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/debug/trace_event.h"
  11 #include "base/lazy_instance.h"
  12 #include "base/logging.h"
  13 #include "base/metrics/histogram.h"
  14 #include "base/metrics/stats_counters.h"
  15 #include "base/process/process.h"
  16 #include "base/strings/string16.h"
  17 #include "base/strings/string_number_conversions.h"
  18 #include "base/strings/string_util.h"
  19 #include "base/strings/utf_string_conversions.h"
  20 #include "base/time/time.h"
  21 #include "content/browser/accessibility/accessibility_mode_helper.h"
  22 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
  23 #include "content/browser/browser_plugin/browser_plugin_embedder.h"
  24 #include "content/browser/browser_plugin/browser_plugin_guest.h"
  25 #include "content/browser/child_process_security_policy_impl.h"
  26 #include "content/browser/devtools/devtools_manager.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/media/midi_dispatcher_host.h"
  45 #include "content/browser/message_port_message_filter.h"
  46 #include "content/browser/message_port_service.h"
  47 #include "content/browser/plugin_content_origin_whitelist.h"
  48 #include "content/browser/power_save_blocker_impl.h"
  49 #include "content/browser/renderer_host/render_process_host_impl.h"
  50 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  51 #include "content/browser/renderer_host/render_view_host_impl.h"
  52 #include "content/browser/renderer_host/render_widget_host_impl.h"
  53 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  54 #include "content/browser/screen_orientation/screen_orientation_dispatcher_host_impl.h"
  55 #include "content/browser/site_instance_impl.h"
  56 #include "content/browser/web_contents/web_contents_view_guest.h"
  57 #include "content/browser/webui/generic_handler.h"
  58 #include "content/browser/webui/web_ui_controller_factory_registry.h"
  59 #include "content/browser/webui/web_ui_impl.h"
  60 #include "content/common/browser_plugin/browser_plugin_constants.h"
  61 #include "content/common/browser_plugin/browser_plugin_messages.h"
  62 #include "content/common/frame_messages.h"
  63 #include "content/common/image_messages.h"
  64 #include "content/common/input_messages.h"
  65 #include "content/common/ssl_status_serialization.h"
  66 #include "content/common/view_messages.h"
  67 #include "content/public/browser/ax_event_notification_details.h"
  68 #include "content/public/browser/browser_context.h"
  69 #include "content/public/browser/browser_plugin_guest_manager.h"
  70 #include "content/public/browser/content_browser_client.h"
  71 #include "content/public/browser/devtools_agent_host.h"
  72 #include "content/public/browser/download_manager.h"
  73 #include "content/public/browser/download_url_parameters.h"
  74 #include "content/public/browser/invalidate_type.h"
  75 #include "content/public/browser/javascript_dialog_manager.h"
  76 #include "content/public/browser/load_from_memory_cache_details.h"
  77 #include "content/public/browser/load_notification_details.h"
  78 #include "content/public/browser/navigation_details.h"
  79 #include "content/public/browser/notification_details.h"
  80 #include "content/public/browser/notification_service.h"
  81 #include "content/public/browser/render_widget_host_iterator.h"
  82 #include "content/public/browser/resource_request_details.h"
  83 #include "content/public/browser/screen_orientation_dispatcher_host.h"
  84 #include "content/public/browser/storage_partition.h"
  85 #include "content/public/browser/user_metrics.h"
  86 #include "content/public/browser/web_contents_delegate.h"
  87 #include "content/public/browser/web_contents_observer.h"
  88 #include "content/public/common/bindings_policy.h"
  89 #include "content/public/common/content_constants.h"
  90 #include "content/public/common/content_switches.h"
  91 #include "content/public/common/page_zoom.h"
  92 #include "content/public/common/result_codes.h"
  93 #include "content/public/common/url_constants.h"
  94 #include "content/public/common/url_utils.h"
  95 #include "content/public/common/web_preferences.h"
  96 #include "net/base/mime_util.h"
  97 #include "net/base/net_util.h"
  98 #include "net/http/http_cache.h"
  99 #include "net/http/http_transaction_factory.h"
 100 #include "net/url_request/url_request_context.h"
 101 #include "net/url_request/url_request_context_getter.h"
 102 #include "ui/base/layout.h"
 103 #include "ui/gfx/display.h"
 104 #include "ui/gfx/screen.h"
 105 #include "ui/gl/gl_switches.h"
 106
 107 #if defined(OS_ANDROID)
 108 #include "content/browser/android/date_time_chooser_android.h"
 109 #include "content/browser/media/android/browser_media_player_manager.h"
 110 #include "content/browser/web_contents/web_contents_android.h"
 111 #endif
 112
 113 #if defined(OS_MACOSX)
 114 #include "base/mac/foundation_util.h"
 115 #endif
 116
 117 namespace content {
 118 namespace {
 119
 120 const int kMinimumDelayBetweenLoadingUpdatesMS = 100;
 121
 122 // This matches what Blink's ProgressTracker has traditionally used for a
 123 // minimum progress value.
 124 const double kMinimumLoadingProgress = 0.1;
 125
 126 const char kDotGoogleDotCom[] = ".google.com";
 127
 128 #if defined(OS_ANDROID)
 129 const char kWebContentsAndroidKey[] = "web_contents_android";
 130 #endif  // OS_ANDROID
 131
 132 base::LazyInstance<std::vector<WebContentsImpl::CreatedCallback> >
 133 g_created_callbacks = LAZY_INSTANCE_INITIALIZER;
 134
 135 static int StartDownload(RenderFrameHost* rfh,
 136                          const GURL& url,
 137                          bool is_favicon,
 138                          uint32_t max_bitmap_size) {
 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   return g_next_image_download_id;
 146 }
 147
 148 void NotifyCacheOnIO(
 149     scoped_refptr<net::URLRequestContextGetter> request_context,
 150     const GURL& url,
 151     const std::string& http_method) {
 152   request_context->GetURLRequestContext()->http_transaction_factory()->
 153       GetCache()->OnExternalCacheHit(url, http_method);
 154 }
 155
 156 // Helper function for retrieving all the sites in a frame tree.
 157 bool CollectSites(BrowserContext* context,
 158                   std::set<GURL>* sites,
 159                   FrameTreeNode* node) {
 160   sites->insert(SiteInstance::GetSiteForURL(context, node->current_url()));
 161   return true;
 162 }
 163
 164 bool ForEachFrameInternal(
 165     const base::Callback<void(RenderFrameHost*)>& on_frame,
 166     FrameTreeNode* node) {
 167   on_frame.Run(node->current_frame_host());
 168   return true;
 169 }
 170
 171 bool ForEachPendingFrameInternal(
 172     const base::Callback<void(RenderFrameHost*)>& on_frame,
 173     FrameTreeNode* node) {
 174   RenderFrameHost* pending_frame_host =
 175       node->render_manager()->pending_frame_host();
 176   if (pending_frame_host)
 177     on_frame.Run(pending_frame_host);
 178   return true;
 179 }
 180
 181 void SendToAllFramesInternal(IPC::Message* message, RenderFrameHost* rfh) {
 182   IPC::Message* message_copy = new IPC::Message(*message);
 183   message_copy->set_routing_id(rfh->GetRoutingID());
 184   rfh->Send(message_copy);
 185 }
 186
 187 void AddRenderWidgetHostViewToSet(std::set<RenderWidgetHostView*>* set,
 188                                   RenderFrameHost* rfh) {
 189   RenderWidgetHostView* rwhv = static_cast<RenderFrameHostImpl*>(rfh)
 190                                    ->frame_tree_node()
 191                                    ->render_manager()
 192                                    ->GetRenderWidgetHostView();
 193   set->insert(rwhv);
 194 }
 195
 196 void SetAccessibilityModeOnFrame(AccessibilityMode mode,
 197                                  RenderFrameHost* frame_host) {
 198   static_cast<RenderFrameHostImpl*>(frame_host)->SetAccessibilityMode(mode);
 199 }
 200
 201 }  // namespace
 202
 203 WebContents* WebContents::Create(const WebContents::CreateParams& params) {
 204   return WebContentsImpl::CreateWithOpener(
 205       params, static_cast<WebContentsImpl*>(params.opener));
 206 }
 207
 208 WebContents* WebContents::CreateWithSessionStorage(
 209     const WebContents::CreateParams& params,
 210     const SessionStorageNamespaceMap& session_storage_namespace_map) {
 211   WebContentsImpl* new_contents = new WebContentsImpl(
 212       params.browser_context, NULL);
 213
 214   for (SessionStorageNamespaceMap::const_iterator it =
 215            session_storage_namespace_map.begin();
 216        it != session_storage_namespace_map.end();
 217        ++it) {
 218     new_contents->GetController()
 219         .SetSessionStorageNamespace(it->first, it->second.get());
 220   }
 221
 222   new_contents->Init(params);
 223   return new_contents;
 224 }
 225
 226 void WebContentsImpl::AddCreatedCallback(const CreatedCallback& callback) {
 227   g_created_callbacks.Get().push_back(callback);
 228 }
 229
 230 void WebContentsImpl::RemoveCreatedCallback(const CreatedCallback& callback) {
 231   for (size_t i = 0; i < g_created_callbacks.Get().size(); ++i) {
 232     if (g_created_callbacks.Get().at(i).Equals(callback)) {
 233       g_created_callbacks.Get().erase(g_created_callbacks.Get().begin() + i);
 234       return;
 235     }
 236   }
 237 }
 238
 239 WebContents* WebContents::FromRenderViewHost(const RenderViewHost* rvh) {
 240   return rvh->GetDelegate()->GetAsWebContents();
 241 }
 242
 243 WebContents* WebContents::FromRenderFrameHost(RenderFrameHost* rfh) {
 244   RenderFrameHostImpl* rfh_impl = static_cast<RenderFrameHostImpl*>(rfh);
 245   if (!rfh_impl)
 246     return NULL;
 247   return rfh_impl->delegate()->GetAsWebContents();
 248 }
 249
 250 // WebContentsImpl::DestructionObserver ----------------------------------------
 251
 252 class WebContentsImpl::DestructionObserver : public WebContentsObserver {
 253  public:
 254   DestructionObserver(WebContentsImpl* owner, WebContents* watched_contents)
 255       : WebContentsObserver(watched_contents),
 256         owner_(owner) {
 257   }
 258
 259   // WebContentsObserver:
 260   void WebContentsDestroyed() override {
 261     owner_->OnWebContentsDestroyed(
 262         static_cast<WebContentsImpl*>(web_contents()));
 263   }
 264
 265  private:
 266   WebContentsImpl* owner_;
 267
 268   DISALLOW_COPY_AND_ASSIGN(DestructionObserver);
 269 };
 270
 271 WebContentsImpl::ColorChooserInfo::ColorChooserInfo(int render_process_id,
 272                                                     int render_frame_id,
 273                                                     ColorChooser* chooser,
 274                                                     int identifier)
 275     : render_process_id(render_process_id),
 276       render_frame_id(render_frame_id),
 277       chooser(chooser),
 278       identifier(identifier) {
 279 }
 280
 281 WebContentsImpl::ColorChooserInfo::~ColorChooserInfo() {
 282 }
 283
 284 // WebContentsImpl -------------------------------------------------------------
 285
 286 WebContentsImpl::WebContentsImpl(BrowserContext* browser_context,
 287                                  WebContentsImpl* opener)
 288     : delegate_(NULL),
 289       controller_(this, browser_context),
 290       render_view_host_delegate_view_(NULL),
 291       opener_(opener),
 292       created_with_opener_(!!opener),
 293 #if defined(OS_WIN)
 294       accessible_parent_(NULL),
 295 #endif
 296       frame_tree_(new NavigatorImpl(&controller_, this),
 297                   this,
 298                   this,
 299                   this,
 300                   this),
 301       is_loading_(false),
 302       is_load_to_different_document_(false),
 303       crashed_status_(base::TERMINATION_STATUS_STILL_RUNNING),
 304       crashed_error_code_(0),
 305       waiting_for_response_(false),
 306       load_state_(net::LOAD_STATE_IDLE, base::string16()),
 307       loading_total_progress_(0.0),
 308       loading_frames_in_progress_(0),
 309       upload_size_(0),
 310       upload_position_(0),
 311       displayed_insecure_content_(false),
 312       has_accessed_initial_document_(false),
 313       capturer_count_(0),
 314       should_normally_be_visible_(true),
 315       is_being_destroyed_(false),
 316       notify_disconnection_(false),
 317       dialog_manager_(NULL),
 318       is_showing_before_unload_dialog_(false),
 319       last_active_time_(base::TimeTicks::Now()),
 320       closed_by_user_gesture_(false),
 321       minimum_zoom_percent_(static_cast<int>(kMinimumZoomFactor * 100)),
 322       maximum_zoom_percent_(static_cast<int>(kMaximumZoomFactor * 100)),
 323       totalPinchGestureAmount_(0),
 324       currentPinchZoomStepDelta_(0),
 325       render_view_message_source_(NULL),
 326       fullscreen_widget_routing_id_(MSG_ROUTING_NONE),
 327       fullscreen_widget_had_focus_at_shutdown_(false),
 328       is_subframe_(false),
 329       force_disable_overscroll_content_(false),
 330       last_dialog_suppressed_(false),
 331       geolocation_service_context_(new GeolocationServiceContext()),
 332       accessibility_mode_(
 333           BrowserAccessibilityStateImpl::GetInstance()->accessibility_mode()),
 334       audio_stream_monitor_(this),
 335       loading_weak_factory_(this) {
 336   for (size_t i = 0; i < g_created_callbacks.Get().size(); i++)
 337     g_created_callbacks.Get().at(i).Run(this);
 338   frame_tree_.SetFrameRemoveListener(
 339       base::Bind(&WebContentsImpl::OnFrameRemoved,
 340                  base::Unretained(this)));
 341 }
 342
 343 WebContentsImpl::~WebContentsImpl() {
 344   is_being_destroyed_ = true;
 345
 346   // Delete all RFH pending shutdown, which will lead the corresponding RVH to
 347   // shutdown and be deleted as well.
 348   frame_tree_.ForEach(
 349       base::Bind(&RenderFrameHostManager::ClearRFHsPendingShutdown));
 350
 351   ClearAllPowerSaveBlockers();
 352
 353   for (std::set<RenderWidgetHostImpl*>::iterator iter =
 354            created_widgets_.begin(); iter != created_widgets_.end(); ++iter) {
 355     (*iter)->DetachDelegate();
 356   }
 357   created_widgets_.clear();
 358
 359   // Clear out any JavaScript state.
 360   if (dialog_manager_)
 361     dialog_manager_->WebContentsDestroyed(this);
 362
 363   if (color_chooser_info_.get())
 364     color_chooser_info_->chooser->End();
 365
 366   NotifyDisconnected();
 367
 368   // Notify any observer that have a reference on this WebContents.
 369   NotificationService::current()->Notify(
 370       NOTIFICATION_WEB_CONTENTS_DESTROYED,
 371       Source<WebContents>(this),
 372       NotificationService::NoDetails());
 373
 374   // Destroy all frame tree nodes except for the root; this notifies observers.
