2059 void WebContentsImpl::CopyToFindPboard() {
2060 #if defined(OS_MACOSX)
2061   RenderFrameHost* focused_frame = GetFocusedFrame();
2062   if (!focused_frame)
2063     return;
2064
2065   // Windows/Linux don't have the concept of a find pasteboard.
2066   focused_frame->Send(
2067       new InputMsg_CopyToFindPboard(focused_frame->GetRoutingID()));
2068   RecordAction(base::UserMetricsAction("CopyToFindPboard"));
2069 #endif
2070 }
2071
2072 void WebContentsImpl::Paste() {
2073   RenderFrameHost* focused_frame = GetFocusedFrame();
2074   if (!focused_frame)
2075     return;
2076
2077   focused_frame->Send(new InputMsg_Paste(focused_frame->GetRoutingID()));
2078   RecordAction(base::UserMetricsAction("Paste"));
2079 }
2080
2081 void WebContentsImpl::PasteAndMatchStyle() {
2082   RenderFrameHost* focused_frame = GetFocusedFrame();
2083   if (!focused_frame)
2084     return;
2085
2086   focused_frame->Send(new InputMsg_PasteAndMatchStyle(
2087       focused_frame->GetRoutingID()));
2088   RecordAction(base::UserMetricsAction("PasteAndMatchStyle"));
2089 }
2090
2091 void WebContentsImpl::Delete() {
2092   RenderFrameHost* focused_frame = GetFocusedFrame();
2093   if (!focused_frame)
2094     return;
2095
2096   focused_frame->Send(new InputMsg_Delete(focused_frame->GetRoutingID()));
2097   RecordAction(base::UserMetricsAction("DeleteSelection"));
2098 }
2099
2100 void WebContentsImpl::SelectAll() {
2101   RenderFrameHost* focused_frame = GetFocusedFrame();
2102   if (!focused_frame)
2103     return;
2104
2105   focused_frame->Send(new InputMsg_SelectAll(focused_frame->GetRoutingID()));
2106   RecordAction(base::UserMetricsAction("SelectAll"));
2107 }
2108
2109 void WebContentsImpl::Unselect() {
2110   RenderFrameHost* focused_frame = GetFocusedFrame();
2111   if (!focused_frame)
2112     return;
2113
2114   focused_frame->Send(new InputMsg_Unselect(focused_frame->GetRoutingID()));
2115   RecordAction(base::UserMetricsAction("Unselect"));
2116 }
2117
2118 void WebContentsImpl::Replace(const base::string16& word) {
2119   RenderFrameHost* focused_frame = GetFocusedFrame();
2120   if (!focused_frame)
2121     return;
2122
2123   focused_frame->Send(new InputMsg_Replace(
2124       focused_frame->GetRoutingID(), word));
2125 }
2126
2127 void WebContentsImpl::ReplaceMisspelling(const base::string16& word) {
2128   RenderFrameHost* focused_frame = GetFocusedFrame();
2129   if (!focused_frame)
2130     return;
2131
2132   focused_frame->Send(new InputMsg_ReplaceMisspelling(
2133       focused_frame->GetRoutingID(), word));
2134 }
2135
2136 void WebContentsImpl::NotifyContextMenuClosed(
2137     const CustomContextMenuContext& context) {
2138   RenderFrameHost* focused_frame = GetFocusedFrame();
2139   if (!focused_frame)
2140     return;
2141
2142   focused_frame->Send(new FrameMsg_ContextMenuClosed(
2143       focused_frame->GetRoutingID(), context));
2144 }
2145
2146 void WebContentsImpl::ExecuteCustomContextMenuCommand(
2147     int action, const CustomContextMenuContext& context) {
2148   RenderFrameHost* focused_frame = GetFocusedFrame();
2149   if (!focused_frame)
2150     return;
2151
2152   focused_frame->Send(new FrameMsg_CustomContextMenuAction(
2153       focused_frame->GetRoutingID(), context, action));
2154 }
2155
2156 gfx::NativeView WebContentsImpl::GetNativeView() {
2157   return view_->GetNativeView();
2158 }
2159
2160 gfx::NativeView WebContentsImpl::GetContentNativeView() {
2161   return view_->GetContentNativeView();
2162 }
2163
2164 gfx::NativeWindow WebContentsImpl::GetTopLevelNativeWindow() {
2165   return view_->GetTopLevelNativeWindow();
2166 }
2167
2168 gfx::Rect WebContentsImpl::GetViewBounds() {
2169   return view_->GetViewBounds();
2170 }
2171
2172 gfx::Rect WebContentsImpl::GetContainerBounds() {
2173   gfx::Rect rv;
2174   view_->GetContainerBounds(&rv);
2175   return rv;
2176 }
2177
2178 DropData* WebContentsImpl::GetDropData() {
2179   return view_->GetDropData();
2180 }
2181
2182 void WebContentsImpl::Focus() {
2183   view_->Focus();
2184 }
2185
2186 void WebContentsImpl::SetInitialFocus() {
2187   view_->SetInitialFocus();
2188 }
2189
2190 void WebContentsImpl::StoreFocus() {
2191   view_->StoreFocus();
2192 }
2193
2194 void WebContentsImpl::RestoreFocus() {
2195   view_->RestoreFocus();
2196 }
2197
2198 void WebContentsImpl::FocusThroughTabTraversal(bool reverse) {
2199   if (ShowingInterstitialPage()) {
2200     GetRenderManager()->interstitial_page()->FocusThroughTabTraversal(reverse);
2201     return;
2202   }
2203   RenderWidgetHostView* const fullscreen_view =
2204       GetFullscreenRenderWidgetHostView();
2205   if (fullscreen_view) {
2206     fullscreen_view->Focus();
2207     return;
2208   }
2209   GetRenderViewHost()->SetInitialFocus(reverse);
2210 }
2211
2212 bool WebContentsImpl::ShowingInterstitialPage() const {
2213   return GetRenderManager()->interstitial_page() != NULL;
2214 }
2215
2216 InterstitialPage* WebContentsImpl::GetInterstitialPage() const {
2217   return GetRenderManager()->interstitial_page();
2218 }
2219
2220 bool WebContentsImpl::IsSavable() {
2221   // WebKit creates Document object when MIME type is application/xhtml+xml,
2222   // so we also support this MIME type.
2223   return contents_mime_type_ == "text/html" ||
2224          contents_mime_type_ == "text/xml" ||
2225          contents_mime_type_ == "application/xhtml+xml" ||
2226          contents_mime_type_ == "text/plain" ||
2227          contents_mime_type_ == "text/css" ||
2228          net::IsSupportedJavascriptMimeType(contents_mime_type_.c_str());
2229 }
2230
2231 void WebContentsImpl::OnSavePage() {
2232   // If we can not save the page, try to download it.
2233   if (!IsSavable()) {
2234     RecordDownloadSource(INITIATED_BY_SAVE_PACKAGE_ON_NON_HTML);
2235     SaveFrame(GetLastCommittedURL(), Referrer());
2236     return;
2237   }
2238
2239   Stop();
2240
2241   // Create the save package and possibly prompt the user for the name to save
2242   // the page as. The user prompt is an asynchronous operation that runs on
2243   // another thread.
2244   save_package_ = new SavePackage(this);
2245   save_package_->GetSaveInfo();
2246 }
2247
2248 // Used in automated testing to bypass prompting the user for file names.
2249 // Instead, the names and paths are hard coded rather than running them through
2250 // file name sanitation and extension / mime checking.
2251 bool WebContentsImpl::SavePage(const base::FilePath& main_file,
2252                                const base::FilePath& dir_path,
2253                                SavePageType save_type) {
2254   // Stop the page from navigating.
2255   Stop();
2256
2257   save_package_ = new SavePackage(this, save_type, main_file, dir_path);
2258   return save_package_->Init(SavePackageDownloadCreatedCallback());
2259 }
2260
2261 void WebContentsImpl::SaveFrame(const GURL& url,
2262                                 const Referrer& referrer) {
2263   SaveFrameWithHeaders(url, referrer, std::string());
2264 }
2265
2266 void WebContentsImpl::SaveFrameWithHeaders(const GURL& url,
2267                                            const Referrer& referrer,
2268                                            const std::string& headers) {
2269   if (!GetLastCommittedURL().is_valid())
2270     return;
2271   if (delegate_ && delegate_->SaveFrame(url, referrer))
2272     return;
2273
2274   // TODO(nasko): This check for main frame is incorrect and should be fixed
2275   // by explicitly passing in which frame this method should target.
2276   bool is_main_frame = (url == GetLastCommittedURL());
2277
2278   DownloadManager* dlm =
2279       BrowserContext::GetDownloadManager(GetBrowserContext());
2280   if (!dlm)
2281     return;
2282   int64 post_id = -1;
2283   if (is_main_frame) {
2284     const NavigationEntry* entry = controller_.GetLastCommittedEntry();
2285     if (entry)
2286       post_id = entry->GetPostID();
2287   }
2288   scoped_ptr<DownloadUrlParameters> params(
2289       DownloadUrlParameters::FromWebContents(this, url));
2290   params->set_referrer(referrer);
2291   params->set_post_id(post_id);
2292   if (post_id >= 0)
2293     params->set_method("POST");
2294   params->set_prompt(true);
2295
2296   if (headers.empty()) {
2297     params->set_prefer_cache(true);
2298   } else {
2299     std::vector<std::string> key_value_list;
2300     base::SplitString(headers, '\n', &key_value_list);
2301     for (const auto& key_value : key_value_list) {
2302       std::vector<std::string> pair;
2303       base::SplitString(key_value, ':', &pair);
2304       DCHECK_EQ(2ul, pair.size());
2305       params->add_request_header(pair[0], pair[1]);
2306     }
2307   }
2308   dlm->DownloadUrl(params.Pass());
2309 }
2310
2311 void WebContentsImpl::GenerateMHTML(
2312     const base::FilePath& file,
2313     const base::Callback<void(int64)>& callback) {
2314   MHTMLGenerationManager::GetInstance()->SaveMHTML(this, file, callback);
2315 }
2316
2317 const std::string& WebContentsImpl::GetContentsMimeType() const {
2318   return contents_mime_type_;
2319 }
2320
2321 bool WebContentsImpl::WillNotifyDisconnection() const {
2322   return notify_disconnection_;
2323 }
2324
2325 void WebContentsImpl::SetOverrideEncoding(const std::string& encoding) {
2326   SetEncoding(encoding);
2327   Send(new ViewMsg_SetPageEncoding(GetRoutingID(), encoding));
2328 }
2329
2330 void WebContentsImpl::ResetOverrideEncoding() {
2331   canonical_encoding_.clear();
2332   Send(new ViewMsg_ResetPageEncodingToDefault(GetRoutingID()));
2333 }
2334
2335 RendererPreferences* WebContentsImpl::GetMutableRendererPrefs() {
2336   return &renderer_preferences_;
2337 }
2338
2339 void WebContentsImpl::Close() {
2340   Close(GetRenderViewHost());
2341 }
2342
2343 void WebContentsImpl::DragSourceEndedAt(int client_x, int client_y,
2344     int screen_x, int screen_y, blink::WebDragOperation operation) {
2345   if (browser_plugin_embedder_.get())
2346     browser_plugin_embedder_->DragSourceEndedAt(client_x, client_y,
2347         screen_x, screen_y, operation);
2348   if (GetRenderViewHost())
2349     GetRenderViewHost()->DragSourceEndedAt(client_x, client_y, screen_x,
2350                                            screen_y, operation);
2351 }
2352
2353 void WebContentsImpl::DidGetResourceResponseStart(
2354   const ResourceRequestDetails& details) {
2355   controller_.ssl_manager()->DidStartResourceResponse(details);
2356
2357   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2358                     DidGetResourceResponseStart(details));
2359
2360   // TODO(avi): Remove. http://crbug.com/170921
2361   NotificationService::current()->Notify(
2362       NOTIFICATION_RESOURCE_RESPONSE_STARTED,
2363       Source<WebContents>(this),
2364       Details<const ResourceRequestDetails>(&details));
2365 }
2366
2367 void WebContentsImpl::DidGetRedirectForResourceRequest(
2368   RenderFrameHost* render_frame_host,
2369   const ResourceRedirectDetails& details) {
2370   controller_.ssl_manager()->DidReceiveResourceRedirect(details);
2371
2372   FOR_EACH_OBSERVER(
2373       WebContentsObserver,
2374       observers_,
2375       DidGetRedirectForResourceRequest(render_frame_host, details));
2376
2377   // TODO(avi): Remove. http://crbug.com/170921
2378   NotificationService::current()->Notify(
2379       NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
2380       Source<WebContents>(this),
2381       Details<const ResourceRedirectDetails>(&details));
2382 }