 375   frame_tree_.ResetForMainFrameSwap();
 376   GetRenderManager()->ResetProxyHosts();
 377
 378   // Manually call the observer methods for the root frame tree node.
 379   RenderFrameHostManager* root = GetRenderManager();
 380   if (root->pending_frame_host()) {
 381     FOR_EACH_OBSERVER(WebContentsObserver,
 382                       observers_,
 383                       RenderFrameDeleted(root->pending_frame_host()));
 384   }
 385   FOR_EACH_OBSERVER(WebContentsObserver,
 386                     observers_,
 387                     RenderFrameDeleted(root->current_frame_host()));
 388
 389   if (root->pending_render_view_host()) {
 390     FOR_EACH_OBSERVER(WebContentsObserver,
 391                       observers_,
 392                       RenderViewDeleted(root->pending_render_view_host()));
 393   }
 394
 395   FOR_EACH_OBSERVER(WebContentsObserver,
 396                     observers_,
 397                     RenderViewDeleted(root->current_host()));
 398
 399   FOR_EACH_OBSERVER(WebContentsObserver,
 400                     observers_,
 401                     WebContentsDestroyed());
 402
 403   FOR_EACH_OBSERVER(WebContentsObserver,
 404                     observers_,
 405                     ResetWebContents());
 406
 407   SetDelegate(NULL);
 408
 409   STLDeleteContainerPairSecondPointers(destruction_observers_.begin(),
 410                                        destruction_observers_.end());
 411 }
 412
 413 WebContentsImpl* WebContentsImpl::CreateWithOpener(
 414     const WebContents::CreateParams& params,
 415     WebContentsImpl* opener) {
 416   TRACE_EVENT0("browser", "WebContentsImpl::CreateWithOpener");
 417   WebContentsImpl* new_contents = new WebContentsImpl(
 418       params.browser_context, params.opener_suppressed ? NULL : opener);
 419
 420   if (params.guest_delegate) {
 421     // This makes |new_contents| act as a guest.
 422     // For more info, see comment above class BrowserPluginGuest.
 423     BrowserPluginGuest::Create(new_contents, params.guest_delegate);
 424     // We are instantiating a WebContents for browser plugin. Set its subframe
 425     // bit to true.
 426     new_contents->is_subframe_ = true;
 427   }
 428   new_contents->Init(params);
 429   return new_contents;
 430 }
 431
 432 // static
 433 std::vector<WebContentsImpl*> WebContentsImpl::GetAllWebContents() {
 434   std::vector<WebContentsImpl*> result;
 435   scoped_ptr<RenderWidgetHostIterator> widgets(
 436       RenderWidgetHostImpl::GetRenderWidgetHosts());
 437   std::set<WebContentsImpl*> web_contents_set;
 438   while (RenderWidgetHost* rwh = widgets->GetNextHost()) {
 439     if (!rwh->IsRenderView())
 440       continue;
 441     RenderViewHost* rvh = RenderViewHost::From(rwh);
 442     if (!rvh)
 443       continue;
 444     WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
 445     if (!web_contents)
 446       continue;
 447     WebContentsImpl* wci = static_cast<WebContentsImpl*>(web_contents);
 448     if (web_contents_set.find(wci) == web_contents_set.end()) {
 449       web_contents_set.insert(wci);
 450       result.push_back(wci);
 451     }
 452   }
 453   return result;
 454 }
 455
 456 RenderFrameHostManager* WebContentsImpl::GetRenderManagerForTesting() {
 457   return GetRenderManager();
 458 }
 459
 460 bool WebContentsImpl::OnMessageReceived(RenderViewHost* render_view_host,
 461                                         const IPC::Message& message) {
 462   return OnMessageReceived(render_view_host, NULL, message);
 463 }
 464
 465 bool WebContentsImpl::OnMessageReceived(RenderViewHost* render_view_host,
 466                                         RenderFrameHost* render_frame_host,
 467                                         const IPC::Message& message) {
 468   DCHECK(render_view_host || render_frame_host);
 469   if (GetWebUI() &&
 470       static_cast<WebUIImpl*>(GetWebUI())->OnMessageReceived(message)) {
 471     return true;
 472   }
 473
 474   ObserverListBase<WebContentsObserver>::Iterator it(observers_);
 475   WebContentsObserver* observer;
 476   if (render_frame_host) {
 477     while ((observer = it.GetNext()) != NULL)
 478       if (observer->OnMessageReceived(message, render_frame_host))
 479         return true;
 480   } else {
 481     while ((observer = it.GetNext()) != NULL)
 482       if (observer->OnMessageReceived(message))
 483         return true;
 484   }
 485
 486   // Message handlers should be aware of which
 487   // RenderViewHost/RenderFrameHost sent the message, which is temporarily
 488   // stored in render_(view|frame)_message_source_.
 489   if (render_frame_host)
 490     render_frame_message_source_ = render_frame_host;
 491   else
 492     render_view_message_source_ = render_view_host;
 493
 494   bool handled = true;
 495   IPC_BEGIN_MESSAGE_MAP(WebContentsImpl, message)
 496     IPC_MESSAGE_HANDLER(FrameHostMsg_DomOperationResponse,
 497                         OnDomOperationResponse)
 498     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeThemeColor,
 499                         OnThemeColorChanged)
 500     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFinishDocumentLoad,
 501                         OnDocumentLoadedInFrame)
 502     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFinishLoad, OnDidFinishLoad)
 503     IPC_MESSAGE_HANDLER(FrameHostMsg_DidStartLoading, OnDidStartLoading)
 504     IPC_MESSAGE_HANDLER(FrameHostMsg_DidStopLoading, OnDidStopLoading)
 505     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeLoadProgress,
 506                         OnDidChangeLoadProgress)
 507     IPC_MESSAGE_HANDLER(FrameHostMsg_OpenColorChooser, OnOpenColorChooser)
 508     IPC_MESSAGE_HANDLER(FrameHostMsg_EndColorChooser, OnEndColorChooser)
 509     IPC_MESSAGE_HANDLER(FrameHostMsg_SetSelectedColorInColorChooser,
 510                         OnSetSelectedColorInColorChooser)
 511     IPC_MESSAGE_HANDLER(FrameHostMsg_MediaPlayingNotification,
 512                         OnMediaPlayingNotification)
 513     IPC_MESSAGE_HANDLER(FrameHostMsg_MediaPausedNotification,
 514                         OnMediaPausedNotification)
 515     IPC_MESSAGE_HANDLER(FrameHostMsg_DidFirstVisuallyNonEmptyPaint,
 516                         OnFirstVisuallyNonEmptyPaint)
 517     IPC_MESSAGE_HANDLER(ViewHostMsg_DidLoadResourceFromMemoryCache,
 518                         OnDidLoadResourceFromMemoryCache)
 519     IPC_MESSAGE_HANDLER(ViewHostMsg_DidDisplayInsecureContent,
 520                         OnDidDisplayInsecureContent)
 521     IPC_MESSAGE_HANDLER(ViewHostMsg_DidRunInsecureContent,
 522                         OnDidRunInsecureContent)
 523     IPC_MESSAGE_HANDLER(ViewHostMsg_GoToEntryAtOffset, OnGoToEntryAtOffset)
 524     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateZoomLimits, OnUpdateZoomLimits)
 525     IPC_MESSAGE_HANDLER(ViewHostMsg_EnumerateDirectory, OnEnumerateDirectory)
 526     IPC_MESSAGE_HANDLER(ViewHostMsg_RegisterProtocolHandler,
 527                         OnRegisterProtocolHandler)
 528     IPC_MESSAGE_HANDLER(ViewHostMsg_UnregisterProtocolHandler,
 529                         OnUnregisterProtocolHandler)
 530     IPC_MESSAGE_HANDLER(ViewHostMsg_Find_Reply, OnFindReply)
 531     IPC_MESSAGE_HANDLER(ViewHostMsg_AppCacheAccessed, OnAppCacheAccessed)
 532     IPC_MESSAGE_HANDLER(ViewHostMsg_WebUISend, OnWebUISend)
 533 #if defined(ENABLE_PLUGINS)
 534     IPC_MESSAGE_HANDLER(FrameHostMsg_PepperPluginHung, OnPepperPluginHung)
 535     IPC_MESSAGE_HANDLER(FrameHostMsg_PluginCrashed, OnPluginCrashed)
 536     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestPpapiBrokerPermission,
 537                         OnRequestPpapiBrokerPermission)
 538     IPC_MESSAGE_HANDLER_GENERIC(BrowserPluginHostMsg_Attach,
 539                                 OnBrowserPluginMessage(message))
 540 #endif
 541     IPC_MESSAGE_HANDLER(ImageHostMsg_DidDownloadImage, OnDidDownloadImage)
 542     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateFaviconURL, OnUpdateFaviconURL)
 543     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowValidationMessage,
 544                         OnShowValidationMessage)
 545     IPC_MESSAGE_HANDLER(ViewHostMsg_HideValidationMessage,
 546                         OnHideValidationMessage)
 547     IPC_MESSAGE_HANDLER(ViewHostMsg_MoveValidationMessage,
 548                         OnMoveValidationMessage)
 549 #if defined(OS_ANDROID)
 550     IPC_MESSAGE_HANDLER(ViewHostMsg_FindMatchRects_Reply,
 551                         OnFindMatchRectsReply)
 552     IPC_MESSAGE_HANDLER(ViewHostMsg_OpenDateTimeDialog,
 553                         OnOpenDateTimeDialog)
 554 #endif
 555     IPC_MESSAGE_UNHANDLED(handled = false)
 556   IPC_END_MESSAGE_MAP()
 557   render_view_message_source_ = NULL;
 558   render_frame_message_source_ = NULL;
 559
 560   return handled;
 561 }
 562
 563 void WebContentsImpl::RunFileChooser(
 564     RenderViewHost* render_view_host,
 565     const FileChooserParams& params) {
 566   if (delegate_)
 567     delegate_->RunFileChooser(this, params);
 568 }
 569
 570 NavigationControllerImpl& WebContentsImpl::GetController() {
 571   return controller_;
 572 }
 573
 574 const NavigationControllerImpl& WebContentsImpl::GetController() const {
 575   return controller_;
 576 }
 577
 578 BrowserContext* WebContentsImpl::GetBrowserContext() const {
 579   return controller_.GetBrowserContext();
 580 }
 581
 582 const GURL& WebContentsImpl::GetURL() const {
 583   // We may not have a navigation entry yet.
 584   NavigationEntry* entry = controller_.GetVisibleEntry();
 585   return entry ? entry->GetVirtualURL() : GURL::EmptyGURL();
 586 }
 587
 588 const GURL& WebContentsImpl::GetVisibleURL() const {
 589   // We may not have a navigation entry yet.
 590   NavigationEntry* entry = controller_.GetVisibleEntry();
 591   return entry ? entry->GetVirtualURL() : GURL::EmptyGURL();
 592 }
 593
 594 const GURL& WebContentsImpl::GetLastCommittedURL() const {
 595   // We may not have a navigation entry yet.
 596   NavigationEntry* entry = controller_.GetLastCommittedEntry();
 597   return entry ? entry->GetVirtualURL() : GURL::EmptyGURL();
 598 }
 599
 600 WebContentsDelegate* WebContentsImpl::GetDelegate() {
 601   return delegate_;
 602 }
 603
 604 void WebContentsImpl::SetDelegate(WebContentsDelegate* delegate) {
 605   // TODO(cbentzel): remove this debugging code?
 606   if (delegate == delegate_)
 607     return;
 608   if (delegate_)
 609     delegate_->Detach(this);
 610   delegate_ = delegate;
 611   if (delegate_) {
 612     delegate_->Attach(this);
 613     // Ensure the visible RVH reflects the new delegate's preferences.
 614     if (view_)
 615       view_->SetOverscrollControllerEnabled(CanOverscrollContent());
 616   }
 617 }
 618
 619 RenderProcessHost* WebContentsImpl::GetRenderProcessHost() const {
 620   RenderViewHostImpl* host = GetRenderManager()->current_host();
 621   return host ? host->GetProcess() : NULL;
 622 }
 623
 624 RenderFrameHost* WebContentsImpl::GetMainFrame() {
 625   return frame_tree_.root()->current_frame_host();
 626 }
 627
 628 RenderFrameHost* WebContentsImpl::GetFocusedFrame() {
 629   if (!frame_tree_.GetFocusedFrame())
 630     return NULL;
 631   return frame_tree_.GetFocusedFrame()->current_frame_host();
 632 }
 633
 634 void WebContentsImpl::ForEachFrame(
 635     const base::Callback<void(RenderFrameHost*)>& on_frame) {
 636   frame_tree_.ForEach(base::Bind(&ForEachFrameInternal, on_frame));
 637 }
 638
 639 void WebContentsImpl::SendToAllFrames(IPC::Message* message) {
 640   ForEachFrame(base::Bind(&SendToAllFramesInternal, message));
 641   delete message;
 642 }
 643
 644 RenderViewHost* WebContentsImpl::GetRenderViewHost() const {
 645   return GetRenderManager()->current_host();
 646 }
 647
 648 int WebContentsImpl::GetRoutingID() const {
 649   if (!GetRenderViewHost())
 650     return MSG_ROUTING_NONE;
 651
 652   return GetRenderViewHost()->GetRoutingID();
 653 }
 654
 655 int WebContentsImpl::GetFullscreenWidgetRoutingID() const {
 656   return fullscreen_widget_routing_id_;
 657 }
 658
 659 RenderWidgetHostView* WebContentsImpl::GetRenderWidgetHostView() const {
 660   return GetRenderManager()->GetRenderWidgetHostView();
 661 }
 662
 663 RenderWidgetHostView* WebContentsImpl::GetFullscreenRenderWidgetHostView()
 664     const {
 665   RenderWidgetHost* const widget_host =
 666       RenderWidgetHostImpl::FromID(GetRenderProcessHost()->GetID(),
 667                                    GetFullscreenWidgetRoutingID());
 668   return widget_host ? widget_host->GetView() : NULL;
 669 }
 670
 671 WebContentsView* WebContentsImpl::GetView() const {
 672   return view_.get();
 673 }
 674
 675 void WebContentsImpl::SetAccessibilityMode(AccessibilityMode mode) {
 676   if (mode == accessibility_mode_)
 677     return;
 678
 679   accessibility_mode_ = mode;
 680   frame_tree_.ForEach(
 681       base::Bind(&ForEachFrameInternal,
 682                  base::Bind(&SetAccessibilityModeOnFrame, mode)));
 683   frame_tree_.ForEach(
 684       base::Bind(&ForEachPendingFrameInternal,
 685                  base::Bind(&SetAccessibilityModeOnFrame, mode)));
 686 }
 687
 688 void WebContentsImpl::AddAccessibilityMode(AccessibilityMode mode) {
 689   SetAccessibilityMode(AddAccessibilityModeTo(accessibility_mode_, mode));
 690 }
 691
 692 void WebContentsImpl::RemoveAccessibilityMode(AccessibilityMode mode) {
 693   SetAccessibilityMode(RemoveAccessibilityModeFrom(accessibility_mode_, mode));
 694 }
 695
 696 void WebContentsImpl::ClearNavigationTransitionData() {
 697   FrameTreeNode* node = frame_tree_.root();
 698   node->render_manager()->ClearNavigationTransitionData();
 699 }
 700
 701 WebUI* WebContentsImpl::CreateWebUI(const GURL& url) {
 702   WebUIImpl* web_ui = new WebUIImpl(this);
 703   WebUIController* controller = WebUIControllerFactoryRegistry::GetInstance()->
 704       CreateWebUIControllerForURL(web_ui, url);
 705   if (controller) {
 706     web_ui->AddMessageHandler(new GenericHandler());
 707     web_ui->SetController(controller);
 708     return web_ui;
 709   }
 710
 711   delete web_ui;
 712   return NULL;
 713 }
 714
 715 WebUI* WebContentsImpl::GetWebUI() const {
 716   return GetRenderManager()->web_ui() ? GetRenderManager()->web_ui()
 717       : GetRenderManager()->pending_web_ui();
 718 }
 719
 720 WebUI* WebContentsImpl::GetCommittedWebUI() const {
 721   return GetRenderManager()->web_ui();
 722 }
 723
 724 void WebContentsImpl::SetUserAgentOverride(const std::string& override) {
 725   if (GetUserAgentOverride() == override)
 726     return;
 727
 728   renderer_preferences_.user_agent_override = override;
 729
 730   // Send the new override string to the renderer.
 731   RenderViewHost* host = GetRenderViewHost();
 732   if (host)
 733     host->SyncRendererPrefs();
 734
 735   // Reload the page if a load is currently in progress to avoid having
 736   // different parts of the page loaded using different user agents.
 737   NavigationEntry* entry = controller_.GetVisibleEntry();
 738   if (is_loading_ && entry != NULL && entry->GetIsOverridingUserAgent())
 739     controller_.ReloadIgnoringCache(true);
 740
 741   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
 742                     UserAgentOverrideSet(override));
 743 }
 744
 745 const std::string& WebContentsImpl::GetUserAgentOverride() const {
 746   return renderer_preferences_.user_agent_override;
 747 }
 748
 749 void WebContentsImpl::EnableTreeOnlyAccessibilityMode() {
 750   AddAccessibilityMode(AccessibilityModeTreeOnly);
 751 }
 752
 753 bool WebContentsImpl::IsTreeOnlyAccessibilityModeForTesting() const {
 754   return accessibility_mode_ == AccessibilityModeTreeOnly;
 755 }
 756
 757 bool WebContentsImpl::IsFullAccessibilityModeForTesting() const {
 758   return accessibility_mode_ == AccessibilityModeComplete;
 759 }
 760
 761 #if defined(OS_WIN)
 762 void WebContentsImpl::SetParentNativeViewAccessible(
 763 gfx::NativeViewAccessible accessible_parent) {
 764   accessible_parent_ = accessible_parent;
 765   RenderFrameHostImpl* rfh = static_cast<RenderFrameHostImpl*>(GetMainFrame());
 766   if (rfh)
 767     rfh->SetParentNativeViewAccessible(accessible_parent);
 768 }
 769 #endif
 770
 771 const base::string16& WebContentsImpl::GetTitle() const {
 772   // Transient entries take precedence. They are used for interstitial pages
 773   // that are shown on top of existing pages.
 774   NavigationEntry* entry = controller_.GetTransientEntry();
 775   std::string accept_languages =
 776       GetContentClient()->browser()->GetAcceptLangs(
 777           GetBrowserContext());
 778   if (entry) {
 779     return entry->GetTitleForDisplay(accept_languages);
 780   }
 781   WebUI* our_web_ui = GetRenderManager()->pending_web_ui() ?
 782       GetRenderManager()->pending_web_ui() : GetRenderManager()->web_ui();
 783   if (our_web_ui) {
 784     // Don't override the title in view source mode.
 785     entry = controller_.GetVisibleEntry();
 786     if (!(entry && entry->IsViewSourceMode())) {
 787       // Give the Web UI the chance to override our title.
 788       const base::string16& title = our_web_ui->GetOverriddenTitle();
 789       if (!title.empty())
 790         return title;
 791     }
 792   }
 793
 794   // We use the title for the last committed entry rather than a pending
 795   // navigation entry. For example, when the user types in a URL, we want to
 796   // keep the old page's title until the new load has committed and we get a new
 797   // title.
 798   entry = controller_.GetLastCommittedEntry();
 799
 800   // We make an exception for initial navigations.
 801   if (controller_.IsInitialNavigation()) {
 802     // We only want to use the title from the visible entry in one of two cases:
 803     // 1. There's already a committed entry for an initial navigation, in which
 804     //    case we are doing a history navigation in a new tab (e.g., Ctrl+Back).
 805     // 2. The pending entry has been explicitly assigned a title to display.
 806     //
 807     // If there's no last committed entry and no assigned title, we should fall
 808     // back to |page_title_when_no_navigation_entry_| rather than showing the
 809     // URL.
 810     if (entry ||
 811         (controller_.GetVisibleEntry() &&
 812          !controller_.GetVisibleEntry()->GetTitle().empty())) {
 813       entry = controller_.GetVisibleEntry();
 814     }
 815   }
 816
 817   if (entry) {
 818     return entry->GetTitleForDisplay(accept_languages);
 819   }
 820
 821   // |page_title_when_no_navigation_entry_| is finally used
 822   // if no title cannot be retrieved.
 823   return page_title_when_no_navigation_entry_;
 824 }
 825
 826 int32 WebContentsImpl::GetMaxPageID() {
 827   return GetMaxPageIDForSiteInstance(GetSiteInstance());
 828 }
 829
 830 int32 WebContentsImpl::GetMaxPageIDForSiteInstance(
 831     SiteInstance* site_instance) {
 832   if (max_page_ids_.find(site_instance->GetId()) == max_page_ids_.end())
 833     max_page_ids_[site_instance->GetId()] = -1;
 834
 835   return max_page_ids_[site_instance->GetId()];
 836 }
 837
 838 void WebContentsImpl::UpdateMaxPageID(int32 page_id) {
 839   UpdateMaxPageIDForSiteInstance(GetSiteInstance(), page_id);
 840 }
 841
 842 void WebContentsImpl::UpdateMaxPageIDForSiteInstance(
 843     SiteInstance* site_instance, int32 page_id) {
 844   if (GetMaxPageIDForSiteInstance(site_instance) < page_id)
 845     max_page_ids_[site_instance->GetId()] = page_id;
 846 }
 847
 848 void WebContentsImpl::CopyMaxPageIDsFrom(WebContents* web_contents) {
 849   WebContentsImpl* contents = static_cast<WebContentsImpl*>(web_contents);
 850   max_page_ids_ = contents->max_page_ids_;
 851 }
 852
 853 SiteInstanceImpl* WebContentsImpl::GetSiteInstance() const {
 854   return GetRenderManager()->current_host()->GetSiteInstance();
 855 }
 856
 857 SiteInstanceImpl* WebContentsImpl::GetPendingSiteInstance() const {
 858   RenderViewHostImpl* dest_rvh =
 859       GetRenderManager()->pending_render_view_host() ?
 860           GetRenderManager()->pending_render_view_host() :
 861           GetRenderManager()->current_host();
 862   return dest_rvh->GetSiteInstance();
 863 }
 864
 865 bool WebContentsImpl::IsLoading() const {
 866   return is_loading_;
 867 }
 868
 869 bool WebContentsImpl::IsLoadingToDifferentDocument() const {
 870   return is_loading_ && is_load_to_different_document_;
 871 }
 872
 873 bool WebContentsImpl::IsWaitingForResponse() const {
 874   return waiting_for_response_ && is_load_to_different_document_;
 875 }
 876
 877 const net::LoadStateWithParam& WebContentsImpl::GetLoadState() const {
 878   return load_state_;
 879 }
 880
 881 const base::string16& WebContentsImpl::GetLoadStateHost() const {
 882   return load_state_host_;
 883 }
 884
 885 uint64 WebContentsImpl::GetUploadSize() const {
 886   return upload_size_;
 887 }
 888
 889 uint64 WebContentsImpl::GetUploadPosition() const {
 890   return upload_position_;
 891 }
 892
 893 std::set<GURL> WebContentsImpl::GetSitesInTab() const {
 894   std::set<GURL> sites;
 895   frame_tree_.ForEach(base::Bind(&CollectSites,
 896                                  base::Unretained(GetBrowserContext()),
 897                                  base::Unretained(&sites)));
 898   return sites;
 899 }
 900
 901 const std::string& WebContentsImpl::GetEncoding() const {
 902   return canonical_encoding_;
 903 }
 904
 905 bool WebContentsImpl::DisplayedInsecureContent() const {
 906   return displayed_insecure_content_;
 907 }
 908
 909 void WebContentsImpl::IncrementCapturerCount(const gfx::Size& capture_size) {
 910   DCHECK(!is_being_destroyed_);
 911   ++capturer_count_;
 912   DVLOG(1) << "There are now " << capturer_count_
 913            << " capturing(s) of WebContentsImpl@" << this;
 914
 915   // Note: This provides a hint to upstream code to size the views optimally
 916   // for quality (e.g., to avoid scaling).
 917   if (!capture_size.IsEmpty() && preferred_size_for_capture_.IsEmpty()) {
 918     preferred_size_for_capture_ = capture_size;
 919     OnPreferredSizeChanged(preferred_size_);
 920   }
 921 }
 922
 923 void WebContentsImpl::DecrementCapturerCount() {
 924   --capturer_count_;
 925   DVLOG(1) << "There are now " << capturer_count_
 926            << " capturing(s) of WebContentsImpl@" << this;
 927   DCHECK_LE(0, capturer_count_);
 928
 929   if (is_being_destroyed_)
 930     return;
 931
 932   if (capturer_count_ == 0) {
 933     const gfx::Size old_size = preferred_size_for_capture_;
 934     preferred_size_for_capture_ = gfx::Size();
 935     OnPreferredSizeChanged(old_size);
 936   }
 937
 938   if (IsHidden()) {
 939     DVLOG(1) << "Executing delayed WasHidden().";
 940     WasHidden();
 941   }
 942 }
 943
 944 int WebContentsImpl::GetCapturerCount() const {
 945   return capturer_count_;
 946 }
 947
 948 bool WebContentsImpl::IsAudioMuted() const {
 949   return audio_muter_.get() && audio_muter_->is_muting();
 950 }
 951
 952 void WebContentsImpl::SetAudioMuted(bool mute) {
 953   DVLOG(1) << "SetAudioMuted(mute=" << mute << "), was " << IsAudioMuted()
 954            << " for WebContentsImpl@" << this;
 955
 956   if (mute == IsAudioMuted())
 957     return;
 958
 959   if (mute) {
 960     if (!audio_muter_)
 961       audio_muter_.reset(new WebContentsAudioMuter(this));
 962     audio_muter_->StartMuting();
 963   } else {
 964     DCHECK(audio_muter_);
 965     audio_muter_->StopMuting();
 966   }
 967
 968   // Notification for UI updates in response to the changed muting state.
 969   NotifyNavigationStateChanged(INVALIDATE_TYPE_TAB);
 970 }
 971
 972 bool WebContentsImpl::IsCrashed() const {
 973   return (crashed_status_ == base::TERMINATION_STATUS_PROCESS_CRASHED ||
 974           crashed_status_ == base::TERMINATION_STATUS_ABNORMAL_TERMINATION ||
 975           crashed_status_ == base::TERMINATION_STATUS_PROCESS_WAS_KILLED);
 976 }
 977
 978 void WebContentsImpl::SetIsCrashed(base::TerminationStatus status,
 979                                    int error_code) {
 980   if (status == crashed_status_)
 981     return;
 982
 983   crashed_status_ = status;
 984   crashed_error_code_ = error_code;
 985   NotifyNavigationStateChanged(INVALIDATE_TYPE_TAB);
 986 }
 987
 988 base::TerminationStatus WebContentsImpl::GetCrashedStatus() const {
 989   return crashed_status_;
 990 }
 991
 992 bool WebContentsImpl::IsBeingDestroyed() const {
 993   return is_being_destroyed_;
 994 }
 995
 996 void WebContentsImpl::NotifyNavigationStateChanged(
 997     InvalidateTypes changed_flags) {
 998   // Create and release the audio power save blocker depending on whether the
 999   // tab is actively producing audio or not.
1000   if (changed_flags == INVALIDATE_TYPE_TAB &&
1001       AudioStreamMonitor::monitoring_available()) {
1002     if (WasRecentlyAudible()) {
1003       if (!audio_power_save_blocker_)
1004         CreateAudioPowerSaveBlocker();
1005     } else {
1006       audio_power_save_blocker_.reset();
1007     }
1008   }
1009
1010   if (delegate_)
1011     delegate_->NavigationStateChanged(this, changed_flags);
1012 }
1013
1014 base::TimeTicks WebContentsImpl::GetLastActiveTime() const {
1015   return last_active_time_;
1016 }
1017
1018 void WebContentsImpl::WasShown() {
1019   controller_.SetActive(true);
1020
1021   std::set<RenderWidgetHostView*> widgets = GetRenderWidgetHostViewsInTree();
1022   for (std::set<RenderWidgetHostView*>::iterator iter = widgets.begin();
1023        iter != widgets.end();
1024        iter++) {
1025     if (*iter) {
1026       (*iter)->Show();
1027 #if defined(OS_MACOSX)
1028       (*iter)->SetActive(true);
1029 #endif
1030     }
1031   }
1032
1033   last_active_time_ = base::TimeTicks::Now();
1034
1035   // The resize rect might have changed while this was inactive -- send the new
1036   // one to make sure it's up to date.
1037   RenderViewHostImpl* rvh =
1038       static_cast<RenderViewHostImpl*>(GetRenderViewHost());
1039   if (rvh) {
1040     rvh->ResizeRectChanged(GetRootWindowResizerRect());
1041   }
1042
1043   // Restore power save blocker if there are active video players running.
1044   if (!active_video_players_.empty() && !video_power_save_blocker_)
1045     CreateVideoPowerSaveBlocker();
1046
1047   FOR_EACH_OBSERVER(WebContentsObserver, observers_, WasShown());
1048
1049   should_normally_be_visible_ = true;
1050 }
1051
1052 void WebContentsImpl::WasHidden() {
1053   // If there are entities capturing screenshots or video (e.g., mirroring),
1054   // don't activate the "disable rendering" optimization.
1055   if (capturer_count_ == 0) {
1056     // |GetRenderViewHost()| can be NULL if the user middle clicks a link to
1057     // open a tab in the background, then closes the tab before selecting it.
1058     // This is because closing the tab calls WebContentsImpl::Destroy(), which
1059     // removes the |GetRenderViewHost()|; then when we actually destroy the
1060     // window, OnWindowPosChanged() notices and calls WasHidden() (which
1061     // calls us).
1062     std::set<RenderWidgetHostView*> widgets = GetRenderWidgetHostViewsInTree();
1063     for (std::set<RenderWidgetHostView*>::iterator iter = widgets.begin();
1064          iter != widgets.end();
1065          iter++) {
1066       if (*iter)
1067         (*iter)->Hide();
1068     }
1069
1070     // Release any video power save blockers held as video is not visible.