2383
2384 void WebContentsImpl::NotifyWebContentsFocused() {
2385   FOR_EACH_OBSERVER(WebContentsObserver, observers_, OnWebContentsFocused());
2386 }
2387
2388 void WebContentsImpl::SystemDragEnded() {
2389   if (GetRenderViewHost())
2390     GetRenderViewHost()->DragSourceSystemDragEnded();
2391   if (browser_plugin_embedder_.get())
2392     browser_plugin_embedder_->SystemDragEnded();
2393 }
2394
2395 void WebContentsImpl::UserGestureDone() {
2396   OnUserGesture();
2397 }
2398
2399 void WebContentsImpl::SetClosedByUserGesture(bool value) {
2400   closed_by_user_gesture_ = value;
2401 }
2402
2403 bool WebContentsImpl::GetClosedByUserGesture() const {
2404   return closed_by_user_gesture_;
2405 }
2406
2407 void WebContentsImpl::ViewSource() {
2408   if (!delegate_)
2409     return;
2410
2411   NavigationEntry* entry = GetController().GetLastCommittedEntry();
2412   if (!entry)
2413     return;
2414
2415   delegate_->ViewSourceForTab(this, entry->GetURL());
2416 }
2417
2418 void WebContentsImpl::ViewFrameSource(const GURL& url,
2419                                       const PageState& page_state) {
2420   if (!delegate_)
2421     return;
2422
2423   delegate_->ViewSourceForFrame(this, url, page_state);
2424 }
2425
2426 int WebContentsImpl::GetMinimumZoomPercent() const {
2427   return minimum_zoom_percent_;
2428 }
2429
2430 int WebContentsImpl::GetMaximumZoomPercent() const {
2431   return maximum_zoom_percent_;
2432 }
2433
2434 void WebContentsImpl::ResetPageScale() {
2435   Send(new ViewMsg_ResetPageScale(GetRoutingID()));
2436 }
2437
2438 gfx::Size WebContentsImpl::GetPreferredSize() const {
2439   return capturer_count_ == 0 ? preferred_size_ : preferred_size_for_capture_;
2440 }
2441
2442 bool WebContentsImpl::GotResponseToLockMouseRequest(bool allowed) {
2443   if (GetBrowserPluginGuest())
2444     return GetBrowserPluginGuest()->LockMouse(allowed);
2445
2446   return GetRenderViewHost()
2447              ? GetRenderViewHost()->GotResponseToLockMouseRequest(allowed)
2448              : false;
2449 }
2450
2451 bool WebContentsImpl::HasOpener() const {
2452   return opener_ != NULL;
2453 }
2454
2455 WebContents* WebContentsImpl::GetOpener() const {
2456   return static_cast<WebContents*>(opener_);
2457 }
2458
2459 void WebContentsImpl::DidChooseColorInColorChooser(SkColor color) {
2460   if (!color_chooser_info_.get())
2461     return;
2462   RenderFrameHost* rfh = RenderFrameHost::FromID(
2463       color_chooser_info_->render_process_id,
2464       color_chooser_info_->render_frame_id);
2465   if (!rfh)
2466     return;
2467
2468   rfh->Send(new FrameMsg_DidChooseColorResponse(
2469       rfh->GetRoutingID(), color_chooser_info_->identifier, color));
2470 }
2471
2472 void WebContentsImpl::DidEndColorChooser() {
2473   if (!color_chooser_info_.get())
2474     return;
2475   RenderFrameHost* rfh = RenderFrameHost::FromID(
2476       color_chooser_info_->render_process_id,
2477       color_chooser_info_->render_frame_id);
2478   if (!rfh)
2479     return;
2480
2481   rfh->Send(new FrameMsg_DidEndColorChooser(
2482       rfh->GetRoutingID(), color_chooser_info_->identifier));
2483   color_chooser_info_.reset();
2484 }
2485
2486 int WebContentsImpl::DownloadImage(const GURL& url,
2487                                    bool is_favicon,
2488                                    uint32_t max_bitmap_size,
2489                                    bool bypass_cache,
2490                                    const ImageDownloadCallback& callback) {
2491   int id = StartDownload(GetMainFrame(), url, is_favicon, max_bitmap_size,
2492                          bypass_cache);
2493   image_download_map_[id] = callback;
2494   return id;
2495 }
2496
2497 bool WebContentsImpl::IsSubframe() const {
2498   return is_subframe_;
2499 }
2500
2501 void WebContentsImpl::Find(int request_id,
2502                            const base::string16& search_text,
2503                            const blink::WebFindOptions& options) {
2504   // See if a top level browser plugin handles the find request first.
2505   if (browser_plugin_embedder_) {
2506     BrowserPluginGuest* guest = browser_plugin_embedder_->GetFullPageGuest();
2507     if (guest && guest->Find(request_id, search_text, options))
2508       return;
2509   }
2510   Send(new ViewMsg_Find(GetRoutingID(), request_id, search_text, options));
2511 }
2512
2513 void WebContentsImpl::StopFinding(StopFindAction action) {
2514   // See if a top level browser plugin handles the stop finding request first.
2515   if (browser_plugin_embedder_) {
2516     BrowserPluginGuest* guest = browser_plugin_embedder_->GetFullPageGuest();
2517     if (guest && guest->StopFinding(action))
2518       return;
2519   }
2520   Send(new ViewMsg_StopFinding(GetRoutingID(), action));
2521 }
2522
2523 void WebContentsImpl::InsertCSS(const std::string& css) {
2524   GetMainFrame()->Send(new FrameMsg_CSSInsertRequest(
2525       GetMainFrame()->GetRoutingID(), css));
2526 }
2527
2528 bool WebContentsImpl::WasRecentlyAudible() {
2529   return audio_state_provider_->WasRecentlyAudible();
2530 }
2531
2532 void WebContentsImpl::GetManifest(const GetManifestCallback& callback) {
2533   manifest_manager_host_->GetManifest(GetMainFrame(), callback);
2534 }
2535
2536 void WebContentsImpl::ExitFullscreen() {
2537   // Clean up related state and initiate the fullscreen exit.
2538   GetRenderViewHost()->RejectMouseLockOrUnlockIfNecessary();
2539   ExitFullscreenMode();
2540 }
2541
2542 bool WebContentsImpl::FocusLocationBarByDefault() {
2543   NavigationEntry* entry = controller_.GetVisibleEntry();
2544   if (entry && entry->GetURL() == GURL(url::kAboutBlankURL))
2545     return true;
2546   return delegate_ && delegate_->ShouldFocusLocationBarByDefault(this);
2547 }
2548
2549 void WebContentsImpl::SetFocusToLocationBar(bool select_all) {
2550   if (delegate_)
2551     delegate_->SetFocusToLocationBar(select_all);
2552 }
2553
2554 void WebContentsImpl::DidStartProvisionalLoad(
2555     RenderFrameHostImpl* render_frame_host,
2556     const GURL& validated_url,
2557     bool is_error_page,
2558     bool is_iframe_srcdoc) {
2559   // Notify observers about the start of the provisional load.
2560   FOR_EACH_OBSERVER(
2561       WebContentsObserver,
2562       observers_,
2563       DidStartProvisionalLoadForFrame(
2564           render_frame_host, validated_url, is_error_page, is_iframe_srcdoc));
2565
2566   // Notify accessibility if this is a reload.
2567   NavigationEntry* entry = controller_.GetVisibleEntry();
2568   if (entry && ui::PageTransitionCoreTypeIs(
2569           entry->GetTransitionType(), ui::PAGE_TRANSITION_RELOAD)) {
2570     FrameTreeNode* ftn = render_frame_host->frame_tree_node();
2571     BrowserAccessibilityManager* manager =
2572         ftn->current_frame_host()->browser_accessibility_manager();
2573     if (manager)
2574       manager->UserIsReloading();
2575   }
2576 }
2577
2578 void WebContentsImpl::DidStartNavigationTransition(
2579     RenderFrameHostImpl* render_frame_host) {
2580 #if defined(OS_ANDROID)
2581   int render_frame_id = render_frame_host->GetRoutingID();
2582   GetWebContentsAndroid()->DidStartNavigationTransitionForFrame(
2583       render_frame_id);
2584 #endif
2585 }
2586
2587 void WebContentsImpl::DidFailProvisionalLoadWithError(
2588     RenderFrameHostImpl* render_frame_host,
2589     const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {
2590   GURL validated_url(params.url);
2591   FOR_EACH_OBSERVER(WebContentsObserver,
2592                     observers_,
2593                     DidFailProvisionalLoad(render_frame_host,
2594                                            validated_url,
2595                                            params.error_code,
2596                                            params.error_description));
2597
2598   FrameTreeNode* ftn = render_frame_host->frame_tree_node();
2599   BrowserAccessibilityManager* manager =
2600       ftn->current_frame_host()->browser_accessibility_manager();
2601   if (manager)
2602     manager->NavigationFailed();
2603 }
2604
2605 void WebContentsImpl::DidFailLoadWithError(
2606     RenderFrameHostImpl* render_frame_host,
2607     const GURL& url,
2608     int error_code,
2609     const base::string16& error_description) {
2610   FOR_EACH_OBSERVER(
2611       WebContentsObserver,
2612       observers_,
2613       DidFailLoad(render_frame_host, url, error_code, error_description));
2614 }
2615
2616 void WebContentsImpl::NotifyChangedNavigationState(
2617     InvalidateTypes changed_flags) {
2618   NotifyNavigationStateChanged(changed_flags);
2619 }
2620
2621 void WebContentsImpl::AboutToNavigateRenderFrame(
2622       RenderFrameHostImpl* old_host,
2623       RenderFrameHostImpl* new_host) {
2624   // Notify observers that we will navigate in this RenderFrame.
2625   FOR_EACH_OBSERVER(
2626       WebContentsObserver,
2627       observers_,
2628       AboutToNavigateRenderFrame(old_host, new_host));
2629 }
2630
2631 void WebContentsImpl::DidStartNavigationToPendingEntry(
2632       const GURL& url,
2633       NavigationController::ReloadType reload_type) {
2634   // Notify observers about navigation.
2635   FOR_EACH_OBSERVER(
2636       WebContentsObserver,
2637       observers_,
2638       DidStartNavigationToPendingEntry(url, reload_type));
2639 }
2640
2641 void WebContentsImpl::RequestOpenURL(RenderFrameHostImpl* render_frame_host,
2642                                      const OpenURLParams& params) {
2643   // OpenURL can blow away the source RFH. Use the process/frame routing ID as a
2644   // weak pointer of sorts.
2645   const int32_t process_id = render_frame_host->GetProcess()->GetID();
2646   const int32_t frame_id = render_frame_host->GetRoutingID();
2647
2648   WebContents* new_contents = OpenURL(params);
2649
2650   if (new_contents && RenderFrameHost::FromID(process_id, frame_id)) {
2651     // Notify observers.
2652     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2653                       DidOpenRequestedURL(new_contents,
2654                                           render_frame_host,
2655                                           params.url,
2656                                           params.referrer,
2657                                           params.disposition,
2658                                           params.transition));
2659   }
2660 }
2661
2662 bool WebContentsImpl::ShouldPreserveAbortedURLs() {
2663   if (!delegate_)
2664     return false;
2665   return delegate_->ShouldPreserveAbortedURLs(this);
2666 }
2667
2668 void WebContentsImpl::DidCommitProvisionalLoad(
2669     RenderFrameHostImpl* render_frame_host,
2670     const GURL& url,
2671     ui::PageTransition transition_type) {
2672   // Notify observers about the commit of the provisional load.
2673   FOR_EACH_OBSERVER(WebContentsObserver,
2674                     observers_,
2675                     DidCommitProvisionalLoadForFrame(
2676                         render_frame_host, url, transition_type));
2677
2678   BrowserAccessibilityManager* manager =
2679       render_frame_host->browser_accessibility_manager();
2680   if (manager)
2681     manager->NavigationSucceeded();
2682 }
2683
2684 void WebContentsImpl::DidNavigateMainFramePreCommit(
2685     bool navigation_is_within_page) {
2686   // Ensure fullscreen mode is exited before committing the navigation to a
2687   // different page.  The next page will not start out assuming it is in
2688   // fullscreen mode.