1071     video_power_save_blocker_.reset();
1072   }
1073
1074   FOR_EACH_OBSERVER(WebContentsObserver, observers_, WasHidden());
1075
1076   should_normally_be_visible_ = false;
1077 }
1078
1079 bool WebContentsImpl::NeedToFireBeforeUnload() {
1080   // TODO(creis): Should we fire even for interstitial pages?
1081   return WillNotifyDisconnection() &&
1082       !ShowingInterstitialPage() &&
1083       !static_cast<RenderViewHostImpl*>(
1084           GetRenderViewHost())->SuddenTerminationAllowed();
1085 }
1086
1087 void WebContentsImpl::DispatchBeforeUnload(bool for_cross_site_transition) {
1088   static_cast<RenderFrameHostImpl*>(GetMainFrame())->DispatchBeforeUnload(
1089       for_cross_site_transition);
1090 }
1091
1092 void WebContentsImpl::Stop() {
1093   GetRenderManager()->Stop();
1094   FOR_EACH_OBSERVER(WebContentsObserver, observers_, NavigationStopped());
1095 }
1096
1097 WebContents* WebContentsImpl::Clone() {
1098   // We use our current SiteInstance since the cloned entry will use it anyway.
1099   // We pass our own opener so that the cloned page can access it if it was
1100   // before.
1101   CreateParams create_params(GetBrowserContext(), GetSiteInstance());
1102   create_params.initial_size = GetContainerBounds().size();
1103   WebContentsImpl* tc = CreateWithOpener(create_params, opener_);
1104   tc->GetController().CopyStateFrom(controller_);
1105   FOR_EACH_OBSERVER(WebContentsObserver,
1106                     observers_,
1107                     DidCloneToNewWebContents(this, tc));
1108   return tc;
1109 }
1110
1111 void WebContentsImpl::Observe(int type,
1112                               const NotificationSource& source,
1113                               const NotificationDetails& details) {
1114   switch (type) {
1115     case NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED: {
1116       RenderWidgetHost* host = Source<RenderWidgetHost>(source).ptr();
1117       RenderWidgetHostView* view = host->GetView();
1118       if (view == GetFullscreenRenderWidgetHostView()) {
1119         // We cannot just call view_->RestoreFocus() here.  On some platforms,
1120         // attempting to focus the currently-invisible WebContentsView will be
1121         // flat-out ignored.  Therefore, this boolean is used to track whether
1122         // we will request focus after the fullscreen widget has been
1123         // destroyed.
1124         fullscreen_widget_had_focus_at_shutdown_ = (view && view->HasFocus());
1125       } else {
1126         for (PendingWidgetViews::iterator i = pending_widget_views_.begin();
1127              i != pending_widget_views_.end(); ++i) {
1128           if (host->GetView() == i->second) {
1129             pending_widget_views_.erase(i);
1130             break;
1131           }
1132         }
1133       }
1134       break;
1135     }
1136     default:
1137       NOTREACHED();
1138   }
1139 }
1140
1141 WebContents* WebContentsImpl::GetWebContents() {
1142   return this;
1143 }
1144
1145 void WebContentsImpl::Init(const WebContents::CreateParams& params) {
1146   // This is set before initializing the render manager since
1147   // RenderFrameHostManager::Init calls back into us via its delegate to ask if
1148   // it should be hidden.
1149   should_normally_be_visible_ = !params.initially_hidden;
1150
1151   GetRenderManager()->Init(
1152       params.browser_context, params.site_instance, params.routing_id,
1153       params.main_frame_routing_id);
1154
1155   WebContentsViewDelegate* delegate =
1156       GetContentClient()->browser()->GetWebContentsViewDelegate(this);
1157
1158   if (browser_plugin_guest_) {
1159     scoped_ptr<WebContentsView> platform_view(CreateWebContentsView(
1160         this, delegate, &render_view_host_delegate_view_));
1161
1162     WebContentsViewGuest* rv = new WebContentsViewGuest(
1163         this, browser_plugin_guest_.get(), platform_view.Pass(),
1164         render_view_host_delegate_view_);
1165     render_view_host_delegate_view_ = rv;
1166     view_.reset(rv);
1167   } else {
1168     // Regular WebContentsView.
1169     view_.reset(CreateWebContentsView(
1170         this, delegate, &render_view_host_delegate_view_));
1171   }
1172   CHECK(render_view_host_delegate_view_);
1173   CHECK(view_.get());
1174
1175   gfx::Size initial_size = params.initial_size;
1176   view_->CreateView(initial_size, params.context);
1177
1178   // Listen for whether our opener gets destroyed.
1179   if (opener_)
1180     AddDestructionObserver(opener_);
1181
1182 #if defined(ENABLE_PLUGINS)
1183   plugin_content_origin_whitelist_.reset(
1184       new PluginContentOriginWhitelist(this));
1185 #endif
1186
1187   registrar_.Add(this,
1188                  NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
1189                  NotificationService::AllBrowserContextsAndSources());
1190
1191   midi_dispatcher_host_.reset(new MidiDispatcherHost(this));
1192
1193   screen_orientation_dispatcher_host_.reset(
1194       new ScreenOrientationDispatcherHostImpl(this));
1195
1196   manifest_manager_host_.reset(new ManifestManagerHost(this));
1197
1198 #if defined(OS_ANDROID)
1199   date_time_chooser_.reset(new DateTimeChooserAndroid());
1200 #endif
1201 }
1202
1203 void WebContentsImpl::OnWebContentsDestroyed(WebContentsImpl* web_contents) {
1204   RemoveDestructionObserver(web_contents);
1205
1206   // Clear the opener if it has been closed.
1207   if (web_contents == opener_) {
1208     opener_ = NULL;
1209     return;
1210   }
1211   // Clear a pending contents that has been closed before being shown.
1212   for (PendingContents::iterator iter = pending_contents_.begin();
1213        iter != pending_contents_.end();
1214        ++iter) {
1215     if (iter->second != web_contents)
1216       continue;
1217     pending_contents_.erase(iter);
1218     return;
1219   }
1220   NOTREACHED();
1221 }
1222
1223 void WebContentsImpl::AddDestructionObserver(WebContentsImpl* web_contents) {
1224   if (!ContainsKey(destruction_observers_, web_contents)) {
1225     destruction_observers_[web_contents] =
1226         new DestructionObserver(this, web_contents);
1227   }
1228 }
1229
1230 void WebContentsImpl::RemoveDestructionObserver(WebContentsImpl* web_contents) {
1231   DestructionObservers::iterator iter =
1232       destruction_observers_.find(web_contents);
1233   if (iter != destruction_observers_.end()) {
1234     delete destruction_observers_[web_contents];
1235     destruction_observers_.erase(iter);
1236   }
1237 }
1238
1239 void WebContentsImpl::AddObserver(WebContentsObserver* observer) {
1240   observers_.AddObserver(observer);
1241 }
1242
1243 void WebContentsImpl::RemoveObserver(WebContentsObserver* observer) {
1244   observers_.RemoveObserver(observer);
1245 }
1246
1247 std::set<RenderWidgetHostView*>
1248 WebContentsImpl::GetRenderWidgetHostViewsInTree() {
1249   std::set<RenderWidgetHostView*> set;
1250   if (ShowingInterstitialPage()) {
1251     set.insert(GetRenderWidgetHostView());
1252   } else {
1253     ForEachFrame(
1254         base::Bind(&AddRenderWidgetHostViewToSet, base::Unretained(&set)));
1255   }
1256   return set;
1257 }
1258
1259 void WebContentsImpl::Activate() {
1260   if (delegate_)
1261     delegate_->ActivateContents(this);
1262 }
1263
1264 void WebContentsImpl::Deactivate() {
1265   if (delegate_)
1266     delegate_->DeactivateContents(this);
1267 }
1268
1269 void WebContentsImpl::LostCapture() {
1270   if (delegate_)
1271     delegate_->LostCapture();
1272 }
1273
1274 void WebContentsImpl::RenderWidgetDeleted(
1275     RenderWidgetHostImpl* render_widget_host) {
1276   if (is_being_destroyed_) {
1277     // |created_widgets_| might have been destroyed.
1278     return;
1279   }
1280
1281   std::set<RenderWidgetHostImpl*>::iterator iter =
1282       created_widgets_.find(render_widget_host);
1283   if (iter != created_widgets_.end())
1284     created_widgets_.erase(iter);
1285
1286   if (render_widget_host &&
1287       render_widget_host->GetRoutingID() == fullscreen_widget_routing_id_) {
1288     if (delegate_ && delegate_->EmbedsFullscreenWidget())
1289       delegate_->ToggleFullscreenModeForTab(this, false);
1290     FOR_EACH_OBSERVER(WebContentsObserver,
1291                       observers_,
1292                       DidDestroyFullscreenWidget(
1293                           fullscreen_widget_routing_id_));
1294     fullscreen_widget_routing_id_ = MSG_ROUTING_NONE;
1295     if (fullscreen_widget_had_focus_at_shutdown_)
1296       view_->RestoreFocus();
1297   }
1298 }
1299
1300 void WebContentsImpl::RenderWidgetGotFocus(
1301     RenderWidgetHostImpl* render_widget_host) {
1302   // Notify the delegate if an embedded fullscreen widget was focused.
1303   if (delegate_ && render_widget_host &&
1304       delegate_->EmbedsFullscreenWidget() &&
1305       render_widget_host->GetView() == GetFullscreenRenderWidgetHostView())
1306     delegate_->WebContentsFocused(this);
1307 }
1308
1309 bool WebContentsImpl::PreHandleKeyboardEvent(
1310     const NativeWebKeyboardEvent& event,
1311     bool* is_keyboard_shortcut) {
1312   return delegate_ &&
1313       delegate_->PreHandleKeyboardEvent(this, event, is_keyboard_shortcut);
1314 }
1315
1316 void WebContentsImpl::HandleKeyboardEvent(const NativeWebKeyboardEvent& event) {
1317   if (browser_plugin_embedder_ &&
1318       browser_plugin_embedder_->HandleKeyboardEvent(event)) {
1319     return;
1320   }
1321   if (delegate_)
1322     delegate_->HandleKeyboardEvent(this, event);
1323 }
1324
1325 bool WebContentsImpl::HandleWheelEvent(
1326     const blink::WebMouseWheelEvent& event) {
1327 #if !defined(OS_MACOSX)
1328   // On platforms other than Mac, control+mousewheel changes zoom. On Mac, this
1329   // isn't done for two reasons:
1330   //   -the OS already has a gesture to do this through pinch-zoom
1331   //   -if a user starts an inertial scroll, let's go, and presses control
1332   //      (i.e. control+tab) then the OS's buffered scroll events will come in
1333   //      with control key set which isn't what the user wants
1334   if (delegate_ &&
1335       event.wheelTicksY &&
1336       (event.modifiers & blink::WebInputEvent::ControlKey) &&
1337       // Avoid adjusting the zoom in response to two-finger-scrolling touchpad
1338       // gestures, which are regrettably easy to trigger accidentally.
1339       !event.hasPreciseScrollingDeltas) {
1340     delegate_->ContentsZoomChange(event.wheelTicksY > 0);
1341     return true;
1342   }
1343 #endif
1344   return false;
1345 }
1346
1347 bool WebContentsImpl::PreHandleGestureEvent(
1348     const blink::WebGestureEvent& event) {
1349   return delegate_ && delegate_->PreHandleGestureEvent(this, event);
1350 }
1351
1352 bool WebContentsImpl::HandleGestureEvent(
1353     const blink::WebGestureEvent& event) {
1354   // Some platforms (eg. Mac) send GesturePinch events for trackpad pinch-zoom.
1355   // Use them to implement browser zoom, as for HandleWheelEvent above.
1356   if (event.type == blink::WebInputEvent::GesturePinchUpdate &&
1357       event.sourceDevice == blink::WebGestureDeviceTouchpad) {
1358     // The scale difference necessary to trigger a zoom action. Derived from
1359     // experimentation to find a value that feels reasonable.
1360     const float kZoomStepValue = 0.6f;
1361
1362     // Find the (absolute) thresholds on either side of the current zoom factor,
1363     // then convert those to actual numbers to trigger a zoom in or out.
1364     // This logic deliberately makes the range around the starting zoom value
1365     // for the gesture twice as large as the other ranges (i.e., the notches are
1366     // at ..., -3*step, -2*step, -step, step, 2*step, 3*step, ... but not at 0)
1367     // so that it's easier to get back to your starting point than it is to
1368     // overshoot.
1369     float nextStep = (abs(currentPinchZoomStepDelta_) + 1) * kZoomStepValue;
1370     float backStep = abs(currentPinchZoomStepDelta_) * kZoomStepValue;
1371     float zoomInThreshold = (currentPinchZoomStepDelta_ >= 0) ? nextStep
1372         : -backStep;
1373     float zoomOutThreshold = (currentPinchZoomStepDelta_ <= 0) ? -nextStep
1374         : backStep;
1375
1376     totalPinchGestureAmount_ += (event.data.pinchUpdate.scale - 1.0);
1377     if (totalPinchGestureAmount_ > zoomInThreshold) {
1378       currentPinchZoomStepDelta_++;
1379       if (delegate_)
1380         delegate_->ContentsZoomChange(true);
1381     } else if (totalPinchGestureAmount_ < zoomOutThreshold) {
1382       currentPinchZoomStepDelta_--;
1383       if (delegate_)
1384         delegate_->ContentsZoomChange(false);
1385     }
1386     return true;
1387   }
1388
1389   return false;
1390 }
1391
1392 void WebContentsImpl::HandleMouseDown() {
1393   if (delegate_)
1394     delegate_->HandleMouseDown();
1395 }
1396
1397 void WebContentsImpl::HandleMouseUp() {
1398   if (delegate_)
1399     delegate_->HandleMouseUp();
1400 }
1401
1402 void WebContentsImpl::HandlePointerActivate() {
1403   if (delegate_)
1404     delegate_->HandlePointerActivate();
1405 }
1406
1407 void WebContentsImpl::HandleGestureBegin() {
1408   if (delegate_)
1409     delegate_->HandleGestureBegin();
1410 }
1411
1412 void WebContentsImpl::HandleGestureEnd() {
1413   if (delegate_)
1414     delegate_->HandleGestureEnd();
1415 }
1416
1417 void WebContentsImpl::ToggleFullscreenMode(bool enter_fullscreen) {
1418   // This method is being called to enter or leave renderer-initiated fullscreen
1419   // mode.  Either way, make sure any existing fullscreen widget is shut down
1420   // first.
1421   RenderWidgetHostView* const widget_view = GetFullscreenRenderWidgetHostView();
1422   if (widget_view)
1423     RenderWidgetHostImpl::From(widget_view->GetRenderWidgetHost())->Shutdown();
1424
1425   if (delegate_)
1426     delegate_->ToggleFullscreenModeForTab(this, enter_fullscreen);
1427
1428   FOR_EACH_OBSERVER(WebContentsObserver,
1429                     observers_,
1430                     DidToggleFullscreenModeForTab(IsFullscreenForCurrentTab()));
1431 }
1432
1433 bool WebContentsImpl::IsFullscreenForCurrentTab() const {
1434   return delegate_ ? delegate_->IsFullscreenForTabOrPending(this) : false;
1435 }
1436
1437 void WebContentsImpl::RequestToLockMouse(bool user_gesture,
1438                                          bool last_unlocked_by_target) {
1439   if (delegate_) {
1440     delegate_->RequestToLockMouse(this, user_gesture, last_unlocked_by_target);
1441   } else {
1442     GotResponseToLockMouseRequest(false);
1443   }
1444 }
1445
1446 void WebContentsImpl::LostMouseLock() {
1447   if (delegate_)
1448     delegate_->LostMouseLock();
1449 }
1450
1451 void WebContentsImpl::CreateNewWindow(
1452     int render_process_id,
1453     int route_id,
1454     int main_frame_route_id,
1455     const ViewHostMsg_CreateWindow_Params& params,
1456     SessionStorageNamespace* session_storage_namespace) {
1457   // We usually create the new window in the same BrowsingInstance (group of
1458   // script-related windows), by passing in the current SiteInstance.  However,
1459   // if the opener is being suppressed (in a non-guest), we create a new
1460   // SiteInstance in its own BrowsingInstance.
1461   bool is_guest = BrowserPluginGuest::IsGuest(this);
1462
1463   // If the opener is to be suppressed, the new window can be in any process.
1464   // Since routing ids are process specific, we must not have one passed in
1465   // as argument here.
1466   DCHECK(!params.opener_suppressed || route_id == MSG_ROUTING_NONE);
1467
1468   scoped_refptr<SiteInstance> site_instance =
1469       params.opener_suppressed && !is_guest ?
1470       SiteInstance::CreateForURL(GetBrowserContext(), params.target_url) :
1471       GetSiteInstance();
1472
1473   // A message to create a new window can only come from the active process for
1474   // this WebContentsImpl instance. If any other process sends the request,
1475   // it is invalid and the process must be terminated.
1476   if (GetRenderProcessHost()->GetID() != render_process_id) {
1477     base::ProcessHandle process_handle =
1478         RenderProcessHost::FromID(render_process_id)->GetHandle();
1479     if (process_handle != base::kNullProcessHandle) {
1480       RecordAction(
1481           base::UserMetricsAction("Terminate_ProcessMismatch_CreateNewWindow"));
1482       base::KillProcess(process_handle, RESULT_CODE_KILLED, false);
1483     }
1484     return;
1485   }
1486
1487   // We must assign the SessionStorageNamespace before calling Init().
1488   //
1489   // http://crbug.com/142685
1490   const std::string& partition_id =
1491       GetContentClient()->browser()->
1492           GetStoragePartitionIdForSite(GetBrowserContext(),
1493                                        site_instance->GetSiteURL());
1494   StoragePartition* partition = BrowserContext::GetStoragePartition(
1495       GetBrowserContext(), site_instance.get());
1496   DOMStorageContextWrapper* dom_storage_context =
1497       static_cast<DOMStorageContextWrapper*>(partition->GetDOMStorageContext());
1498   SessionStorageNamespaceImpl* session_storage_namespace_impl =
1499       static_cast<SessionStorageNamespaceImpl*>(session_storage_namespace);
1500   CHECK(session_storage_namespace_impl->IsFromContext(dom_storage_context));
1501
1502   if (delegate_ &&
1503       !delegate_->ShouldCreateWebContents(this,
1504                                           route_id,
1505                                           params.window_container_type,
1506                                           params.frame_name,
1507                                           params.target_url,
1508                                           partition_id,
1509                                           session_storage_namespace)) {
1510     if (route_id != MSG_ROUTING_NONE &&
1511         !RenderViewHost::FromID(render_process_id, route_id)) {
1512       // If the embedder didn't create a WebContents for this route, we need to
1513       // delete the RenderView that had already been created.
1514       Send(new ViewMsg_Close(route_id));
1515     }
1516     GetRenderViewHost()->GetProcess()->ResumeRequestsForView(route_id);
1517     GetRenderViewHost()->GetProcess()->ResumeRequestsForView(
1518         main_frame_route_id);
1519     return;
1520   }
1521
1522   // Create the new web contents. This will automatically create the new
1523   // WebContentsView. In the future, we may want to create the view separately.
1524   CreateParams create_params(GetBrowserContext(), site_instance.get());
1525   create_params.routing_id = route_id;
1526   create_params.main_frame_routing_id = main_frame_route_id;
1527   create_params.opener = this;
1528   create_params.opener_suppressed = params.opener_suppressed;
1529   if (params.disposition == NEW_BACKGROUND_TAB)
1530     create_params.initially_hidden = true;
1531
1532   WebContentsImpl* new_contents = NULL;
1533   if (!is_guest) {
1534     create_params.context = view_->GetNativeView();
1535     create_params.initial_size = GetContainerBounds().size();
1536     new_contents = static_cast<WebContentsImpl*>(
1537         WebContents::Create(create_params));
1538   }  else {
1539     new_contents = GetBrowserPluginGuest()->CreateNewGuestWindow(create_params);
1540   }
1541   new_contents->GetController().SetSessionStorageNamespace(
1542       partition_id,
1543       session_storage_namespace);
1544   new_contents->RenderViewCreated(new_contents->GetRenderViewHost());
1545
1546   // Save the window for later if we're not suppressing the opener (since it
1547   // will be shown immediately).
1548   if (!params.opener_suppressed) {
1549     if (!is_guest) {
1550       WebContentsView* new_view = new_contents->view_.get();
1551
1552       // TODO(brettw): It seems bogus that we have to call this function on the
1553       // newly created object and give it one of its own member variables.
1554       new_view->CreateViewForWidget(new_contents->GetRenderViewHost(), false);
1555     }
1556     // Save the created window associated with the route so we can show it
1557     // later.
1558     DCHECK_NE(MSG_ROUTING_NONE, route_id);
1559     pending_contents_[route_id] = new_contents;
1560     AddDestructionObserver(new_contents);
1561   }
1562
1563   if (delegate_) {
1564     delegate_->WebContentsCreated(
1565         this, params.opener_render_frame_id, params.frame_name,
1566         params.target_url, new_contents);
1567   }
1568
1569   if (params.opener_suppressed) {
1570     // When the opener is suppressed, the original renderer cannot access the
1571     // new window.  As a result, we need to show and navigate the window here.
1572     bool was_blocked = false;
1573     if (delegate_) {
1574       gfx::Rect initial_pos;
1575       delegate_->AddNewContents(
1576           this, new_contents, params.disposition, initial_pos,
1577           params.user_gesture, &was_blocked);
1578     }
1579     if (!was_blocked) {
1580       OpenURLParams open_params(params.target_url,
1581                                 Referrer(),
1582                                 CURRENT_TAB,
1583                                 ui::PAGE_TRANSITION_LINK,
1584                                 true /* is_renderer_initiated */);
1585       open_params.user_gesture = params.user_gesture;
1586       new_contents->OpenURL(open_params);
1587     }
1588   }
1589 }
1590
1591 void WebContentsImpl::CreateNewWidget(int render_process_id,
1592                                       int route_id,
1593                                       blink::WebPopupType popup_type) {
1594   CreateNewWidget(render_process_id, route_id, false, popup_type);
1595 }
1596
1597 void WebContentsImpl::CreateNewFullscreenWidget(int render_process_id,
1598                                                 int route_id) {
1599   CreateNewWidget(render_process_id, route_id, true, blink::WebPopupTypeNone);
1600 }
1601
1602 void WebContentsImpl::CreateNewWidget(int render_process_id,
1603                                       int route_id,
1604                                       bool is_fullscreen,
1605                                       blink::WebPopupType popup_type) {
1606   RenderProcessHost* process = GetRenderProcessHost();
1607   // A message to create a new widget can only come from the active process for
1608   // this WebContentsImpl instance. If any other process sends the request,
1609   // it is invalid and the process must be terminated.
1610   if (process->GetID() != render_process_id) {
1611     base::ProcessHandle process_handle =
1612         RenderProcessHost::FromID(render_process_id)->GetHandle();
1613     if (process_handle != base::kNullProcessHandle) {
1614       RecordAction(
1615           base::UserMetricsAction("Terminate_ProcessMismatch_CreateNewWidget"));
1616       base::KillProcess(process_handle, RESULT_CODE_KILLED, false);
1617     }
1618     return;
1619   }
1620
1621   RenderWidgetHostImpl* widget_host =
1622       new RenderWidgetHostImpl(this, process, route_id, IsHidden());
1623   created_widgets_.insert(widget_host);
1624
1625   RenderWidgetHostViewBase* widget_view =
1626       static_cast<RenderWidgetHostViewBase*>(
1627           view_->CreateViewForPopupWidget(widget_host));
1628   if (!widget_view)
1629     return;
1630   if (!is_fullscreen) {
1631     // Popups should not get activated.
1632     widget_view->SetPopupType(popup_type);
1633   }
1634   // Save the created widget associated with the route so we can show it later.
1635   pending_widget_views_[route_id] = widget_view;
1636
1637 #if defined(OS_MACOSX)
1638   // A RenderWidgetHostViewMac has lifetime scoped to the view. We'll retain it
1639   // to allow it to survive the trip without being hosted.
1640   base::mac::NSObjectRetain(widget_view->GetNativeView());
1641 #endif
1642 }
1643
1644 void WebContentsImpl::ShowCreatedWindow(int route_id,
1645                                         WindowOpenDisposition disposition,
1646                                         const gfx::Rect& initial_pos,
1647                                         bool user_gesture) {
1648   WebContentsImpl* contents = GetCreatedWindow(route_id);
1649   if (contents) {
1650     WebContentsDelegate* delegate = GetDelegate();
1651     if (delegate) {
1652       delegate->AddNewContents(
1653           this, contents, disposition, initial_pos, user_gesture, NULL);
1654     }
1655   }
1656 }
1657
1658 void WebContentsImpl::ShowCreatedWidget(int route_id,
1659                                         const gfx::Rect& initial_pos) {
1660   ShowCreatedWidget(route_id, false, initial_pos);
1661 }
1662
1663 void WebContentsImpl::ShowCreatedFullscreenWidget(int route_id) {
1664   ShowCreatedWidget(route_id, true, gfx::Rect());
1665 }
1666
1667 void WebContentsImpl::ShowCreatedWidget(int route_id,
1668                                         bool is_fullscreen,
1669                                         const gfx::Rect& initial_pos) {
1670   RenderWidgetHostViewBase* widget_host_view =
1671       static_cast<RenderWidgetHostViewBase*>(GetCreatedWidget(route_id));
1672   if (!widget_host_view)
1673     return;
1674
1675   RenderWidgetHostView* view = NULL;
1676   BrowserPluginGuest* guest = GetBrowserPluginGuest();
1677   if (guest && guest->embedder_web_contents()) {
1678     view = guest->embedder_web_contents()->GetRenderWidgetHostView();
1679   } else {
1680     view = GetRenderWidgetHostView();
1681   }
1682
1683   if (is_fullscreen) {
1684     DCHECK_EQ(MSG_ROUTING_NONE, fullscreen_widget_routing_id_);
1685     view_->StoreFocus();
1686     fullscreen_widget_routing_id_ = route_id;
1687     if (delegate_ && delegate_->EmbedsFullscreenWidget()) {
1688       widget_host_view->InitAsChild(GetRenderWidgetHostView()->GetNativeView());
1689       delegate_->ToggleFullscreenModeForTab(this, true);
1690     } else {
1691       widget_host_view->InitAsFullscreen(view);
1692     }
1693     FOR_EACH_OBSERVER(WebContentsObserver,
1694                       observers_,
1695                       DidShowFullscreenWidget(route_id));
1696     if (!widget_host_view->HasFocus())
1697       widget_host_view->Focus();
1698   } else {
1699     widget_host_view->InitAsPopup(view, initial_pos);
1700   }
1701
1702   RenderWidgetHostImpl* render_widget_host_impl =
1703       RenderWidgetHostImpl::From(widget_host_view->GetRenderWidgetHost());
1704   render_widget_host_impl->Init();
1705   // Only allow privileged mouse lock for fullscreen render widget, which is
1706   // used to implement Pepper Flash fullscreen.
1707   render_widget_host_impl->set_allow_privileged_mouse_lock(is_fullscreen);
1708
1709 #if defined(OS_MACOSX)
1710   // A RenderWidgetHostViewMac has lifetime scoped to the view. Now that it's
1711   // properly embedded (or purposefully ignored) we can release the retain we
1712   // took in CreateNewWidget().
1713   base::mac::NSObjectRelease(widget_host_view->GetNativeView());
1714 #endif
1715 }
1716
1717 WebContentsImpl* WebContentsImpl::GetCreatedWindow(int route_id) {
1718   PendingContents::iterator iter = pending_contents_.find(route_id);
1719
1720   // Certain systems can block the creation of new windows. If we didn't succeed
1721   // in creating one, just return NULL.
1722   if (iter == pending_contents_.end()) {
1723     return NULL;
1724   }
1725
1726   WebContentsImpl* new_contents = iter->second;
1727   pending_contents_.erase(route_id);
1728   RemoveDestructionObserver(new_contents);
1729
1730   // Don't initialize the guest WebContents immediately.
1731   if (BrowserPluginGuest::IsGuest(new_contents))
1732     return new_contents;
1733
1734   if (!new_contents->GetRenderProcessHost()->HasConnection() ||
1735       !new_contents->GetRenderViewHost()->GetView())
1736     return NULL;
1737
1738   // Resume blocked requests for both the RenderViewHost and RenderFrameHost.
1739   // TODO(brettw): It seems bogus to reach into here and initialize the host.
1740   static_cast<RenderViewHostImpl*>(new_contents->GetRenderViewHost())->Init();
1741   static_cast<RenderFrameHostImpl*>(new_contents->GetMainFrame())->Init();
1742
1743   return new_contents;
1744 }
1745
1746 RenderWidgetHostView* WebContentsImpl::GetCreatedWidget(int route_id) {
1747   PendingWidgetViews::iterator iter = pending_widget_views_.find(route_id);
1748   if (iter == pending_widget_views_.end()) {
1749     DCHECK(false);
1750     return NULL;
1751   }
1752
1753   RenderWidgetHostView* widget_host_view = iter->second;
1754   pending_widget_views_.erase(route_id);
1755
1756   RenderWidgetHost* widget_host = widget_host_view->GetRenderWidgetHost();
1757   if (!widget_host->GetProcess()->HasConnection()) {
1758     // The view has gone away or the renderer crashed. Nothing to do.