2689   if (navigation_is_within_page) {
2690     // No page change?  Then, the renderer and browser can remain in fullscreen.
2691     return;
2692   }
2693   if (IsFullscreenForCurrentTab())
2694     ExitFullscreen();
2695   DCHECK(!IsFullscreenForCurrentTab());
2696 }
2697
2698 void WebContentsImpl::DidNavigateMainFramePostCommit(
2699     RenderFrameHostImpl* render_frame_host,
2700     const LoadCommittedDetails& details,
2701     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
2702   if (details.is_navigation_to_different_page()) {
2703     // Clear the status bubble. This is a workaround for a bug where WebKit
2704     // doesn't let us know that the cursor left an element during a
2705     // transition (this is also why the mouse cursor remains as a hand after
2706     // clicking on a link); see bugs 1184641 and 980803. We don't want to
2707     // clear the bubble when a user navigates to a named anchor in the same
2708     // page.
2709     UpdateTargetURL(render_frame_host->GetRenderViewHost(), GURL());
2710
2711     RenderWidgetHostViewBase* rwhvb =
2712         static_cast<RenderWidgetHostViewBase*>(GetRenderWidgetHostView());
2713     if (rwhvb)
2714       rwhvb->OnDidNavigateMainFrameToNewPage();
2715
2716     // Reset theme color on navigation to new page.
2717     theme_color_ = SK_ColorTRANSPARENT;
2718   }
2719
2720   if (!details.is_in_page) {
2721     // Once the main frame is navigated, we're no longer considered to have
2722     // displayed insecure content.
2723     displayed_insecure_content_ = false;
2724     SSLManager::NotifySSLInternalStateChanged(
2725         GetController().GetBrowserContext());
2726   }
2727
2728   // Notify observers about navigation.
2729   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2730                     DidNavigateMainFrame(details, params));
2731
2732   if (delegate_)
2733     delegate_->DidNavigateMainFramePostCommit(this);
2734   view_->SetOverscrollControllerEnabled(CanOverscrollContent());
2735 }
2736
2737 void WebContentsImpl::DidNavigateAnyFramePostCommit(
2738     RenderFrameHostImpl* render_frame_host,
2739     const LoadCommittedDetails& details,
2740     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
2741   // Now that something has committed, we don't need to track whether the
2742   // initial page has been accessed.
2743   has_accessed_initial_document_ = false;
2744
2745   // If we navigate off the page, close all JavaScript dialogs.
2746   if (dialog_manager_ && !details.is_in_page)
2747     dialog_manager_->CancelActiveAndPendingDialogs(this);
2748
2749   // Notify observers about navigation.
2750   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2751                     DidNavigateAnyFrame(render_frame_host, details, params));
2752 }
2753
2754 void WebContentsImpl::SetMainFrameMimeType(const std::string& mime_type) {
2755   contents_mime_type_ = mime_type;
2756 }
2757
2758 bool WebContentsImpl::CanOverscrollContent() const {
2759   // Disable overscroll when touch emulation is on. See crbug.com/369938.
2760   if (force_disable_overscroll_content_)
2761     return false;
2762
2763   if (delegate_)
2764     return delegate_->CanOverscrollContent();
2765
2766   return false;
2767 }
2768
2769 void WebContentsImpl::OnThemeColorChanged(SkColor theme_color) {
2770   // Update the theme color. This is to be published to observers on visually
2771   // non empty paint.
2772   theme_color_ = theme_color;
2773 }
2774
2775 void WebContentsImpl::OnDidLoadResourceFromMemoryCache(
2776     const GURL& url,
2777     const std::string& security_info,
2778     const std::string& http_method,
2779     const std::string& mime_type,
2780     ResourceType resource_type) {
2781
2782   // Send out a notification that we loaded a resource from our memory cache.
2783   int cert_id = 0;
2784   net::CertStatus cert_status = 0;
2785   int security_bits = -1;
2786   int connection_status = 0;
2787   SignedCertificateTimestampIDStatusList signed_certificate_timestamp_ids;
2788   DeserializeSecurityInfo(security_info, &cert_id, &cert_status,
2789                           &security_bits, &connection_status,
2790                           &signed_certificate_timestamp_ids);
2791   // TODO(alcutter,eranm): Pass signed_certificate_timestamp_ids into details
2792   LoadFromMemoryCacheDetails details(
2793       url, GetRenderProcessHost()->GetID(), cert_id, cert_status, http_method,
2794       mime_type, resource_type);
2795
2796   controller_.ssl_manager()->DidLoadFromMemoryCache(details);
2797
2798   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2799                     DidLoadResourceFromMemoryCache(details));
2800
2801   if (url.is_valid() && url.SchemeIsHTTPOrHTTPS()) {
2802     scoped_refptr<net::URLRequestContextGetter> request_context(
2803         resource_type == RESOURCE_TYPE_MEDIA ?
2804             GetBrowserContext()->GetMediaRequestContextForRenderProcess(
2805                 GetRenderProcessHost()->GetID()) :
2806             GetBrowserContext()->GetRequestContextForRenderProcess(
2807                 GetRenderProcessHost()->GetID()));
2808     BrowserThread::PostTask(
2809         BrowserThread::IO,
2810         FROM_HERE,
2811         base::Bind(&NotifyCacheOnIO, request_context, url, http_method));
2812   }
2813 }
2814
2815 void WebContentsImpl::OnDidDisplayInsecureContent() {
2816   RecordAction(base::UserMetricsAction("SSL.DisplayedInsecureContent"));
2817   displayed_insecure_content_ = true;
2818   SSLManager::NotifySSLInternalStateChanged(
2819       GetController().GetBrowserContext());
2820 }
2821
2822 void WebContentsImpl::OnDidRunInsecureContent(
2823     const std::string& security_origin, const GURL& target_url) {
2824   LOG(WARNING) << security_origin << " ran insecure content from "
2825                << target_url.possibly_invalid_spec();
2826   RecordAction(base::UserMetricsAction("SSL.RanInsecureContent"));
2827   if (EndsWith(security_origin, kDotGoogleDotCom, false))
2828     RecordAction(base::UserMetricsAction("SSL.RanInsecureContentGoogle"));
2829   controller_.ssl_manager()->DidRunInsecureContent(security_origin);
2830   displayed_insecure_content_ = true;
2831   SSLManager::NotifySSLInternalStateChanged(
2832       GetController().GetBrowserContext());
2833 }
2834
2835 void WebContentsImpl::OnDocumentLoadedInFrame() {
2836   if (!HasValidFrameSource())
2837     return;
2838
2839   RenderFrameHostImpl* rfh =
2840       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2841   FOR_EACH_OBSERVER(
2842       WebContentsObserver, observers_, DocumentLoadedInFrame(rfh));
2843 }
2844
2845 void WebContentsImpl::OnDidFinishLoad(const GURL& url) {
2846   if (!HasValidFrameSource())
2847     return;
2848
2849   GURL validated_url(url);
2850   RenderProcessHost* render_process_host =
2851       render_frame_message_source_->GetProcess();
2852   render_process_host->FilterURL(false, &validated_url);
2853
2854   RenderFrameHostImpl* rfh =
2855       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2856   FOR_EACH_OBSERVER(
2857       WebContentsObserver, observers_, DidFinishLoad(rfh, validated_url));
2858 }
2859
2860 void WebContentsImpl::OnGoToEntryAtOffset(int offset) {
2861   if (!delegate_ || delegate_->OnGoToEntryOffset(offset))
2862     controller_.GoToOffset(offset);
2863 }
2864
2865 void WebContentsImpl::OnUpdateZoomLimits(int minimum_percent,
2866                                          int maximum_percent) {
2867   minimum_zoom_percent_ = minimum_percent;
2868   maximum_zoom_percent_ = maximum_percent;
2869 }
2870
2871 void WebContentsImpl::OnEnumerateDirectory(int request_id,
2872                                            const base::FilePath& path) {
2873   if (!delegate_)
2874     return;
2875
2876   ChildProcessSecurityPolicyImpl* policy =
2877       ChildProcessSecurityPolicyImpl::GetInstance();
2878   if (policy->CanReadFile(GetRenderProcessHost()->GetID(), path))
2879     delegate_->EnumerateDirectory(this, request_id, path);
2880 }
2881
2882 void WebContentsImpl::OnRegisterProtocolHandler(const std::string& protocol,
2883                                                 const GURL& url,
2884                                                 const base::string16& title,
2885                                                 bool user_gesture) {
2886   if (!delegate_)
2887     return;
2888
2889   ChildProcessSecurityPolicyImpl* policy =
2890       ChildProcessSecurityPolicyImpl::GetInstance();
2891   if (policy->IsPseudoScheme(protocol))
2892     return;
2893
2894   delegate_->RegisterProtocolHandler(this, protocol, url, user_gesture);
2895 }
2896
2897 void WebContentsImpl::OnUnregisterProtocolHandler(const std::string& protocol,
2898                                                   const GURL& url,
2899                                                   bool user_gesture) {
2900   if (!delegate_)
2901     return;
2902
2903   ChildProcessSecurityPolicyImpl* policy =
2904       ChildProcessSecurityPolicyImpl::GetInstance();
2905   if (policy->IsPseudoScheme(protocol))
2906     return;
2907
2908   delegate_->UnregisterProtocolHandler(this, protocol, url, user_gesture);
2909 }
2910
2911 void WebContentsImpl::OnFindReply(int request_id,
2912                                   int number_of_matches,
2913                                   const gfx::Rect& selection_rect,
2914                                   int active_match_ordinal,
2915                                   bool final_update) {
2916   if (delegate_) {
2917     delegate_->FindReply(this, request_id, number_of_matches, selection_rect,
2918                          active_match_ordinal, final_update);
2919   }
2920 }
2921
2922 #if defined(OS_ANDROID)
2923 void WebContentsImpl::OnFindMatchRectsReply(
2924     int version,
2925     const std::vector<gfx::RectF>& rects,
2926     const gfx::RectF& active_rect) {
2927   if (delegate_)
2928     delegate_->FindMatchRectsReply(this, version, rects, active_rect);
2929 }
2930
2931 void WebContentsImpl::OnOpenDateTimeDialog(
2932     const ViewHostMsg_DateTimeDialogValue_Params& value) {
2933   date_time_chooser_->ShowDialog(GetTopLevelNativeWindow(),
2934                                  GetRenderViewHost(),
2935                                  value.dialog_type,
2936                                  value.dialog_value,
2937                                  value.minimum,
2938                                  value.maximum,
2939                                  value.step,
2940                                  value.suggestions);
2941 }
2942 #endif
2943
2944 void WebContentsImpl::OnDomOperationResponse(const std::string& json_string,
2945                                              int automation_id) {
2946   DomOperationNotificationDetails details(json_string, automation_id);
2947   NotificationService::current()->Notify(
2948       NOTIFICATION_DOM_OPERATION_RESPONSE,
2949       Source<WebContents>(this),
2950       Details<DomOperationNotificationDetails>(&details));
2951 }
2952
2953 void WebContentsImpl::OnAppCacheAccessed(const GURL& manifest_url,
2954                                          bool blocked_by_policy) {
2955   // Notify observers about navigation.
2956   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2957                     AppCacheAccessed(manifest_url, blocked_by_policy));
2958 }
2959
2960 void WebContentsImpl::OnOpenColorChooser(
2961     int color_chooser_id,
2962     SkColor color,
2963     const std::vector<ColorSuggestion>& suggestions) {
2964   if (!HasValidFrameSource())
2965     return;
2966
2967   ColorChooser* new_color_chooser = delegate_ ?
2968       delegate_->OpenColorChooser(this, color, suggestions) :
2969       NULL;
2970   if (!new_color_chooser)
2971     return;
2972   if (color_chooser_info_.get())
2973     color_chooser_info_->chooser->End();
2974
2975   color_chooser_info_.reset(new ColorChooserInfo(
2976       render_frame_message_source_->GetProcess()->GetID(),
2977       render_frame_message_source_->GetRoutingID(),
2978       new_color_chooser,
2979       color_chooser_id));
2980 }
2981
2982 void WebContentsImpl::OnEndColorChooser(int color_chooser_id) {
2983   if (color_chooser_info_ &&
2984       color_chooser_id == color_chooser_info_->identifier)
2985     color_chooser_info_->chooser->End();
2986 }
2987
2988 void WebContentsImpl::OnSetSelectedColorInColorChooser(int color_chooser_id,
2989                                                        SkColor color) {
2990   if (color_chooser_info_ &&
2991       color_chooser_id == color_chooser_info_->identifier)
2992     color_chooser_info_->chooser->SetSelectedColor(color);
2993 }
2994
2995 // This exists for render views that don't have a WebUI, but do have WebUI
2996 // bindings enabled.