1759     return NULL;
1760   }
1761
1762   return widget_host_view;
1763 }
1764
1765 void WebContentsImpl::RequestMediaAccessPermission(
1766     const MediaStreamRequest& request,
1767     const MediaResponseCallback& callback) {
1768   if (delegate_) {
1769     delegate_->RequestMediaAccessPermission(this, request, callback);
1770   } else {
1771     callback.Run(MediaStreamDevices(),
1772                  MEDIA_DEVICE_FAILED_DUE_TO_SHUTDOWN,
1773                  scoped_ptr<MediaStreamUI>());
1774   }
1775 }
1776
1777 bool WebContentsImpl::CheckMediaAccessPermission(const GURL& security_origin,
1778                                                  MediaStreamType type) {
1779   DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE ||
1780          type == MEDIA_DEVICE_VIDEO_CAPTURE);
1781   return delegate_ &&
1782          delegate_->CheckMediaAccessPermission(this, security_origin, type);
1783 }
1784
1785 SessionStorageNamespace* WebContentsImpl::GetSessionStorageNamespace(
1786     SiteInstance* instance) {
1787   return controller_.GetSessionStorageNamespace(instance);
1788 }
1789
1790 SessionStorageNamespaceMap WebContentsImpl::GetSessionStorageNamespaceMap() {
1791   return controller_.GetSessionStorageNamespaceMap();
1792 }
1793
1794 FrameTree* WebContentsImpl::GetFrameTree() {
1795   return &frame_tree_;
1796 }
1797
1798 void WebContentsImpl::SetIsVirtualKeyboardRequested(bool requested) {
1799   virtual_keyboard_requested_ = requested;
1800 }
1801
1802 bool WebContentsImpl::IsVirtualKeyboardRequested() {
1803   return virtual_keyboard_requested_;
1804 }
1805
1806 AccessibilityMode WebContentsImpl::GetAccessibilityMode() const {
1807   return accessibility_mode_;
1808 }
1809
1810 void WebContentsImpl::AccessibilityEventReceived(
1811     const std::vector<AXEventNotificationDetails>& details) {
1812   FOR_EACH_OBSERVER(
1813       WebContentsObserver, observers_, AccessibilityEventReceived(details));
1814 }
1815
1816 RenderFrameHost* WebContentsImpl::GetGuestByInstanceID(
1817     int browser_plugin_instance_id) {
1818   BrowserPluginGuestManager* guest_manager =
1819       GetBrowserContext()->GetGuestManager();
1820   WebContents* guest = guest_manager->GetGuestByInstanceID(
1821       this, browser_plugin_instance_id);
1822   if (!guest)
1823     return NULL;
1824   return guest->GetMainFrame();
1825 }
1826
1827 GeolocationServiceContext* WebContentsImpl::GetGeolocationServiceContext() {
1828   return geolocation_service_context_.get();
1829 }
1830
1831 void WebContentsImpl::OnShowValidationMessage(
1832     const gfx::Rect& anchor_in_root_view,
1833     const base::string16& main_text,
1834     const base::string16& sub_text) {
1835   if (delegate_)
1836     delegate_->ShowValidationMessage(
1837         this, anchor_in_root_view, main_text, sub_text);
1838 }
1839
1840 void WebContentsImpl::OnHideValidationMessage() {
1841   if (delegate_)
1842     delegate_->HideValidationMessage(this);
1843 }
1844
1845 void WebContentsImpl::OnMoveValidationMessage(
1846     const gfx::Rect& anchor_in_root_view) {
1847   if (delegate_)
1848     delegate_->MoveValidationMessage(this, anchor_in_root_view);
1849 }
1850
1851 void WebContentsImpl::DidSendScreenRects(RenderWidgetHostImpl* rwh) {
1852   if (browser_plugin_embedder_)
1853     browser_plugin_embedder_->DidSendScreenRects();
1854 }
1855
1856 BrowserAccessibilityManager*
1857     WebContentsImpl::GetRootBrowserAccessibilityManager() {
1858   RenderFrameHostImpl* rfh = static_cast<RenderFrameHostImpl*>(GetMainFrame());
1859   return rfh ? rfh->browser_accessibility_manager() : NULL;
1860 }
1861
1862 BrowserAccessibilityManager*
1863     WebContentsImpl::GetOrCreateRootBrowserAccessibilityManager() {
1864   RenderFrameHostImpl* rfh = static_cast<RenderFrameHostImpl*>(GetMainFrame());
1865   return rfh ? rfh->GetOrCreateBrowserAccessibilityManager() : NULL;
1866 }
1867
1868 void WebContentsImpl::UpdatePreferredSize(const gfx::Size& pref_size) {
1869   const gfx::Size old_size = GetPreferredSize();
1870   preferred_size_ = pref_size;
1871   OnPreferredSizeChanged(old_size);
1872 }
1873
1874 void WebContentsImpl::ResizeDueToAutoResize(const gfx::Size& new_size) {
1875   if (delegate_)
1876     delegate_->ResizeDueToAutoResize(this, new_size);
1877 }
1878
1879 WebContents* WebContentsImpl::OpenURL(const OpenURLParams& params) {
1880   if (!delegate_)
1881     return NULL;
1882
1883   WebContents* new_contents = delegate_->OpenURLFromTab(this, params);
1884   return new_contents;
1885 }
1886
1887 bool WebContentsImpl::Send(IPC::Message* message) {
1888   if (!GetRenderViewHost()) {
1889     delete message;
1890     return false;
1891   }
1892
1893   return GetRenderViewHost()->Send(message);
1894 }
1895
1896 bool WebContentsImpl::NavigateToPendingEntry(
1897     NavigationController::ReloadType reload_type) {
1898   FrameTreeNode* node = frame_tree_.root();
1899
1900   // Navigate in the FrameTreeNode specified in the pending entry, if any.  This
1901   // is currently only used in --site-per-process and tests.
1902   NavigationEntryImpl* pending_entry =
1903       NavigationEntryImpl::FromNavigationEntry(controller_.GetPendingEntry());
1904   if (pending_entry->frame_tree_node_id() != -1) {
1905     FrameTreeNode* subframe =
1906         frame_tree_.FindByID(pending_entry->frame_tree_node_id());
1907     DCHECK(subframe);
1908     if (subframe)
1909       node = subframe;
1910   }
1911
1912   return node->navigator()->NavigateToPendingEntry(
1913       node->current_frame_host(), reload_type);
1914 }
1915
1916 void WebContentsImpl::RenderFrameForInterstitialPageCreated(
1917     RenderFrameHost* render_frame_host) {
1918   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1919                     RenderFrameForInterstitialPageCreated(render_frame_host));
1920 }
1921
1922 void WebContentsImpl::AttachInterstitialPage(
1923     InterstitialPageImpl* interstitial_page) {
1924   DCHECK(interstitial_page);
1925   GetRenderManager()->set_interstitial_page(interstitial_page);
1926
1927   // Cancel any visible dialogs so that they don't interfere with the
1928   // interstitial.
1929   if (dialog_manager_)
1930     dialog_manager_->CancelActiveAndPendingDialogs(this);
1931
1932   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1933                     DidAttachInterstitialPage());
1934 }
1935
1936 void WebContentsImpl::DetachInterstitialPage() {
1937   if (ShowingInterstitialPage())
1938     GetRenderManager()->remove_interstitial_page();
1939   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
1940                     DidDetachInterstitialPage());
1941 }
1942
1943 void WebContentsImpl::SetHistoryLengthAndPrune(
1944     const SiteInstance* site_instance,
1945     int history_length,
1946     int32 minimum_page_id) {
1947   // SetHistoryLengthAndPrune doesn't work when there are pending cross-site
1948   // navigations. Callers should ensure that this is the case.
1949   if (GetRenderManager()->pending_render_view_host()) {
1950     NOTREACHED();
1951     return;
1952   }
1953   RenderViewHostImpl* rvh = GetRenderViewHostImpl();
1954   if (!rvh) {
1955     NOTREACHED();
1956     return;
1957   }
1958   if (site_instance && rvh->GetSiteInstance() != site_instance) {
1959     NOTREACHED();
1960     return;
1961   }
1962   Send(new ViewMsg_SetHistoryLengthAndPrune(GetRoutingID(),
1963                                             history_length,
1964                                             minimum_page_id));
1965 }
1966
1967 void WebContentsImpl::ReloadFocusedFrame(bool ignore_cache) {
1968   RenderFrameHost* focused_frame = GetFocusedFrame();
1969   if (!focused_frame)
1970     return;
1971
1972   focused_frame->Send(new FrameMsg_Reload(
1973       focused_frame->GetRoutingID(), ignore_cache));
1974 }
1975
1976 void WebContentsImpl::Undo() {
1977   RenderFrameHost* focused_frame = GetFocusedFrame();
1978   if (!focused_frame)
1979     return;
1980
1981   focused_frame->Send(new InputMsg_Undo(focused_frame->GetRoutingID()));
1982   RecordAction(base::UserMetricsAction("Undo"));
1983 }
1984
1985 void WebContentsImpl::Redo() {
1986   RenderFrameHost* focused_frame = GetFocusedFrame();
1987   if (!focused_frame)
1988     return;
1989   focused_frame->Send(new InputMsg_Redo(focused_frame->GetRoutingID()));
1990   RecordAction(base::UserMetricsAction("Redo"));
1991 }
1992
1993 void WebContentsImpl::Cut() {
1994   RenderFrameHost* focused_frame = GetFocusedFrame();
1995   if (!focused_frame)
1996     return;
1997
1998   focused_frame->Send(new InputMsg_Cut(focused_frame->GetRoutingID()));
1999   RecordAction(base::UserMetricsAction("Cut"));
2000 }
2001
2002 void WebContentsImpl::Copy() {
2003   RenderFrameHost* focused_frame = GetFocusedFrame();
2004   if (!focused_frame)
2005     return;
2006
2007   focused_frame->Send(new InputMsg_Copy(focused_frame->GetRoutingID()));
2008   RecordAction(base::UserMetricsAction("Copy"));
2009 }
2010
2011 void WebContentsImpl::CopyToFindPboard() {
2012 #if defined(OS_MACOSX)
2013   RenderFrameHost* focused_frame = GetFocusedFrame();
2014   if (!focused_frame)
2015     return;
2016
2017   // Windows/Linux don't have the concept of a find pasteboard.
2018   focused_frame->Send(
2019       new InputMsg_CopyToFindPboard(focused_frame->GetRoutingID()));
2020   RecordAction(base::UserMetricsAction("CopyToFindPboard"));
2021 #endif
2022 }
2023
2024 void WebContentsImpl::Paste() {
2025   RenderFrameHost* focused_frame = GetFocusedFrame();
2026   if (!focused_frame)
2027     return;
2028
2029   focused_frame->Send(new InputMsg_Paste(focused_frame->GetRoutingID()));
2030   RecordAction(base::UserMetricsAction("Paste"));
2031 }
2032
2033 void WebContentsImpl::PasteAndMatchStyle() {
2034   RenderFrameHost* focused_frame = GetFocusedFrame();
2035   if (!focused_frame)
2036     return;
2037
2038   focused_frame->Send(new InputMsg_PasteAndMatchStyle(
2039       focused_frame->GetRoutingID()));
2040   RecordAction(base::UserMetricsAction("PasteAndMatchStyle"));
2041 }
2042
2043 void WebContentsImpl::Delete() {
2044   RenderFrameHost* focused_frame = GetFocusedFrame();
2045   if (!focused_frame)
2046     return;
2047
2048   focused_frame->Send(new InputMsg_Delete(focused_frame->GetRoutingID()));
2049   RecordAction(base::UserMetricsAction("DeleteSelection"));
2050 }
2051
2052 void WebContentsImpl::SelectAll() {
2053   RenderFrameHost* focused_frame = GetFocusedFrame();
2054   if (!focused_frame)
2055     return;
2056
2057   focused_frame->Send(new InputMsg_SelectAll(focused_frame->GetRoutingID()));
2058   RecordAction(base::UserMetricsAction("SelectAll"));
2059 }
2060
2061 void WebContentsImpl::Unselect() {
2062   RenderFrameHost* focused_frame = GetFocusedFrame();
2063   if (!focused_frame)
2064     return;
2065
2066   focused_frame->Send(new InputMsg_Unselect(focused_frame->GetRoutingID()));
2067   RecordAction(base::UserMetricsAction("Unselect"));
2068 }
2069
2070 void WebContentsImpl::Replace(const base::string16& word) {
2071   RenderFrameHost* focused_frame = GetFocusedFrame();
2072   if (!focused_frame)
2073     return;
2074
2075   focused_frame->Send(new InputMsg_Replace(
2076       focused_frame->GetRoutingID(), word));
2077 }
2078
2079 void WebContentsImpl::ReplaceMisspelling(const base::string16& word) {
2080   RenderFrameHost* focused_frame = GetFocusedFrame();
2081   if (!focused_frame)
2082     return;
2083
2084   focused_frame->Send(new InputMsg_ReplaceMisspelling(
2085       focused_frame->GetRoutingID(), word));
2086 }
2087
2088 void WebContentsImpl::NotifyContextMenuClosed(
2089     const CustomContextMenuContext& context) {
2090   RenderFrameHost* focused_frame = GetFocusedFrame();
2091   if (!focused_frame)
2092     return;
2093
2094   focused_frame->Send(new FrameMsg_ContextMenuClosed(
2095       focused_frame->GetRoutingID(), context));
2096 }
2097
2098 void WebContentsImpl::ExecuteCustomContextMenuCommand(
2099     int action, const CustomContextMenuContext& context) {
2100   RenderFrameHost* focused_frame = GetFocusedFrame();
2101   if (!focused_frame)
2102     return;
2103
2104   focused_frame->Send(new FrameMsg_CustomContextMenuAction(
2105       focused_frame->GetRoutingID(), context, action));
2106 }
2107
2108 gfx::NativeView WebContentsImpl::GetNativeView() {
2109   return view_->GetNativeView();
2110 }
2111
2112 gfx::NativeView WebContentsImpl::GetContentNativeView() {
2113   return view_->GetContentNativeView();
2114 }
2115
2116 gfx::NativeWindow WebContentsImpl::GetTopLevelNativeWindow() {
2117   return view_->GetTopLevelNativeWindow();
2118 }
2119
2120 gfx::Rect WebContentsImpl::GetViewBounds() {
2121   return view_->GetViewBounds();
2122 }
2123
2124 gfx::Rect WebContentsImpl::GetContainerBounds() {
2125   gfx::Rect rv;
2126   view_->GetContainerBounds(&rv);
2127   return rv;
2128 }
2129
2130 DropData* WebContentsImpl::GetDropData() {
2131   return view_->GetDropData();
2132 }
2133
2134 void WebContentsImpl::Focus() {
2135   view_->Focus();
2136 }
2137
2138 void WebContentsImpl::SetInitialFocus() {
2139   view_->SetInitialFocus();
2140 }
2141
2142 void WebContentsImpl::StoreFocus() {
2143   view_->StoreFocus();
2144 }
2145
2146 void WebContentsImpl::RestoreFocus() {
2147   view_->RestoreFocus();
2148 }
2149
2150 void WebContentsImpl::FocusThroughTabTraversal(bool reverse) {
2151   if (ShowingInterstitialPage()) {
2152     GetRenderManager()->interstitial_page()->FocusThroughTabTraversal(reverse);
2153     return;
2154   }
2155   RenderWidgetHostView* const fullscreen_view =
2156       GetFullscreenRenderWidgetHostView();
2157   if (fullscreen_view) {
2158     fullscreen_view->Focus();
2159     return;
2160   }
2161   GetRenderViewHostImpl()->SetInitialFocus(reverse);
2162 }
2163
2164 bool WebContentsImpl::ShowingInterstitialPage() const {
2165   return GetRenderManager()->interstitial_page() != NULL;
2166 }
2167
2168 InterstitialPage* WebContentsImpl::GetInterstitialPage() const {
2169   return GetRenderManager()->interstitial_page();
2170 }
2171
2172 bool WebContentsImpl::IsSavable() {
2173   // WebKit creates Document object when MIME type is application/xhtml+xml,
2174   // so we also support this MIME type.