2997 void WebContentsImpl::OnWebUISend(const GURL& source_url,
2998                                   const std::string& name,
2999                                   const base::ListValue& args) {
3000   if (delegate_)
3001     delegate_->WebUISend(this, source_url, name, args);
3002 }
3003
3004 #if defined(ENABLE_PLUGINS)
3005 void WebContentsImpl::OnPepperPluginHung(int plugin_child_id,
3006                                          const base::FilePath& path,
3007                                          bool is_hung) {
3008   UMA_HISTOGRAM_COUNTS("Pepper.PluginHung", 1);
3009
3010   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3011                     PluginHungStatusChanged(plugin_child_id, path, is_hung));
3012 }
3013
3014 void WebContentsImpl::OnPluginCrashed(const base::FilePath& plugin_path,
3015                                       base::ProcessId plugin_pid) {
3016   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3017                     PluginCrashed(plugin_path, plugin_pid));
3018 }
3019
3020 void WebContentsImpl::OnRequestPpapiBrokerPermission(
3021     int routing_id,
3022     const GURL& url,
3023     const base::FilePath& plugin_path) {
3024   if (!delegate_) {
3025     OnPpapiBrokerPermissionResult(routing_id, false);
3026     return;
3027   }
3028
3029   if (!delegate_->RequestPpapiBrokerPermission(
3030       this, url, plugin_path,
3031       base::Bind(&WebContentsImpl::OnPpapiBrokerPermissionResult,
3032                  base::Unretained(this), routing_id))) {
3033     NOTIMPLEMENTED();
3034     OnPpapiBrokerPermissionResult(routing_id, false);
3035   }
3036 }
3037
3038 void WebContentsImpl::OnPpapiBrokerPermissionResult(int routing_id,
3039                                                     bool result) {
3040   Send(new ViewMsg_PpapiBrokerPermissionResult(routing_id, result));
3041 }
3042
3043 void WebContentsImpl::OnBrowserPluginMessage(RenderFrameHost* render_frame_host,
3044                                              const IPC::Message& message) {
3045   CHECK(!browser_plugin_embedder_.get());
3046   CreateBrowserPluginEmbedderIfNecessary();
3047   browser_plugin_embedder_->OnMessageReceived(message, render_frame_host);
3048 }
3049 #endif  // defined(ENABLE_PLUGINS)
3050
3051 void WebContentsImpl::OnDidDownloadImage(
3052     int id,
3053     int http_status_code,
3054     const GURL& image_url,
3055     const std::vector<SkBitmap>& bitmaps,
3056     const std::vector<gfx::Size>& original_bitmap_sizes) {
3057   if (bitmaps.size() != original_bitmap_sizes.size())
3058     return;
3059
3060   ImageDownloadMap::iterator iter = image_download_map_.find(id);
3061   if (iter == image_download_map_.end()) {
3062     // Currently WebContents notifies us of ANY downloads so that it is
3063     // possible to get here.
3064     return;
3065   }
3066   if (!iter->second.is_null()) {
3067     iter->second.Run(
3068         id, http_status_code, image_url, bitmaps, original_bitmap_sizes);
3069   }
3070   image_download_map_.erase(id);
3071 }
3072
3073 void WebContentsImpl::OnUpdateFaviconURL(
3074     const std::vector<FaviconURL>& candidates) {
3075   // We get updated favicon URLs after the page stops loading. If a cross-site
3076   // navigation occurs while a page is still loading, the initial page
3077   // may stop loading and send us updated favicon URLs after the navigation
3078   // for the new page has committed.
3079   RenderViewHostImpl* rvhi =
3080       static_cast<RenderViewHostImpl*>(render_view_message_source_);
3081   if (!rvhi->is_active())
3082     return;
3083
3084   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3085                     DidUpdateFaviconURL(candidates));
3086 }
3087
3088 void WebContentsImpl::CreateAudioPowerSaveBlocker() {
3089   DCHECK(!audio_power_save_blocker_);
3090   audio_power_save_blocker_ = PowerSaveBlocker::Create(
3091       PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension,
3092       PowerSaveBlocker::kReasonAudioPlayback, "Playing audio");
3093 }
3094
3095 void WebContentsImpl::CreateVideoPowerSaveBlocker() {
3096   DCHECK(!video_power_save_blocker_);
3097   DCHECK(!active_video_players_.empty());
3098   video_power_save_blocker_ = PowerSaveBlocker::Create(
3099       PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep,
3100       PowerSaveBlocker::kReasonVideoPlayback, "Playing video");
3101 #if defined(OS_ANDROID)
3102   static_cast<PowerSaveBlockerImpl*>(video_power_save_blocker_.get())
3103       ->InitDisplaySleepBlocker(this);
3104 #endif
3105 }
3106
3107 void WebContentsImpl::MaybeReleasePowerSaveBlockers() {
3108   // If there are no more audio players and we don't have audio stream
3109   // monitoring, release the audio power save blocker here instead of during
3110   // NotifyNavigationStateChanged().
3111   if (active_audio_players_.empty() &&
3112       !audio_state_provider_->IsAudioStateAvailable()) {
3113     audio_power_save_blocker_.reset();
3114   }
3115
3116   // If there are no more video players, clear the video power save blocker.
3117   if (active_video_players_.empty())
3118     video_power_save_blocker_.reset();
3119 }
3120
3121 void WebContentsImpl::OnMediaPlayingNotification(int64 player_cookie,
3122                                                  bool has_video,
3123                                                  bool has_audio,
3124                                                  bool is_remote) {
3125   // Ignore the videos playing remotely and don't hold the wake lock for the
3126   // screen.
3127   if (is_remote) return;
3128
3129   if (has_audio) {
3130     AddMediaPlayerEntry(player_cookie, &active_audio_players_);
3131
3132     // If we don't have audio stream monitoring, allocate the audio power save
3133     // blocker here instead of during NotifyNavigationStateChanged().
3134     if (!audio_power_save_blocker_ &&
3135         !audio_state_provider_->IsAudioStateAvailable()) {
3136       CreateAudioPowerSaveBlocker();
3137     }
3138   }
3139
3140   if (has_video) {
3141     AddMediaPlayerEntry(player_cookie, &active_video_players_);
3142
3143     // If we're not hidden and have just created a player, create a blocker.
3144     if (!video_power_save_blocker_ && !IsHidden())
3145       CreateVideoPowerSaveBlocker();
3146   }
3147
3148   FOR_EACH_OBSERVER(WebContentsObserver, observers_, MediaStartedPlaying());
3149 }
3150
3151 void WebContentsImpl::OnMediaPausedNotification(int64 player_cookie) {
3152   RemoveMediaPlayerEntry(player_cookie, &active_audio_players_);
3153   RemoveMediaPlayerEntry(player_cookie, &active_video_players_);
3154   MaybeReleasePowerSaveBlockers();
3155
3156   FOR_EACH_OBSERVER(WebContentsObserver, observers_, MediaPaused());
3157 }
3158
3159 void WebContentsImpl::OnFirstVisuallyNonEmptyPaint() {
3160   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3161                     DidFirstVisuallyNonEmptyPaint());
3162
3163   if (theme_color_ != last_sent_theme_color_) {
3164     // Theme color should have updated by now if there was one.
3165     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3166                       DidChangeThemeColor(theme_color_));
3167     last_sent_theme_color_ = theme_color_;
3168   }
3169 }
3170
3171 void WebContentsImpl::DidChangeVisibleSSLState() {
3172   if (delegate_)
3173     delegate_->VisibleSSLStateChanged(this);
3174 }
3175
3176 void WebContentsImpl::NotifyBeforeFormRepostWarningShow() {
3177   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3178                     BeforeFormRepostWarningShow());
3179 }
3180
3181 void WebContentsImpl::ActivateAndShowRepostFormWarningDialog() {
3182   Activate();
3183   if (delegate_)
3184     delegate_->ShowRepostFormWarningDialog(this);
3185 }
3186
3187 bool WebContentsImpl::HasAccessedInitialDocument() {
3188   return has_accessed_initial_document_;
3189 }
3190
3191 // Notifies the RenderWidgetHost instance about the fact that the page is
3192 // loading, or done loading.
3193 void WebContentsImpl::SetIsLoading(bool is_loading,
3194                                    bool to_different_document,
3195                                    LoadNotificationDetails* details) {
3196   if (is_loading == is_loading_)
3197     return;
3198
3199   if (!is_loading) {
3200     load_state_ = net::LoadStateWithParam(net::LOAD_STATE_IDLE,
3201                                           base::string16());
3202     load_state_host_.clear();
3203     upload_size_ = 0;
3204     upload_position_ = 0;
3205   }
3206
3207   GetRenderManager()->SetIsLoading(is_loading);
3208
3209   is_loading_ = is_loading;
3210   waiting_for_response_ = is_loading;
3211   is_load_to_different_document_ = to_different_document;
3212
3213   if (delegate_)
3214     delegate_->LoadingStateChanged(this, to_different_document);
3215   NotifyNavigationStateChanged(INVALIDATE_TYPE_LOAD);
3216
3217   std::string url = (details ? details->url.possibly_invalid_spec() : "NULL");
3218   if (is_loading) {
3219     TRACE_EVENT_ASYNC_BEGIN1("browser,navigation", "WebContentsImpl Loading",
3220                              this, "URL", url);
3221     FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidStartLoading());
3222   } else {
3223     TRACE_EVENT_ASYNC_END1("browser,navigation", "WebContentsImpl Loading",
3224                            this, "URL", url);
3225     FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidStopLoading());
3226   }
3227
3228   // TODO(avi): Remove. http://crbug.com/170921
3229   int type = is_loading ? NOTIFICATION_LOAD_START : NOTIFICATION_LOAD_STOP;
3230   NotificationDetails det = NotificationService::NoDetails();
3231   if (details)
3232       det = Details<LoadNotificationDetails>(details);
3233   NotificationService::current()->Notify(
3234       type, Source<NavigationController>(&controller_), det);
3235 }
3236
3237 void WebContentsImpl::MoveRangeSelectionExtent(const gfx::Point& extent) {
3238   RenderFrameHost* focused_frame = GetFocusedFrame();
3239   if (!focused_frame)
3240     return;
3241
3242   focused_frame->Send(new InputMsg_MoveRangeSelectionExtent(
3243       focused_frame->GetRoutingID(), extent));
3244 }
3245
3246 void WebContentsImpl::SelectRange(const gfx::Point& base,
3247                                   const gfx::Point& extent) {
3248   RenderFrameHost* focused_frame = GetFocusedFrame();
3249   if (!focused_frame)
3250     return;
3251
3252   focused_frame->Send(
3253       new InputMsg_SelectRange(focused_frame->GetRoutingID(), base, extent));
3254 }
3255
3256 void WebContentsImpl::UpdateMaxPageIDIfNecessary(RenderViewHost* rvh) {
3257   // If we are creating a RVH for a restored controller, then we need to make
3258   // sure the RenderView starts with a next_page_id_ larger than the number
3259   // of restored entries.  This must be called before the RenderView starts
3260   // navigating (to avoid a race between the browser updating max_page_id and
3261   // the renderer updating next_page_id_).  Because of this, we only call this
3262   // from CreateRenderView and allow that to notify the RenderView for us.
3263   int max_restored_page_id = controller_.GetMaxRestoredPageID();
3264   if (max_restored_page_id >
3265       GetMaxPageIDForSiteInstance(rvh->GetSiteInstance()))
3266     UpdateMaxPageIDForSiteInstance(rvh->GetSiteInstance(),
3267                                    max_restored_page_id);
3268 }
3269
3270 bool WebContentsImpl::UpdateTitleForEntry(NavigationEntryImpl* entry,
3271                                           const base::string16& title) {
3272   // For file URLs without a title, use the pathname instead. In the case of a
3273   // synthesized title, we don't want the update to count toward the "one set
3274   // per page of the title to history."
3275   base::string16 final_title;
3276   bool explicit_set;
3277   if (entry && entry->GetURL().SchemeIsFile() && title.empty()) {
3278     final_title = base::UTF8ToUTF16(entry->GetURL().ExtractFileName());
3279     explicit_set = false;  // Don't count synthetic titles toward the set limit.
3280   } else {
3281     base::TrimWhitespace(title, base::TRIM_ALL, &final_title);
3282     explicit_set = true;
3283   }
3284
3285   // If a page is created via window.open and never navigated,
3286   // there will be no navigation entry. In this situation,
3287   // |page_title_when_no_navigation_entry_| will be used for page title.
3288   if (entry) {
3289     if (final_title == entry->GetTitle())
3290       return false;  // Nothing changed, don't bother.
3291
3292     entry->SetTitle(final_title);
3293   } else {
3294     if (page_title_when_no_navigation_entry_ == final_title)
3295       return false;  // Nothing changed, don't bother.
3296
3297     page_title_when_no_navigation_entry_ = final_title;
3298   }
3299
3300   // Lastly, set the title for the view.
3301   view_->SetPageTitle(final_title);
3302
3303   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3304                     TitleWasSet(entry, explicit_set));
3305
3306   // TODO(avi): Remove. http://crbug.com/170921
3307   std::pair<NavigationEntry*, bool> details =
3308       std::make_pair(entry, explicit_set);
3309   NotificationService::current()->Notify(
3310       NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED,
3311       Source<WebContents>(this),
3312       Details<std::pair<NavigationEntry*, bool> >(&details));
3313
3314   return true;
3315 }
3316
3317 void WebContentsImpl::SendChangeLoadProgress() {
3318   loading_last_progress_update_ = base::TimeTicks::Now();
3319   if (delegate_)
3320     delegate_->LoadProgressChanged(this, frame_tree_.load_progress());
3321 }
3322
3323 void WebContentsImpl::ResetLoadProgressState() {
3324   frame_tree_.ResetLoadProgress();
3325   loading_weak_factory_.InvalidateWeakPtrs();
3326   loading_last_progress_update_ = base::TimeTicks();
3327 }
3328
3329 void WebContentsImpl::NotifyViewSwapped(RenderViewHost* old_host,
3330                                         RenderViewHost* new_host) {
3331   // After sending out a swap notification, we need to send a disconnect
3332   // notification so that clients that pick up a pointer to |this| can NULL the
3333   // pointer.  See Bug 1230284.
3334   notify_disconnection_ = true;
3335   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3336                     RenderViewHostChanged(old_host, new_host));
3337
3338   // TODO(avi): Remove. http://crbug.com/170921
3339   std::pair<RenderViewHost*, RenderViewHost*> details =
3340       std::make_pair(old_host, new_host);
3341   NotificationService::current()->Notify(
3342       NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
3343       Source<WebContents>(this),
3344       Details<std::pair<RenderViewHost*, RenderViewHost*> >(&details));
3345
3346   // Ensure that the associated embedder gets cleared after a RenderViewHost
3347   // gets swapped, so we don't reuse the same embedder next time a
3348   // RenderViewHost is attached to this WebContents.
3349   RemoveBrowserPluginEmbedder();
3350 }
3351
3352 void WebContentsImpl::NotifyFrameSwapped(RenderFrameHost* old_host,
3353                                          RenderFrameHost* new_host) {
3354   FOR_EACH_OBSERVER(WebContentsObserver,
3355                     observers_,
3356                     RenderFrameHostChanged(old_host, new_host));
3357 }
3358
3359 // TODO(avi): Remove this entire function because this notification is already
3360 // covered by two observer functions. http://crbug.com/170921
3361 void WebContentsImpl::NotifyDisconnected() {
3362   if (!notify_disconnection_)
3363     return;
3364
3365   notify_disconnection_ = false;
3366   NotificationService::current()->Notify(
3367       NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
3368       Source<WebContents>(this),
3369       NotificationService::NoDetails());
3370 }
3371
3372 void WebContentsImpl::NotifyNavigationEntryCommitted(
3373     const LoadCommittedDetails& load_details) {
3374   FOR_EACH_OBSERVER(
3375       WebContentsObserver, observers_, NavigationEntryCommitted(load_details));
3376 }
3377
3378 bool WebContentsImpl::OnMessageReceived(RenderFrameHost* render_frame_host,
3379                                         const IPC::Message& message) {
3380   return OnMessageReceived(NULL, render_frame_host, message);
3381 }
3382
3383 const GURL& WebContentsImpl::GetMainFrameLastCommittedURL() const {
3384   return GetLastCommittedURL();
3385 }
3386
3387 void WebContentsImpl::RenderFrameCreated(RenderFrameHost* render_frame_host) {
3388   // Note this is only for subframes, the notification for the main frame
3389   // happens in RenderViewCreated.
3390   FOR_EACH_OBSERVER(WebContentsObserver,
3391                     observers_,
3392                     RenderFrameCreated(render_frame_host));
3393   SetAccessibilityModeOnFrame(accessibility_mode_, render_frame_host);
3394 }
3395
3396 void WebContentsImpl::RenderFrameDeleted(RenderFrameHost* render_frame_host) {
3397   ClearPowerSaveBlockers(render_frame_host);
3398   FOR_EACH_OBSERVER(WebContentsObserver,
3399                     observers_,
3400                     RenderFrameDeleted(render_frame_host));
3401 }
3402
3403 void WebContentsImpl::WorkerCrashed(RenderFrameHost* render_frame_host) {
3404   if (delegate_)
3405     delegate_->WorkerCrashed(this);
3406 }
3407
3408 void WebContentsImpl::ShowContextMenu(RenderFrameHost* render_frame_host,
3409                                       const ContextMenuParams& params) {
3410   ContextMenuParams context_menu_params(params);
3411   // Allow WebContentsDelegates to handle the context menu operation first.
3412   if (GetBrowserPluginGuest()) {
3413     WebContentsViewGuest* view_guest =
3414         static_cast<WebContentsViewGuest*>(GetView());
3415     context_menu_params = view_guest->ConvertContextMenuParams(params);
3416   }
3417   if (delegate_ && delegate_->HandleContextMenu(context_menu_params))
3418     return;
3419
3420   render_view_host_delegate_view_->ShowContextMenu(render_frame_host,
3421                                                    context_menu_params);
3422 }
3423
3424 void WebContentsImpl::RunJavaScriptMessage(
3425     RenderFrameHost* render_frame_host,
3426     const base::string16& message,
3427     const base::string16& default_prompt,
3428     const GURL& frame_url,
3429     JavaScriptMessageType javascript_message_type,
3430     IPC::Message* reply_msg) {
3431   // Suppress JavaScript dialogs when requested. Also suppress messages when
3432   // showing an interstitial as it's shown over the previous page and we don't
3433   // want the hidden page's dialogs to interfere with the interstitial.
3434   bool suppress_this_message =
3435       static_cast<RenderFrameHostImpl*>(render_frame_host)->is_swapped_out() ||
3436       ShowingInterstitialPage() || !delegate_ ||
3437       delegate_->ShouldSuppressDialogs(this) ||
3438       !delegate_->GetJavaScriptDialogManager(this);
3439
3440   if (!suppress_this_message) {
3441     std::string accept_lang = GetContentClient()->browser()->
3442       GetAcceptLangs(GetBrowserContext());
3443     dialog_manager_ = delegate_->GetJavaScriptDialogManager(this);
3444     dialog_manager_->RunJavaScriptDialog(
3445         this,
3446         frame_url.GetOrigin(),
3447         accept_lang,
3448         javascript_message_type,
3449         message,
3450         default_prompt,
3451         base::Bind(&WebContentsImpl::OnDialogClosed,
3452                    base::Unretained(this),
3453                    render_frame_host->GetProcess()->GetID(),
3454                    render_frame_host->GetRoutingID(),
3455                    reply_msg,
3456                    false),
3457         &suppress_this_message);
3458   }
3459
3460   if (suppress_this_message) {
3461     // If we are suppressing messages, just reply as if the user immediately
3462     // pressed "Cancel", passing true to |dialog_was_suppressed|.
3463     OnDialogClosed(render_frame_host->GetProcess()->GetID(),
3464                    render_frame_host->GetRoutingID(), reply_msg,
3465                    true, false, base::string16());
3466   }
3467
3468   // OnDialogClosed (two lines up) may have caused deletion of this object (see
3469   // http://crbug.com/288961 ). The only safe thing to do here is return.
3470 }
3471
3472 void WebContentsImpl::RunBeforeUnloadConfirm(
3473     RenderFrameHost* render_frame_host,
3474     const base::string16& message,
3475     bool is_reload,
3476     IPC::Message* reply_msg) {
3477   RenderFrameHostImpl* rfhi =
3478       static_cast<RenderFrameHostImpl*>(render_frame_host);
3479   if (delegate_)
3480     delegate_->WillRunBeforeUnloadConfirm();
3481
3482   bool suppress_this_message =
3483       rfhi->rfh_state() != RenderFrameHostImpl::STATE_DEFAULT || !delegate_ ||
3484       delegate_->ShouldSuppressDialogs(this) ||
3485       !delegate_->GetJavaScriptDialogManager(this);
3486   if (suppress_this_message) {
3487     rfhi->JavaScriptDialogClosed(reply_msg, true, base::string16(), true);
3488     return;
3489   }
3490
3491   is_showing_before_unload_dialog_ = true;
3492   dialog_manager_ = delegate_->GetJavaScriptDialogManager(this);
3493   dialog_manager_->RunBeforeUnloadDialog(
3494       this, message, is_reload,
3495       base::Bind(&WebContentsImpl::OnDialogClosed, base::Unretained(this),
3496                  render_frame_host->GetProcess()->GetID(),
3497                  render_frame_host->GetRoutingID(), reply_msg,
3498                  false));
3499 }
3500
3501 WebContents* WebContentsImpl::GetAsWebContents() {
3502   return this;
3503 }
3504
3505 bool WebContentsImpl::IsNeverVisible() {
3506   if (!delegate_)
3507     return false;
3508   return delegate_->IsNeverVisible(this);
3509 }
3510
3511 #if defined(OS_WIN)
3512 gfx::NativeViewAccessible WebContentsImpl::GetParentNativeViewAccessible() {
3513   return accessible_parent_;
3514 }
3515 #endif
3516
3517 RenderViewHostDelegateView* WebContentsImpl::GetDelegateView() {
3518   return render_view_host_delegate_view_;
3519 }
3520
3521 RendererPreferences WebContentsImpl::GetRendererPrefs(
3522     BrowserContext* browser_context) const {
3523   return renderer_preferences_;
3524 }
3525
3526 gfx::Rect WebContentsImpl::GetRootWindowResizerRect() const {
3527   if (delegate_)
3528     return delegate_->GetRootWindowResizerRect();
3529   return gfx::Rect();
3530 }
3531
3532 void WebContentsImpl::RemoveBrowserPluginEmbedder() {
3533   if (browser_plugin_embedder_)
3534     browser_plugin_embedder_.reset();
3535 }
3536
3537 void WebContentsImpl::RenderViewCreated(RenderViewHost* render_view_host) {
3538   // Don't send notifications if we are just creating a swapped-out RVH for
3539   // the opener chain.  These won't be used for view-source or WebUI, so it's
3540   // ok to return early.
3541   if (!static_cast<RenderViewHostImpl*>(render_view_host)->is_active())
3542     return;
3543
3544   if (delegate_)
3545     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
3546
3547   NotificationService::current()->Notify(
3548       NOTIFICATION_WEB_CONTENTS_RENDER_VIEW_HOST_CREATED,
3549       Source<WebContents>(this),
3550       Details<RenderViewHost>(render_view_host));
3551
3552   // When we're creating views, we're still doing initial setup, so we always
3553   // use the pending Web UI rather than any possibly existing committed one.
3554   if (GetRenderManager()->pending_web_ui())
3555     GetRenderManager()->pending_web_ui()->RenderViewCreated(render_view_host);
3556
3557   NavigationEntry* entry = controller_.GetPendingEntry();
3558   if (entry && entry->IsViewSourceMode()) {
3559     // Put the renderer in view source mode.