2175   return contents_mime_type_ == "text/html" ||
2176          contents_mime_type_ == "text/xml" ||
2177          contents_mime_type_ == "application/xhtml+xml" ||
2178          contents_mime_type_ == "text/plain" ||
2179          contents_mime_type_ == "text/css" ||
2180          net::IsSupportedJavascriptMimeType(contents_mime_type_.c_str());
2181 }
2182
2183 void WebContentsImpl::OnSavePage() {
2184   // If we can not save the page, try to download it.
2185   if (!IsSavable()) {
2186     RecordDownloadSource(INITIATED_BY_SAVE_PACKAGE_ON_NON_HTML);
2187     SaveFrame(GetURL(), Referrer());
2188     return;
2189   }
2190
2191   Stop();
2192
2193   // Create the save package and possibly prompt the user for the name to save
2194   // the page as. The user prompt is an asynchronous operation that runs on
2195   // another thread.
2196   save_package_ = new SavePackage(this);
2197   save_package_->GetSaveInfo();
2198 }
2199
2200 // Used in automated testing to bypass prompting the user for file names.
2201 // Instead, the names and paths are hard coded rather than running them through
2202 // file name sanitation and extension / mime checking.
2203 bool WebContentsImpl::SavePage(const base::FilePath& main_file,
2204                                const base::FilePath& dir_path,
2205                                SavePageType save_type) {
2206   // Stop the page from navigating.
2207   Stop();
2208
2209   save_package_ = new SavePackage(this, save_type, main_file, dir_path);
2210   return save_package_->Init(SavePackageDownloadCreatedCallback());
2211 }
2212
2213 void WebContentsImpl::SaveFrame(const GURL& url,
2214                                 const Referrer& referrer) {
2215   if (!GetURL().is_valid())
2216     return;
2217   if (delegate_ && delegate_->SaveFrame(url, referrer))
2218     return;
2219
2220   bool is_main_frame = (url == GetURL());
2221
2222   DownloadManager* dlm =
2223       BrowserContext::GetDownloadManager(GetBrowserContext());
2224   if (!dlm)
2225     return;
2226   int64 post_id = -1;
2227   if (is_main_frame) {
2228     const NavigationEntry* entry = controller_.GetLastCommittedEntry();
2229     if (entry)
2230       post_id = entry->GetPostID();
2231   }
2232   scoped_ptr<DownloadUrlParameters> params(
2233       DownloadUrlParameters::FromWebContents(this, url));
2234   params->set_referrer(referrer);
2235   params->set_post_id(post_id);
2236   params->set_prefer_cache(true);
2237   if (post_id >= 0)
2238     params->set_method("POST");
2239   params->set_prompt(true);
2240   dlm->DownloadUrl(params.Pass());
2241 }
2242
2243 void WebContentsImpl::GenerateMHTML(
2244     const base::FilePath& file,
2245     const base::Callback<void(int64)>& callback) {
2246   MHTMLGenerationManager::GetInstance()->SaveMHTML(this, file, callback);
2247 }
2248
2249 const std::string& WebContentsImpl::GetContentsMimeType() const {
2250   return contents_mime_type_;
2251 }
2252
2253 bool WebContentsImpl::WillNotifyDisconnection() const {
2254   return notify_disconnection_;
2255 }
2256
2257 void WebContentsImpl::SetOverrideEncoding(const std::string& encoding) {
2258   SetEncoding(encoding);
2259   Send(new ViewMsg_SetPageEncoding(GetRoutingID(), encoding));
2260 }
2261
2262 void WebContentsImpl::ResetOverrideEncoding() {
2263   canonical_encoding_.clear();
2264   Send(new ViewMsg_ResetPageEncodingToDefault(GetRoutingID()));
2265 }
2266
2267 RendererPreferences* WebContentsImpl::GetMutableRendererPrefs() {
2268   return &renderer_preferences_;
2269 }
2270
2271 void WebContentsImpl::Close() {
2272   Close(GetRenderViewHost());
2273 }
2274
2275 void WebContentsImpl::DragSourceEndedAt(int client_x, int client_y,
2276     int screen_x, int screen_y, blink::WebDragOperation operation) {
2277   if (browser_plugin_embedder_.get())
2278     browser_plugin_embedder_->DragSourceEndedAt(client_x, client_y,
2279         screen_x, screen_y, operation);
2280   if (GetRenderViewHost())
2281     GetRenderViewHostImpl()->DragSourceEndedAt(client_x, client_y,
2282         screen_x, screen_y, operation);
2283 }
2284
2285 void WebContentsImpl::DidGetResourceResponseStart(
2286   const ResourceRequestDetails& details) {
2287   controller_.ssl_manager()->DidStartResourceResponse(details);
2288
2289   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2290                     DidGetResourceResponseStart(details));
2291
2292   // TODO(avi): Remove. http://crbug.com/170921
2293   NotificationService::current()->Notify(
2294       NOTIFICATION_RESOURCE_RESPONSE_STARTED,
2295       Source<WebContents>(this),
2296       Details<const ResourceRequestDetails>(&details));
2297 }
2298
2299 void WebContentsImpl::DidGetRedirectForResourceRequest(
2300   RenderFrameHost* render_frame_host,
2301   const ResourceRedirectDetails& details) {
2302   controller_.ssl_manager()->DidReceiveResourceRedirect(details);
2303
2304   FOR_EACH_OBSERVER(
2305       WebContentsObserver,
2306       observers_,
2307       DidGetRedirectForResourceRequest(render_frame_host, details));
2308
2309   // TODO(avi): Remove. http://crbug.com/170921
2310   NotificationService::current()->Notify(
2311       NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
2312       Source<WebContents>(this),
2313       Details<const ResourceRedirectDetails>(&details));
2314 }
2315
2316 void WebContentsImpl::SystemDragEnded() {
2317   if (GetRenderViewHost())
2318     GetRenderViewHostImpl()->DragSourceSystemDragEnded();
2319   if (delegate_)
2320     delegate_->DragEnded();
2321   if (browser_plugin_embedder_.get())
2322     browser_plugin_embedder_->SystemDragEnded();
2323 }
2324
2325 void WebContentsImpl::UserGestureDone() {
2326   OnUserGesture();
2327 }
2328
2329 void WebContentsImpl::SetClosedByUserGesture(bool value) {
2330   closed_by_user_gesture_ = value;
2331 }
2332
2333 bool WebContentsImpl::GetClosedByUserGesture() const {
2334   return closed_by_user_gesture_;
2335 }
2336
2337 void WebContentsImpl::ViewSource() {
2338   if (!delegate_)
2339     return;
2340
2341   NavigationEntry* entry = GetController().GetLastCommittedEntry();
2342   if (!entry)
2343     return;
2344
2345   delegate_->ViewSourceForTab(this, entry->GetURL());
2346 }
2347
2348 void WebContentsImpl::ViewFrameSource(const GURL& url,
2349                                       const PageState& page_state) {
2350   if (!delegate_)
2351     return;
2352
2353   delegate_->ViewSourceForFrame(this, url, page_state);
2354 }
2355
2356 int WebContentsImpl::GetMinimumZoomPercent() const {
2357   return minimum_zoom_percent_;
2358 }
2359
2360 int WebContentsImpl::GetMaximumZoomPercent() const {
2361   return maximum_zoom_percent_;
2362 }
2363
2364 gfx::Size WebContentsImpl::GetPreferredSize() const {
2365   return capturer_count_ == 0 ? preferred_size_ : preferred_size_for_capture_;
2366 }
2367
2368 bool WebContentsImpl::GotResponseToLockMouseRequest(bool allowed) {
2369   if (GetBrowserPluginGuest())
2370     return GetBrowserPluginGuest()->LockMouse(allowed);
2371
2372   return GetRenderViewHost() ?
2373       GetRenderViewHostImpl()->GotResponseToLockMouseRequest(allowed) : false;
2374 }
2375
2376 bool WebContentsImpl::HasOpener() const {
2377   return opener_ != NULL;
2378 }
2379
2380 void WebContentsImpl::DidChooseColorInColorChooser(SkColor color) {
2381   if (!color_chooser_info_.get())
2382     return;
2383   RenderFrameHost* rfh = RenderFrameHost::FromID(
2384       color_chooser_info_->render_process_id,
2385       color_chooser_info_->render_frame_id);
2386   if (!rfh)
2387     return;
2388
2389   rfh->Send(new FrameMsg_DidChooseColorResponse(
2390       rfh->GetRoutingID(), color_chooser_info_->identifier, color));
2391 }
2392
2393 void WebContentsImpl::DidEndColorChooser() {
2394   if (!color_chooser_info_.get())
2395     return;
2396   RenderFrameHost* rfh = RenderFrameHost::FromID(
2397       color_chooser_info_->render_process_id,
2398       color_chooser_info_->render_frame_id);
2399   if (!rfh)
2400     return;
2401
2402   rfh->Send(new FrameMsg_DidEndColorChooser(
2403       rfh->GetRoutingID(), color_chooser_info_->identifier));
2404   color_chooser_info_.reset();
2405 }
2406
2407 int WebContentsImpl::DownloadImage(const GURL& url,
2408                                    bool is_favicon,
2409                                    uint32_t max_bitmap_size,
2410                                    const ImageDownloadCallback& callback) {
2411   int id = StartDownload(GetMainFrame(), url, is_favicon, max_bitmap_size);
2412   image_download_map_[id] = callback;
2413   return id;
2414 }
2415
2416 bool WebContentsImpl::IsSubframe() const {
2417   return is_subframe_;
2418 }
2419
2420 void WebContentsImpl::Find(int request_id,
2421                            const base::string16& search_text,
2422                            const blink::WebFindOptions& options) {
2423   // See if a top level browser plugin handles the find request first.
2424   if (browser_plugin_embedder_ &&
2425       browser_plugin_embedder_->Find(request_id, search_text, options)) {
2426     return;
2427   }
2428   Send(new ViewMsg_Find(GetRoutingID(), request_id, search_text, options));
2429 }
2430
2431 void WebContentsImpl::StopFinding(StopFindAction action) {
2432   Send(new ViewMsg_StopFinding(GetRoutingID(), action));
2433 }
2434
2435 void WebContentsImpl::InsertCSS(const std::string& css) {
2436   GetMainFrame()->Send(new FrameMsg_CSSInsertRequest(
2437       GetMainFrame()->GetRoutingID(), css));
2438 }
2439
2440 bool WebContentsImpl::WasRecentlyAudible() {
2441   return audio_stream_monitor_.WasRecentlyAudible();
2442 }
2443
2444 void WebContentsImpl::GetManifest(const GetManifestCallback& callback) {
2445   manifest_manager_host_->GetManifest(GetMainFrame(), callback);
2446 }
2447
2448 bool WebContentsImpl::FocusLocationBarByDefault() {
2449   NavigationEntry* entry = controller_.GetVisibleEntry();
2450   if (entry && entry->GetURL() == GURL(url::kAboutBlankURL))
2451     return true;
2452   return delegate_ && delegate_->ShouldFocusLocationBarByDefault(this);
2453 }
2454
2455 void WebContentsImpl::SetFocusToLocationBar(bool select_all) {
2456   if (delegate_)
2457     delegate_->SetFocusToLocationBar(select_all);
2458 }
2459
2460 void WebContentsImpl::DidStartProvisionalLoad(
2461     RenderFrameHostImpl* render_frame_host,
2462     const GURL& validated_url,
2463     bool is_error_page,
2464     bool is_iframe_srcdoc) {
2465   // Notify observers about the start of the provisional load.
2466   FOR_EACH_OBSERVER(
2467       WebContentsObserver,
2468       observers_,
2469       DidStartProvisionalLoadForFrame(
2470           render_frame_host, validated_url, is_error_page, is_iframe_srcdoc));
2471 }
2472
2473 void WebContentsImpl::DidStartNavigationTransition(
2474     RenderFrameHostImpl* render_frame_host) {
2475 #if defined(OS_ANDROID)
2476   int render_frame_id = render_frame_host->GetRoutingID();
2477   GetWebContentsAndroid()->DidStartNavigationTransitionForFrame(
2478       render_frame_id);
2479 #endif
2480 }
2481
2482 void WebContentsImpl::DidFailProvisionalLoadWithError(
2483     RenderFrameHostImpl* render_frame_host,
2484     const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {
2485   GURL validated_url(params.url);
2486   FOR_EACH_OBSERVER(WebContentsObserver,
2487                     observers_,
2488                     DidFailProvisionalLoad(render_frame_host,
2489                                            validated_url,
2490                                            params.error_code,
2491                                            params.error_description));
2492 }
2493
2494 void WebContentsImpl::DidFailLoadWithError(
2495     RenderFrameHostImpl* render_frame_host,
2496     const GURL& url,
2497     int error_code,
2498     const base::string16& error_description) {
2499   FOR_EACH_OBSERVER(
2500       WebContentsObserver,
2501       observers_,
2502       DidFailLoad(render_frame_host, url, error_code, error_description));
2503 }
2504
2505 void WebContentsImpl::NotifyChangedNavigationState(
2506     InvalidateTypes changed_flags) {
2507   NotifyNavigationStateChanged(changed_flags);
2508 }
2509
2510 void WebContentsImpl::AboutToNavigateRenderFrame(
2511       RenderFrameHostImpl* render_frame_host) {
2512   // Notify observers that we will navigate in this RenderFrame.
2513   FOR_EACH_OBSERVER(
2514       WebContentsObserver,
2515       observers_,
2516       AboutToNavigateRenderFrame(render_frame_host));
2517 }
2518
2519 void WebContentsImpl::DidStartNavigationToPendingEntry(
2520       RenderFrameHostImpl* render_frame_host,
2521       const GURL& url,
2522       NavigationController::ReloadType reload_type) {
2523   // Notify observers about navigation.
2524   FOR_EACH_OBSERVER(
2525       WebContentsObserver,
2526       observers_,
2527       DidStartNavigationToPendingEntry(url, reload_type));
2528 }
2529
2530 void WebContentsImpl::RequestOpenURL(RenderFrameHostImpl* render_frame_host,
2531                                      const OpenURLParams& params) {
2532   WebContents* new_contents = OpenURL(params);
2533
2534   if (new_contents) {
2535     // Notify observers.
2536     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2537                       DidOpenRequestedURL(new_contents,
2538                                           render_frame_host,
2539                                           params.url,
2540                                           params.referrer,
2541                                           params.disposition,
2542                                           params.transition));
2543   }
2544 }
2545
2546 bool WebContentsImpl::ShouldPreserveAbortedURLs() {
2547   if (!delegate_)
2548     return false;
2549   return delegate_->ShouldPreserveAbortedURLs(this);
2550 }
2551
2552 void WebContentsImpl::DidCommitProvisionalLoad(
2553     RenderFrameHostImpl* render_frame_host,
2554     const GURL& url,
2555     ui::PageTransition transition_type) {
2556   // Notify observers about the commit of the provisional load.