3560     render_view_host->Send(
3561         new ViewMsg_EnableViewSourceMode(render_view_host->GetRoutingID()));
3562   }
3563
3564   view_->RenderViewCreated(render_view_host);
3565
3566   FOR_EACH_OBSERVER(
3567       WebContentsObserver, observers_, RenderViewCreated(render_view_host));
3568 }
3569
3570 void WebContentsImpl::RenderViewReady(RenderViewHost* rvh) {
3571   if (rvh != GetRenderViewHost()) {
3572     // Don't notify the world, since this came from a renderer in the
3573     // background.
3574     return;
3575   }
3576
3577   notify_disconnection_ = true;
3578   // TODO(avi): Remove. http://crbug.com/170921
3579   NotificationService::current()->Notify(
3580       NOTIFICATION_WEB_CONTENTS_CONNECTED,
3581       Source<WebContents>(this),
3582       NotificationService::NoDetails());
3583
3584   bool was_crashed = IsCrashed();
3585   SetIsCrashed(base::TERMINATION_STATUS_STILL_RUNNING, 0);
3586
3587   // Restore the focus to the tab (otherwise the focus will be on the top
3588   // window).
3589   if (was_crashed && !FocusLocationBarByDefault() &&
3590       (!delegate_ || delegate_->ShouldFocusPageAfterCrash())) {
3591     view_->Focus();
3592   }
3593
3594   FOR_EACH_OBSERVER(WebContentsObserver, observers_, RenderViewReady());
3595 }
3596
3597 void WebContentsImpl::RenderViewTerminated(RenderViewHost* rvh,
3598                                            base::TerminationStatus status,
3599                                            int error_code) {
3600   if (rvh != GetRenderViewHost()) {
3601     // The pending page's RenderViewHost is gone.
3602     return;
3603   }
3604
3605   // Ensure fullscreen mode is exited in the |delegate_| since a crashed
3606   // renderer may not have made a clean exit.
3607   if (IsFullscreenForCurrentTab())
3608     ExitFullscreenMode();
3609
3610   // Cancel any visible dialogs so they are not left dangling over the sad tab.
3611   if (dialog_manager_)
3612     dialog_manager_->CancelActiveAndPendingDialogs(this);
3613
3614   if (delegate_)
3615     delegate_->HideValidationMessage(this);
3616
3617   SetIsLoading(false, true, nullptr);
3618   NotifyDisconnected();
3619   SetIsCrashed(status, error_code);
3620
3621   // Reset the loading progress. TODO(avi): What does it mean to have a
3622   // "renderer crash" when there is more than one renderer process serving a
3623   // webpage? Once this function is called at a more granular frame level, we
3624   // probably will need to more granularly reset the state here.
3625   ResetLoadProgressState();
3626
3627   FOR_EACH_OBSERVER(WebContentsObserver,
3628                     observers_,
3629                     RenderProcessGone(GetCrashedStatus()));
3630 }
3631
3632 void WebContentsImpl::RenderViewDeleted(RenderViewHost* rvh) {
3633   FOR_EACH_OBSERVER(WebContentsObserver, observers_, RenderViewDeleted(rvh));
3634 }
3635
3636 void WebContentsImpl::UpdateState(RenderViewHost* rvh,
3637                                   int32 page_id,
3638                                   const PageState& page_state) {
3639   // Ensure that this state update comes from a RenderViewHost that belongs to
3640   // this WebContents.
3641   // TODO(nasko): This should go through RenderFrameHost.
3642   // TODO(creis): We can't update state for cross-process subframes until we
3643   // have FrameNavigationEntries.  Once we do, this should be a DCHECK.
3644   if (rvh->GetDelegate()->GetAsWebContents() != this)
3645     return;
3646
3647   // We must be prepared to handle state updates for any page, these occur
3648   // when the user is scrolling and entering form data, as well as when we're
3649   // leaving a page, in which case our state may have already been moved to
3650   // the next page. The navigation controller will look up the appropriate
3651   // NavigationEntry and update it when it is notified via the delegate.
3652
3653   int entry_index = controller_.GetEntryIndexWithPageID(
3654       rvh->GetSiteInstance(), page_id);
3655   if (entry_index < 0)
3656     return;
3657   NavigationEntry* entry = controller_.GetEntryAtIndex(entry_index);
3658
3659   if (page_state == entry->GetPageState())
3660     return;  // Nothing to update.
3661   entry->SetPageState(page_state);
3662   controller_.NotifyEntryChanged(entry, entry_index);
3663 }
3664
3665 void WebContentsImpl::UpdateTargetURL(RenderViewHost* render_view_host,
3666                                       const GURL& url) {
3667   if (fullscreen_widget_routing_id_ != MSG_ROUTING_NONE) {
3668     // If we're fullscreen only update the url if it's from the fullscreen
3669     // renderer.
3670     RenderWidgetHostView* fs = GetFullscreenRenderWidgetHostView();
3671     if (fs && fs->GetRenderWidgetHost() != render_view_host)
3672       return;
3673   }
3674   if (delegate_)
3675     delegate_->UpdateTargetURL(this, url);
3676 }
3677
3678 void WebContentsImpl::Close(RenderViewHost* rvh) {
3679 #if defined(OS_MACOSX)
3680   // The UI may be in an event-tracking loop, such as between the
3681   // mouse-down and mouse-up in text selection or a button click.
3682   // Defer the close until after tracking is complete, so that we
3683   // don't free objects out from under the UI.
3684   // TODO(shess): This could get more fine-grained.  For instance,
3685   // closing a tab in another window while selecting text in the
3686   // current window's Omnibox should be just fine.
3687   if (view_->IsEventTracking()) {
3688     view_->CloseTabAfterEventTracking();
3689     return;
3690   }
3691 #endif
3692
3693   // Ignore this if it comes from a RenderViewHost that we aren't showing.
3694   if (delegate_ && rvh == GetRenderViewHost())
3695     delegate_->CloseContents(this);
3696 }
3697
3698 void WebContentsImpl::SwappedOut(RenderFrameHost* rfh) {
3699   if (delegate_ && rfh->GetRenderViewHost() == GetRenderViewHost())
3700     delegate_->SwappedOut(this);
3701 }
3702
3703 void WebContentsImpl::DidDeferAfterResponseStarted(
3704     const TransitionLayerData& transition_data) {
3705 #if defined(OS_ANDROID)
3706   GetWebContentsAndroid()->DidDeferAfterResponseStarted(transition_data);
3707 #endif
3708 }
3709
3710 bool WebContentsImpl::WillHandleDeferAfterResponseStarted() {
3711 #if defined(OS_ANDROID)
3712   return GetWebContentsAndroid()->WillHandleDeferAfterResponseStarted();
3713 #else
3714   return false;
3715 #endif
3716 }
3717
3718 void WebContentsImpl::RequestMove(const gfx::Rect& new_bounds) {
3719   if (delegate_ && delegate_->IsPopupOrPanel(this))
3720     delegate_->MoveContents(this, new_bounds);
3721 }
3722
3723 void WebContentsImpl::DidStartLoading(FrameTreeNode* frame_tree_node,
3724                                       bool to_different_document) {
3725   SetIsLoading(true, to_different_document, nullptr);
3726
3727   // Notify accessibility that the user is navigating away from the
3728   // current document.
3729   //
3730   // TODO(dmazzoni): do this using a WebContentsObserver.
3731   BrowserAccessibilityManager* manager =
3732       frame_tree_node->current_frame_host()->browser_accessibility_manager();
3733   if (manager)
3734     manager->UserIsNavigatingAway();
3735 }
3736
3737 void WebContentsImpl::DidStopLoading() {
3738   scoped_ptr<LoadNotificationDetails> details;
3739
3740   // Use the last committed entry rather than the active one, in case a
3741   // pending entry has been created.
3742   NavigationEntry* entry = controller_.GetLastCommittedEntry();
3743   Navigator* navigator = frame_tree_.root()->navigator();
3744
3745   // An entry may not exist for a stop when loading an initial blank page or
3746   // if an iframe injected by script into a blank page finishes loading.
3747   if (entry) {
3748     base::TimeDelta elapsed =
3749         base::TimeTicks::Now() - navigator->GetCurrentLoadStart();
3750
3751     details.reset(new LoadNotificationDetails(
3752         entry->GetVirtualURL(),
3753         entry->GetTransitionType(),
3754         elapsed,
3755         &controller_,
3756         controller_.GetCurrentEntryIndex()));
3757   }
3758
3759   SetIsLoading(false, true, details.get());
3760 }
3761
3762 void WebContentsImpl::DidChangeLoadProgress() {
3763   double load_progress = frame_tree_.load_progress();
3764
3765   // The delegate is notified immediately for the first and last updates. Also,
3766   // since the message loop may be pretty busy when a page is loaded, it might
3767   // not execute a posted task in a timely manner so the progress report is sent
3768   // immediately if enough time has passed.
3769   base::TimeDelta min_delay =
3770       base::TimeDelta::FromMilliseconds(kMinimumDelayBetweenLoadingUpdatesMS);
3771   bool delay_elapsed = loading_last_progress_update_.is_null() ||
3772       base::TimeTicks::Now() - loading_last_progress_update_ > min_delay;
3773
3774   if (load_progress == 0.0 || load_progress == 1.0 || delay_elapsed) {
3775     // If there is a pending task to send progress, it is now obsolete.
3776     loading_weak_factory_.InvalidateWeakPtrs();
3777
3778     // Notify the load progress change.
3779     SendChangeLoadProgress();
3780
3781     // Clean-up the states if needed.
3782     if (load_progress == 1.0)
3783       ResetLoadProgressState();
3784     return;
3785   }
3786
3787   if (loading_weak_factory_.HasWeakPtrs())
3788     return;
3789
3790   base::MessageLoop::current()->PostDelayedTask(
3791       FROM_HERE,
3792       base::Bind(&WebContentsImpl::SendChangeLoadProgress,
3793                  loading_weak_factory_.GetWeakPtr()),
3794       min_delay);
3795 }
3796
3797 void WebContentsImpl::DidCancelLoading() {
3798   controller_.DiscardNonCommittedEntries();
3799
3800   // Update the URL display.
3801   NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
3802 }
3803
3804 void WebContentsImpl::DidAccessInitialDocument() {
3805   has_accessed_initial_document_ = true;
3806
3807   // We may have left a failed browser-initiated navigation in the address bar
3808   // to let the user edit it and try again.  Clear it now that content might
3809   // show up underneath it.
3810   if (!IsLoading() && controller_.GetPendingEntry())
3811     controller_.DiscardPendingEntry(false);
3812
3813   // Update the URL display.
3814   NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
3815 }
3816
3817 void WebContentsImpl::DidChangeName(RenderFrameHost* render_frame_host,
3818                                     const std::string& name) {
3819   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3820                     FrameNameChanged(render_frame_host, name));
3821 }
3822
3823 void WebContentsImpl::DidDisownOpener(RenderFrameHost* render_frame_host) {
3824   // No action is necessary if the opener has already been cleared.
3825   if (!opener_)
3826     return;
3827
3828   // Clear our opener so that future cross-process navigations don't have an
3829   // opener assigned.
3830   RemoveDestructionObserver(opener_);
3831   opener_ = NULL;
3832
3833   // Notify all swapped out RenderViewHosts for this tab.  This is important
3834   // in case we go back to them, or if another window in those processes tries
3835   // to access window.opener.
3836   GetRenderManager()->DidDisownOpener(render_frame_host);
3837 }
3838
3839 void WebContentsImpl::DocumentOnLoadCompleted(
3840     RenderFrameHost* render_frame_host) {
3841   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3842                     DocumentOnLoadCompletedInMainFrame());
3843
3844   // TODO(avi): Remove. http://crbug.com/170921
3845   NotificationService::current()->Notify(
3846       NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
3847       Source<WebContents>(this),
3848       NotificationService::NoDetails());
3849 }
3850
3851 void WebContentsImpl::UpdateTitle(RenderFrameHost* render_frame_host,
3852                                   int32 page_id,
3853                                   const base::string16& title,
3854                                   base::i18n::TextDirection title_direction) {
3855   RenderViewHost* rvh = render_frame_host->GetRenderViewHost();
3856
3857   // If we have a title, that's a pretty good indication that we've started
3858   // getting useful data.
3859   SetNotWaitingForResponse();
3860
3861   // Try to find the navigation entry, which might not be the current one.
3862   // For example, it might be from a pending RVH for the pending entry.
3863   NavigationEntryImpl* entry = controller_.GetEntryWithPageID(
3864       rvh->GetSiteInstance(), page_id);
3865
3866   // We can handle title updates when we don't have an entry in
3867   // UpdateTitleForEntry, but only if the update is from the current RVH.
3868   // TODO(avi): Change to make decisions based on the RenderFrameHost.
3869   if (!entry && rvh != GetRenderViewHost())
3870     return;
3871
3872   // TODO(evan): make use of title_direction.
3873   // http://code.google.com/p/chromium/issues/detail?id=27094
3874   if (!UpdateTitleForEntry(entry, title))
3875     return;
3876
3877   // Broadcast notifications when the UI should be updated.
3878   if (entry == controller_.GetEntryAtOffset(0))
3879     NotifyNavigationStateChanged(INVALIDATE_TYPE_TITLE);
3880 }
3881
3882 void WebContentsImpl::UpdateEncoding(RenderFrameHost* render_frame_host,
3883                                      const std::string& encoding) {
3884   SetEncoding(encoding);
3885 }
3886
3887 void WebContentsImpl::DocumentAvailableInMainFrame(
3888     RenderViewHost* render_view_host) {
3889   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3890                     DocumentAvailableInMainFrame());
3891 }
3892 void WebContentsImpl::RouteCloseEvent(RenderViewHost* rvh) {
3893   // Tell the active RenderViewHost to run unload handlers and close, as long
3894   // as the request came from a RenderViewHost in the same BrowsingInstance.
3895   // In most cases, we receive this from a swapped out RenderViewHost.
3896   // It is possible to receive it from one that has just been swapped in,
3897   // in which case we might as well deliver the message anyway.
3898   if (rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance()))
3899     GetRenderViewHost()->ClosePage();
3900 }
3901
3902 bool WebContentsImpl::ShouldRouteMessageEvent(
3903     RenderFrameHost* target_rfh,
3904     SiteInstance* source_site_instance) const {
3905   // Allow the message if this WebContents is dedicated to a browser plugin
3906   // guest.
3907   // Note: This check means that an embedder could theoretically receive a
3908   // postMessage from anyone (not just its own guests). However, this is
3909   // probably not a risk for apps since other pages won't have references
3910   // to App windows.
3911   return GetBrowserPluginGuest() || GetBrowserPluginEmbedder();
3912 }
3913
3914 int WebContentsImpl::EnsureOpenerRenderViewsExist(
3915     RenderFrameHost* source_rfh) {
3916   WebContentsImpl* source_web_contents = static_cast<WebContentsImpl*>(
3917       WebContents::FromRenderFrameHost(source_rfh));
3918
3919   if (source_web_contents) {
3920     if (GetBrowserPluginGuest()) {
3921       // We create a swapped out RenderView for the embedder in the guest's
3922       // render process but we intentionally do not expose the embedder's
3923       // opener chain to it.
3924       return
3925           source_web_contents->CreateSwappedOutRenderView(GetSiteInstance());
3926     } else {
3927       return source_web_contents->CreateOpenerRenderViews(GetSiteInstance());
3928     }
3929   }
3930
3931   return MSG_ROUTING_NONE;
3932 }
3933
3934 bool WebContentsImpl::AddMessageToConsole(int32 level,
3935                                           const base::string16& message,
3936                                           int32 line_no,
3937                                           const base::string16& source_id) {
3938   if (!delegate_)
3939     return false;
3940   return delegate_->AddMessageToConsole(this, level, message, line_no,
3941                                         source_id);
3942 }
3943
3944 int WebContentsImpl::CreateSwappedOutRenderView(
3945     SiteInstance* instance) {
3946   int render_view_routing_id = MSG_ROUTING_NONE;
3947   GetRenderManager()->CreateRenderFrame(
3948       instance, nullptr, MSG_ROUTING_NONE,
3949       CREATE_RF_SWAPPED_OUT | CREATE_RF_FOR_MAIN_FRAME_NAVIGATION |
3950           CREATE_RF_HIDDEN,
3951       &render_view_routing_id);
3952   return render_view_routing_id;
3953 }
3954
3955 void WebContentsImpl::OnUserGesture() {
3956   // Notify observers.
3957   FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidGetUserGesture());
3958
3959   ResourceDispatcherHostImpl* rdh = ResourceDispatcherHostImpl::Get();
3960   if (rdh)  // NULL in unittests.
3961     rdh->OnUserGesture(this);
3962 }
3963
3964 void WebContentsImpl::OnIgnoredUIEvent() {
3965   // Notify observers.
3966   FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidGetIgnoredUIEvent());
3967 }
3968
3969 void WebContentsImpl::RendererUnresponsive(RenderViewHost* render_view_host) {
3970   // Don't show hung renderer dialog for a swapped out RVH.
3971   if (render_view_host != GetRenderViewHost())
3972     return;
3973
3974   RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(render_view_host);
3975   RenderFrameHostImpl* rfhi =
3976       static_cast<RenderFrameHostImpl*>(rvhi->GetMainFrame());
3977
3978   // Ignore renderer unresponsive event if debugger is attached to the tab
3979   // since the event may be a result of the renderer sitting on a breakpoint.
3980   // See http://crbug.com/65458
3981   if (DevToolsAgentHost::IsDebuggerAttached(this))
3982     return;
3983
3984   if (rfhi->IsWaitingForBeforeUnloadACK() ||
3985       rfhi->IsWaitingForUnloadACK()) {
3986     // Hang occurred while firing the beforeunload/unload handler.
3987     // Pretend the handler fired so tab closing continues as if it had.
3988     rvhi->set_sudden_termination_allowed(true);
3989
3990     if (!GetRenderManager()->ShouldCloseTabOnUnresponsiveRenderer())
3991       return;
3992
3993     // If the tab hangs in the beforeunload/unload handler there's really
3994     // nothing we can do to recover. If the hang is in the beforeunload handler,
3995     // pretend the beforeunload listeners have all fired and allow the delegate
3996     // to continue closing; the user will not have the option of cancelling the
3997     // close. Otherwise, pretend the unload listeners have all fired and close
3998     // the tab.
3999     bool close = true;
4000     if (rfhi->IsWaitingForBeforeUnloadACK() && delegate_) {
4001       delegate_->BeforeUnloadFired(this, true, &close);
4002     }
4003     if (close)
4004       Close(rvhi);
4005     return;
4006   }
4007
4008   if (!GetRenderViewHost() || !GetRenderViewHost()->IsRenderViewLive())
4009     return;
4010
4011   if (delegate_)
4012     delegate_->RendererUnresponsive(this);
4013 }
4014
4015 void WebContentsImpl::RendererResponsive(RenderViewHost* render_view_host) {
4016   if (delegate_)
4017     delegate_->RendererResponsive(this);
4018 }
4019
4020 void WebContentsImpl::LoadStateChanged(
4021     const GURL& url,
4022     const net::LoadStateWithParam& load_state,
4023     uint64 upload_position,
4024     uint64 upload_size) {
4025   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
4026   // is fixed.
4027   tracked_objects::ScopedTracker tracking_profile1(
4028       FROM_HERE_WITH_EXPLICIT_FUNCTION(
4029           "466285 WebContentsImpl::LoadStateChanged::Start"));
4030   load_state_ = load_state;
4031   upload_position_ = upload_position;
4032   upload_size_ = upload_size;
4033   load_state_host_ = net::IDNToUnicode(url.host(),
4034       GetContentClient()->browser()->GetAcceptLangs(
4035           GetBrowserContext()));
4036   if (load_state_.state == net::LOAD_STATE_READING_RESPONSE)
4037     SetNotWaitingForResponse();
4038   if (IsLoading()) {
4039     NotifyNavigationStateChanged(static_cast<InvalidateTypes>(
4040         INVALIDATE_TYPE_LOAD | INVALIDATE_TYPE_TAB));
4041   }
4042 }
4043
4044 void WebContentsImpl::BeforeUnloadFiredFromRenderManager(
4045     bool proceed, const base::TimeTicks& proceed_time,
4046     bool* proceed_to_fire_unload) {
4047   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
4048                     BeforeUnloadFired(proceed_time));
4049   if (delegate_)
4050     delegate_->BeforeUnloadFired(this, proceed, proceed_to_fire_unload);
4051   // Note: |this| might be deleted at this point.
4052 }
4053
4054 void WebContentsImpl::RenderProcessGoneFromRenderManager(
4055     RenderViewHost* render_view_host) {
4056   DCHECK(crashed_status_ != base::TERMINATION_STATUS_STILL_RUNNING);
4057   RenderViewTerminated(render_view_host, crashed_status_, crashed_error_code_);
4058 }
4059
4060 void WebContentsImpl::UpdateRenderViewSizeForRenderManager() {
4061   // TODO(brettw) this is a hack. See WebContentsView::SizeContents.
4062   gfx::Size size = GetSizeForNewRenderView();
4063   // 0x0 isn't a valid window size (minimal window size is 1x1) but it may be
4064   // here during container initialization and normal window size will be set
4065   // later. In case of tab duplication this resizing to 0x0 prevents setting
4066   // normal size later so just ignore it.
4067   if (!size.IsEmpty())
4068     view_->SizeContents(size);
4069 }
4070
4071 void WebContentsImpl::CancelModalDialogsForRenderManager() {
4072   // We need to cancel modal dialogs when doing a process swap, since the load
4073   // deferrer would prevent us from swapping out. We also clear the state
4074   // because this is a cross-process navigation, which means that it's a new
4075   // site that should not have to pay for the sins of its predecessor.
4076   if (dialog_manager_)
4077     dialog_manager_->ResetDialogState(this);
4078 }
4079
4080 void WebContentsImpl::NotifySwappedFromRenderManager(RenderFrameHost* old_host,
4081                                                      RenderFrameHost* new_host,
4082                                                      bool is_main_frame) {
4083   if (is_main_frame) {
4084     NotifyViewSwapped(old_host ? old_host->GetRenderViewHost() : nullptr,
4085                       new_host->GetRenderViewHost());
4086
4087     // Make sure the visible RVH reflects the new delegate's preferences.
4088     if (delegate_)
4089       view_->SetOverscrollControllerEnabled(CanOverscrollContent());
4090
4091     view_->RenderViewSwappedIn(new_host->GetRenderViewHost());
4092   }
4093
4094   NotifyFrameSwapped(old_host, new_host);
4095 }
4096
4097 void WebContentsImpl::NotifyMainFrameSwappedFromRenderManager(
4098     RenderViewHost* old_host,
4099     RenderViewHost* new_host) {
4100   NotifyViewSwapped(old_host, new_host);
4101 }
4102
4103 int WebContentsImpl::CreateOpenerRenderViewsForRenderManager(
4104     SiteInstance* instance) {
4105   if (!opener_)
4106     return MSG_ROUTING_NONE;
4107
4108   // Recursively create RenderViews for anything else in the opener chain.
4109   return opener_->CreateOpenerRenderViews(instance);
4110 }
4111
4112 int WebContentsImpl::CreateOpenerRenderViews(SiteInstance* instance) {
4113   int opener_route_id = MSG_ROUTING_NONE;
4114
4115   // If this tab has an opener, ensure it has a RenderView in the given
4116   // SiteInstance as well.
4117   if (opener_)
4118     opener_route_id = opener_->CreateOpenerRenderViews(instance);
4119
4120   // If any of the renderers (current, pending, or swapped out) for this
4121   // WebContents has the same SiteInstance, use it.
4122   if (GetRenderManager()->current_host()->GetSiteInstance() == instance)
4123     return GetRenderManager()->current_host()->GetRoutingID();
4124
4125   if (GetRenderManager()->pending_render_view_host() &&
4126       GetRenderManager()->pending_render_view_host()->GetSiteInstance() ==
4127           instance)
4128     return GetRenderManager()->pending_render_view_host()->GetRoutingID();
4129
4130   RenderViewHostImpl* rvh = GetRenderManager()->GetSwappedOutRenderViewHost(
4131       instance);
4132   if (rvh)
4133     return rvh->GetRoutingID();
4134
4135   // Create a swapped out RenderView in the given SiteInstance if none exists,
4136   // setting its opener to the given route_id.  Return the new view's route_id.
4137   int render_view_routing_id = MSG_ROUTING_NONE;
4138   GetRenderManager()->CreateRenderFrame(instance, nullptr, opener_route_id,
4139                                         CREATE_RF_FOR_MAIN_FRAME_NAVIGATION |
4140                                             CREATE_RF_SWAPPED_OUT |
4141                                             CREATE_RF_HIDDEN,
4142                                         &render_view_routing_id);
4143   return render_view_routing_id;
4144 }
4145
4146 NavigationControllerImpl& WebContentsImpl::GetControllerForRenderManager() {
4147   return GetController();
4148 }
4149
4150 scoped_ptr<WebUIImpl> WebContentsImpl::CreateWebUIForRenderManager(
4151     const GURL& url) {
4152   return scoped_ptr<WebUIImpl>(static_cast<WebUIImpl*>(CreateWebUI(url)));
4153 }
4154
4155 NavigationEntry*
4156     WebContentsImpl::GetLastCommittedNavigationEntryForRenderManager() {
4157   return controller_.GetLastCommittedEntry();
4158 }
4159
4160 bool WebContentsImpl::CreateRenderViewForRenderManager(
4161     RenderViewHost* render_view_host,
4162     int opener_route_id,
4163     int proxy_routing_id,
4164     bool for_main_frame_navigation) {
4165   TRACE_EVENT0("browser,navigation",
4166                "WebContentsImpl::CreateRenderViewForRenderManager");
4167   // Can be NULL during tests.
4168   RenderWidgetHostViewBase* rwh_view;
4169   // TODO(kenrb): RenderWidgetHostViewChildFrame special casing is temporary
4170   // until RenderWidgetHost is attached to RenderFrameHost. We need to special
4171   // case this because RWH is still a base class of RenderViewHost, and child
4172   // frame RWHVs are unique in that they do not have their own WebContents.
4173   if (!for_main_frame_navigation) {
4174     RenderWidgetHostViewChildFrame* rwh_view_child =
4175         new RenderWidgetHostViewChildFrame(render_view_host);
4176     rwh_view = rwh_view_child;
4177   } else {
4178     rwh_view = view_->CreateViewForWidget(render_view_host, false);
4179   }
4180
4181   // Now that the RenderView has been created, we need to tell it its size.
4182   if (rwh_view)
4183     rwh_view->SetSize(GetSizeForNewRenderView());
4184
4185   // Make sure we use the correct starting page_id in the new RenderView.
4186   UpdateMaxPageIDIfNecessary(render_view_host);
4187   int32 max_page_id =
4188       GetMaxPageIDForSiteInstance(render_view_host->GetSiteInstance());
4189
4190   if (!static_cast<RenderViewHostImpl*>(
4191           render_view_host)->CreateRenderView(base::string16(),
4192                                               opener_route_id,
4193                                               proxy_routing_id,
4194                                               max_page_id,
4195                                               created_with_opener_)) {
4196     return false;
4197   }
4198
4199   SetHistoryOffsetAndLengthForView(render_view_host,
4200                                    controller_.GetLastCommittedEntryIndex(),
4201                                    controller_.GetEntryCount());
4202
4203 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
4204   // Force a ViewMsg_Resize to be sent, needed to make plugins show up on
4205   // linux. See crbug.com/83941.
4206   if (rwh_view) {
4207     if (RenderWidgetHost* render_widget_host = rwh_view->GetRenderWidgetHost())
4208       render_widget_host->WasResized();
4209   }
4210 #endif
4211
4212   return true;
4213 }
4214
4215 bool WebContentsImpl::CreateRenderFrameForRenderManager(
4216     RenderFrameHost* render_frame_host,
4217     int parent_routing_id,
4218     int proxy_routing_id) {
4219   TRACE_EVENT0("browser,navigation",
4220                "WebContentsImpl::CreateRenderFrameForRenderManager");
4221
4222   RenderFrameHostImpl* rfh =
4223       static_cast<RenderFrameHostImpl*>(render_frame_host);
4224   if (!rfh->CreateRenderFrame(parent_routing_id, proxy_routing_id))
4225     return false;
4226
4227   // TODO(nasko): When RenderWidgetHost is owned by RenderFrameHost, the passed
4228   // RenderFrameHost will have to be associated with the appropriate
4229   // RenderWidgetHostView or a new one should be created here.
4230
4231   return true;
4232 }
4233
4234 #if defined(OS_ANDROID)
4235
4236 base::android::ScopedJavaLocalRef<jobject>
4237 WebContentsImpl::GetJavaWebContents() {
4238   DCHECK_CURRENTLY_ON(BrowserThread::UI);
4239   return GetWebContentsAndroid()->GetJavaObject();
4240 }
4241
4242 WebContentsAndroid* WebContentsImpl::GetWebContentsAndroid() {
4243   WebContentsAndroid* web_contents_android =
4244       static_cast<WebContentsAndroid*>(GetUserData(kWebContentsAndroidKey));
4245   if (!web_contents_android) {
4246     web_contents_android = new WebContentsAndroid(this);
4247     SetUserData(kWebContentsAndroidKey, web_contents_android);
4248   }
4249   return web_contents_android;
4250 }
4251
4252 bool WebContentsImpl::CreateRenderViewForInitialEmptyDocument() {
4253   return CreateRenderViewForRenderManager(GetRenderViewHost(),
4254                                           MSG_ROUTING_NONE,
4255                                           MSG_ROUTING_NONE,
4256                                           true);
4257 }
4258
4259 #elif defined(OS_MACOSX)
4260
4261 void WebContentsImpl::SetAllowOtherViews(bool allow) {
4262   view_->SetAllowOtherViews(allow);
4263 }
4264
4265 bool WebContentsImpl::GetAllowOtherViews() {
4266   return view_->GetAllowOtherViews();
4267 }
4268
4269 #endif
4270
4271 void WebContentsImpl::OnDialogClosed(int render_process_id,
4272                                      int render_frame_id,
4273                                      IPC::Message* reply_msg,
4274                                      bool dialog_was_suppressed,
4275                                      bool success,
4276                                      const base::string16& user_input) {
4277   RenderFrameHostImpl* rfh = RenderFrameHostImpl::FromID(render_process_id,
4278                                                          render_frame_id);
4279   last_dialog_suppressed_ = dialog_was_suppressed;
4280
4281   if (is_showing_before_unload_dialog_ && !success) {
4282     // If a beforeunload dialog is canceled, we need to stop the throbber from
4283     // spinning, since we forced it to start spinning in Navigate.
4284     if (rfh)
4285       DidStopLoading();
4286     controller_.DiscardNonCommittedEntries();
4287
4288     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
4289                       BeforeUnloadDialogCancelled());
4290   }
4291
4292   is_showing_before_unload_dialog_ = false;
4293   if (rfh) {
4294     rfh->JavaScriptDialogClosed(reply_msg, success, user_input,
4295                                 dialog_was_suppressed);
4296   } else {
4297     // Don't leak the sync IPC reply if the RFH or process is gone.
4298     delete reply_msg;
4299   }
4300 }
4301
4302 void WebContentsImpl::SetEncoding(const std::string& encoding) {
4303   if (encoding == last_reported_encoding_)
4304     return;
4305   last_reported_encoding_ = encoding;
4306
4307   canonical_encoding_ = GetContentClient()->browser()->
4308       GetCanonicalEncodingNameByAliasName(encoding);
4309 }
4310
4311 bool WebContentsImpl::IsHidden() {
4312   return capturer_count_ == 0 && !should_normally_be_visible_;
4313 }
4314
4315 RenderFrameHostManager* WebContentsImpl::GetRenderManager() const {
4316   return frame_tree_.root()->render_manager();
4317 }
4318
4319 BrowserPluginGuest* WebContentsImpl::GetBrowserPluginGuest() const {
4320   return browser_plugin_guest_.get();
4321 }
4322
4323 void WebContentsImpl::SetBrowserPluginGuest(BrowserPluginGuest* guest) {
4324   CHECK(!browser_plugin_guest_);
4325   browser_plugin_guest_.reset(guest);
4326 }
4327
4328 BrowserPluginEmbedder* WebContentsImpl::GetBrowserPluginEmbedder() const {
4329   return browser_plugin_embedder_.get();
4330 }
4331
4332 void WebContentsImpl::CreateBrowserPluginEmbedderIfNecessary() {
4333   if (browser_plugin_embedder_)
4334     return;
4335   browser_plugin_embedder_.reset(BrowserPluginEmbedder::Create(this));
4336 }
4337
4338 void WebContentsImpl::ClearPowerSaveBlockers(
4339     RenderFrameHost* render_frame_host) {
4340   RemoveAllMediaPlayerEntries(render_frame_host, &active_audio_players_);
4341   RemoveAllMediaPlayerEntries(render_frame_host, &active_video_players_);
4342   MaybeReleasePowerSaveBlockers();
4343 }
4344
4345 void WebContentsImpl::ClearAllPowerSaveBlockers() {
4346   active_audio_players_.clear();
4347   active_video_players_.clear();
4348   audio_power_save_blocker_.reset();
4349   video_power_save_blocker_.reset();
4350 }
4351
4352 gfx::Size WebContentsImpl::GetSizeForNewRenderView() {
4353   gfx::Size size;
4354   if (delegate_)
4355     size = delegate_->GetSizeForNewRenderView(this);
4356   if (size.IsEmpty())
4357     size = GetContainerBounds().size();
4358   return size;
4359 }
4360
4361 void WebContentsImpl::OnFrameRemoved(RenderFrameHost* render_frame_host) {
4362   FOR_EACH_OBSERVER(
4363       WebContentsObserver, observers_, FrameDeleted(render_frame_host));
4364 }
4365
4366 void WebContentsImpl::OnPreferredSizeChanged(const gfx::Size& old_size) {
4367   if (!delegate_)
4368     return;
4369   const gfx::Size new_size = GetPreferredSize();
4370   if (new_size != old_size)
4371     delegate_->UpdatePreferredSize(this, new_size);
4372 }
4373
4374 void WebContentsImpl::AddMediaPlayerEntry(int64 player_cookie,
4375                                           ActiveMediaPlayerMap* player_map) {
4376   if (!HasValidFrameSource())
4377     return;
4378
4379   const uintptr_t key =
4380       reinterpret_cast<uintptr_t>(render_frame_message_source_);
4381   DCHECK(std::find((*player_map)[key].begin(),
4382                    (*player_map)[key].end(),
4383                    player_cookie) == (*player_map)[key].end());
4384   (*player_map)[key].push_back(player_cookie);
4385 }
4386
4387 void WebContentsImpl::RemoveMediaPlayerEntry(int64 player_cookie,
4388                                              ActiveMediaPlayerMap* player_map) {
4389   if (!HasValidFrameSource())
4390     return;
4391
4392   const uintptr_t key =
4393       reinterpret_cast<uintptr_t>(render_frame_message_source_);
4394   ActiveMediaPlayerMap::iterator it = player_map->find(key);
4395   if (it == player_map->end())
4396     return;
4397
4398   // Remove the player.
4399   PlayerList::iterator player_it =
4400       std::find(it->second.begin(), it->second.end(), player_cookie);
4401   if (player_it != it->second.end())
4402     it->second.erase(player_it);
4403
4404   // If there are no players left, remove the map entry.
4405   if (it->second.empty())
4406     player_map->erase(it);
4407 }
4408
4409 void WebContentsImpl::RemoveAllMediaPlayerEntries(
4410     RenderFrameHost* render_frame_host,
4411     ActiveMediaPlayerMap* player_map) {
4412   ActiveMediaPlayerMap::iterator it =
4413       player_map->find(reinterpret_cast<uintptr_t>(render_frame_host));
4414   if (it == player_map->end())
4415     return;
4416   player_map->erase(it);
4417 }
4418
4419 void WebContentsImpl::ResumeResponseDeferredAtStart() {
4420   FrameTreeNode* node = frame_tree_.root();
4421   node->render_manager()->ResumeResponseDeferredAtStart();
4422 }
4423
4424 void WebContentsImpl::SetForceDisableOverscrollContent(bool force_disable) {
4425   force_disable_overscroll_content_ = force_disable;
4426   if (view_)
4427     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
4428 }
4429
4430 }  // namespace content