2557   FOR_EACH_OBSERVER(WebContentsObserver,
2558                     observers_,
2559                     DidCommitProvisionalLoadForFrame(
2560                         render_frame_host, url, transition_type));
2561 }
2562
2563 void WebContentsImpl::DidNavigateMainFramePreCommit(
2564     bool navigation_is_within_page) {
2565   // Ensure fullscreen mode is exited before committing the navigation to a
2566   // different page.  The next page will not start out assuming it is in
2567   // fullscreen mode.
2568   if (navigation_is_within_page) {
2569     // No page change?  Then, the renderer and browser can remain in fullscreen.
2570     return;
2571   }
2572   if (IsFullscreenForCurrentTab())
2573     GetRenderViewHost()->ExitFullscreen();
2574   DCHECK(!IsFullscreenForCurrentTab());
2575 }
2576
2577 void WebContentsImpl::DidNavigateMainFramePostCommit(
2578     const LoadCommittedDetails& details,
2579     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
2580   if (details.is_navigation_to_different_page()) {
2581     // Clear the status bubble. This is a workaround for a bug where WebKit
2582     // doesn't let us know that the cursor left an element during a
2583     // transition (this is also why the mouse cursor remains as a hand after
2584     // clicking on a link); see bugs 1184641 and 980803. We don't want to
2585     // clear the bubble when a user navigates to a named anchor in the same
2586     // page.
2587     UpdateTargetURL(GURL());
2588   }
2589
2590   if (!details.is_in_page) {
2591     // Once the main frame is navigated, we're no longer considered to have
2592     // displayed insecure content.
2593     displayed_insecure_content_ = false;
2594     SSLManager::NotifySSLInternalStateChanged(
2595         GetController().GetBrowserContext());
2596   }
2597
2598   // Notify observers about navigation.
2599   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2600                     DidNavigateMainFrame(details, params));
2601
2602   if (delegate_)
2603     delegate_->DidNavigateMainFramePostCommit(this);
2604   view_->SetOverscrollControllerEnabled(CanOverscrollContent());
2605 }
2606
2607 void WebContentsImpl::DidNavigateAnyFramePostCommit(
2608     RenderFrameHostImpl* render_frame_host,
2609     const LoadCommittedDetails& details,
2610     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
2611   // Now that something has committed, we don't need to track whether the
2612   // initial page has been accessed.
2613   has_accessed_initial_document_ = false;
2614
2615   // If we navigate off the page, close all JavaScript dialogs.
2616   if (dialog_manager_ && !details.is_in_page)
2617     dialog_manager_->CancelActiveAndPendingDialogs(this);
2618
2619   // Notify observers about navigation.
2620   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2621                     DidNavigateAnyFrame(render_frame_host, details, params));
2622 }
2623
2624 void WebContentsImpl::SetMainFrameMimeType(const std::string& mime_type) {
2625   contents_mime_type_ = mime_type;
2626 }
2627
2628 bool WebContentsImpl::CanOverscrollContent() const {
2629   // Disable overscroll when touch emulation is on. See crbug.com/369938.
2630   if (force_disable_overscroll_content_)
2631     return false;
2632
2633   if (delegate_)
2634     return delegate_->CanOverscrollContent();
2635
2636   return false;
2637 }
2638
2639 void WebContentsImpl::OnThemeColorChanged(SkColor theme_color) {
2640   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2641                     DidChangeThemeColor(theme_color));
2642 }
2643
2644 void WebContentsImpl::OnDidLoadResourceFromMemoryCache(
2645     const GURL& url,
2646     const std::string& security_info,
2647     const std::string& http_method,
2648     const std::string& mime_type,
2649     ResourceType resource_type) {
2650   base::StatsCounter cache("WebKit.CacheHit");
2651   cache.Increment();
2652
2653   // Send out a notification that we loaded a resource from our memory cache.
2654   int cert_id = 0;
2655   net::CertStatus cert_status = 0;
2656   int security_bits = -1;
2657   int connection_status = 0;
2658   SignedCertificateTimestampIDStatusList signed_certificate_timestamp_ids;
2659   DeserializeSecurityInfo(security_info, &cert_id, &cert_status,
2660                           &security_bits, &connection_status,
2661                           &signed_certificate_timestamp_ids);
2662   // TODO(alcutter,eranm): Pass signed_certificate_timestamp_ids into details
2663   LoadFromMemoryCacheDetails details(
2664       url, GetRenderProcessHost()->GetID(), cert_id, cert_status, http_method,
2665       mime_type, resource_type);
2666
2667   controller_.ssl_manager()->DidLoadFromMemoryCache(details);
2668
2669   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2670                     DidLoadResourceFromMemoryCache(details));
2671
2672   if (url.is_valid() && url.SchemeIsHTTPOrHTTPS()) {
2673     scoped_refptr<net::URLRequestContextGetter> request_context(
2674         resource_type == RESOURCE_TYPE_MEDIA ?
2675             GetBrowserContext()->GetMediaRequestContextForRenderProcess(
2676                 GetRenderProcessHost()->GetID()) :
2677             GetBrowserContext()->GetRequestContextForRenderProcess(
2678                 GetRenderProcessHost()->GetID()));
2679     BrowserThread::PostTask(
2680         BrowserThread::IO,
2681         FROM_HERE,
2682         base::Bind(&NotifyCacheOnIO, request_context, url, http_method));
2683   }
2684 }
2685
2686 void WebContentsImpl::OnDidDisplayInsecureContent() {
2687   RecordAction(base::UserMetricsAction("SSL.DisplayedInsecureContent"));
2688   displayed_insecure_content_ = true;
2689   SSLManager::NotifySSLInternalStateChanged(
2690       GetController().GetBrowserContext());
2691 }
2692
2693 void WebContentsImpl::OnDidRunInsecureContent(
2694     const std::string& security_origin, const GURL& target_url) {
2695   LOG(WARNING) << security_origin << " ran insecure content from "
2696                << target_url.possibly_invalid_spec();
2697   RecordAction(base::UserMetricsAction("SSL.RanInsecureContent"));
2698   if (EndsWith(security_origin, kDotGoogleDotCom, false))
2699     RecordAction(base::UserMetricsAction("SSL.RanInsecureContentGoogle"));
2700   controller_.ssl_manager()->DidRunInsecureContent(security_origin);
2701   displayed_insecure_content_ = true;
2702   SSLManager::NotifySSLInternalStateChanged(
2703       GetController().GetBrowserContext());
2704 }
2705
2706 void WebContentsImpl::OnDocumentLoadedInFrame() {
2707   CHECK(render_frame_message_source_);
2708   CHECK(!render_view_message_source_);
2709   RenderFrameHostImpl* rfh =
2710       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2711   FOR_EACH_OBSERVER(
2712       WebContentsObserver, observers_, DocumentLoadedInFrame(rfh));
2713 }
2714
2715 void WebContentsImpl::OnDidFinishLoad(
2716     const GURL& url) {
2717   if (!render_frame_message_source_) {
2718     RecordAction(base::UserMetricsAction("BadMessageTerminate_RVD2"));
2719     GetRenderProcessHost()->ReceivedBadMessage();
2720     return;
2721   }
2722
2723   GURL validated_url(url);
2724   RenderProcessHost* render_process_host =
2725       render_frame_message_source_->GetProcess();
2726   render_process_host->FilterURL(false, &validated_url);
2727
2728   RenderFrameHostImpl* rfh =
2729       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2730   FOR_EACH_OBSERVER(
2731       WebContentsObserver, observers_, DidFinishLoad(rfh, validated_url));
2732 }
2733
2734 void WebContentsImpl::OnDidStartLoading(bool to_different_document) {
2735   RenderFrameHostImpl* rfh =
2736       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2737   int64 render_frame_id = rfh->frame_tree_node()->frame_tree_node_id();
2738
2739   // It is possible to get multiple calls to OnDidStartLoading that don't have
2740   // corresponding calls to OnDidStopLoading:
2741   // - With "swappedout://" URLs, this happens when a RenderView gets swapped
2742   //   out for a cross-process navigation, and it turns into a placeholder for
2743   //   one being rendered in a different process.
2744   // - Also, there might be more than one RenderFrameHost sharing the same
2745   //   FrameTreeNode (and thus sharing its ID) each sending a start.
2746   // - But in the future, once clamy@ moves navigation network requests to the
2747   //   browser process, there's a good chance that callbacks about starting and
2748   //   stopping will all be handled by the browser. When that happens, there
2749   //   should no longer be a start/stop call imbalance. TODO(avi): When this
2750   //   future arrives, update this code to not allow this case.
2751   DCHECK_GE(loading_frames_in_progress_, 0);
2752   if (loading_progresses_.find(render_frame_id) == loading_progresses_.end()) {
2753     if (loading_frames_in_progress_ == 0)
2754       DidStartLoading(rfh, to_different_document);
2755     ++loading_frames_in_progress_;
2756   }
2757
2758   loading_progresses_[render_frame_id] = kMinimumLoadingProgress;
2759   SendLoadProgressChanged();
2760 }
2761
2762 void WebContentsImpl::OnDidStopLoading() {
2763   RenderFrameHostImpl* rfh =
2764       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2765   int64 render_frame_id = rfh->frame_tree_node()->frame_tree_node_id();
2766
2767   if (loading_progresses_.find(render_frame_id) != loading_progresses_.end()) {
2768     // Load stopped while we were still tracking load.  Make sure we update
2769     // progress based on this frame's completion.
2770     loading_progresses_[render_frame_id] = 1.0;
2771     SendLoadProgressChanged();
2772     // Then we clean-up our states.
2773     if (loading_total_progress_ == 1.0)
2774       ResetLoadProgressState();
2775   }
2776
2777   // TODO(japhet): This should be a DCHECK, but the pdf plugin sometimes
2778   // calls DidStopLoading() without a matching DidStartLoading().
2779   if (loading_frames_in_progress_ == 0)
2780     return;
2781   --loading_frames_in_progress_;
2782   if (loading_frames_in_progress_ == 0)
2783     DidStopLoading(rfh);
2784 }
2785
2786 void WebContentsImpl::OnDidChangeLoadProgress(double load_progress) {
2787   RenderFrameHostImpl* rfh =
2788       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2789   int64 render_frame_id = rfh->frame_tree_node()->frame_tree_node_id();
2790
2791   loading_progresses_[render_frame_id] = load_progress;
2792
2793   // We notify progress change immediately for the first and last updates.
2794   // Also, since the message loop may be pretty busy when a page is loaded, it
2795   // might not execute a posted task in a timely manner so we make sure to
2796   // immediately send progress report if enough time has passed.
2797   base::TimeDelta min_delay =
2798       base::TimeDelta::FromMilliseconds(kMinimumDelayBetweenLoadingUpdatesMS);
2799   if (load_progress == 1.0 || loading_last_progress_update_.is_null() ||
2800       base::TimeTicks::Now() - loading_last_progress_update_ > min_delay) {
2801     // If there is a pending task to send progress, it is now obsolete.
2802     loading_weak_factory_.InvalidateWeakPtrs();
2803     SendLoadProgressChanged();
2804     if (loading_total_progress_ == 1.0)
2805       ResetLoadProgressState();
2806     return;
2807   }
2808
2809   if (loading_weak_factory_.HasWeakPtrs())
2810     return;
2811
2812   base::MessageLoop::current()->PostDelayedTask(
2813       FROM_HERE,
2814       base::Bind(&WebContentsImpl::SendLoadProgressChanged,
2815                  loading_weak_factory_.GetWeakPtr()),
2816       min_delay);
2817 }
2818
2819 void WebContentsImpl::OnGoToEntryAtOffset(int offset) {
2820   if (!delegate_ || delegate_->OnGoToEntryOffset(offset))
2821     controller_.GoToOffset(offset);
2822 }
2823
2824 void WebContentsImpl::OnUpdateZoomLimits(int minimum_percent,
2825                                          int maximum_percent) {
2826   minimum_zoom_percent_ = minimum_percent;
2827   maximum_zoom_percent_ = maximum_percent;
2828 }
2829
2830 void WebContentsImpl::OnEnumerateDirectory(int request_id,
2831                                            const base::FilePath& path) {
2832   if (!delegate_)
2833     return;
2834
2835   ChildProcessSecurityPolicyImpl* policy =
2836       ChildProcessSecurityPolicyImpl::GetInstance();
2837   if (policy->CanReadFile(GetRenderProcessHost()->GetID(), path))
2838     delegate_->EnumerateDirectory(this, request_id, path);
2839 }
2840
2841 void WebContentsImpl::OnRegisterProtocolHandler(const std::string& protocol,
2842                                                 const GURL& url,
2843                                                 const base::string16& title,
2844                                                 bool user_gesture) {
2845   if (!delegate_)
2846     return;
2847
2848   ChildProcessSecurityPolicyImpl* policy =
2849       ChildProcessSecurityPolicyImpl::GetInstance();
2850   if (policy->IsPseudoScheme(protocol))
2851     return;
2852
2853   delegate_->RegisterProtocolHandler(this, protocol, url, user_gesture);
2854 }
2855
2856 void WebContentsImpl::OnUnregisterProtocolHandler(const std::string& protocol,
2857                                                   const GURL& url,
2858                                                   bool user_gesture) {
2859   if (!delegate_)
2860     return;
2861
2862   ChildProcessSecurityPolicyImpl* policy =
2863       ChildProcessSecurityPolicyImpl::GetInstance();
2864   if (policy->IsPseudoScheme(protocol))
2865     return;
2866
2867   delegate_->UnregisterProtocolHandler(this, protocol, url, user_gesture);
2868 }
2869
2870 void WebContentsImpl::OnFindReply(int request_id,
2871                                   int number_of_matches,
2872                                   const gfx::Rect& selection_rect,
2873                                   int active_match_ordinal,
2874                                   bool final_update) {
2875   if (delegate_) {
2876     delegate_->FindReply(this, request_id, number_of_matches, selection_rect,
2877                          active_match_ordinal, final_update);
2878   }
2879 }
2880
2881 #if defined(OS_ANDROID)
2882 void WebContentsImpl::OnFindMatchRectsReply(
2883     int version,
2884     const std::vector<gfx::RectF>& rects,
2885     const gfx::RectF& active_rect) {
2886   if (delegate_)
2887     delegate_->FindMatchRectsReply(this, version, rects, active_rect);
2888 }
2889
2890 void WebContentsImpl::OnOpenDateTimeDialog(
2891     const ViewHostMsg_DateTimeDialogValue_Params& value) {
2892   date_time_chooser_->ShowDialog(GetTopLevelNativeWindow(),
2893                                  GetRenderViewHost(),
2894                                  value.dialog_type,
2895                                  value.dialog_value,
2896                                  value.minimum,
2897                                  value.maximum,
2898                                  value.step,
2899                                  value.suggestions);
2900 }
2901 #endif
2902
2903 void WebContentsImpl::OnDomOperationResponse(const std::string& json_string,
2904                                              int automation_id) {
2905   DomOperationNotificationDetails details(json_string, automation_id);
2906   NotificationService::current()->Notify(
2907       NOTIFICATION_DOM_OPERATION_RESPONSE,
2908       Source<WebContents>(this),
2909       Details<DomOperationNotificationDetails>(&details));
2910 }
2911
2912 void WebContentsImpl::OnAppCacheAccessed(const GURL& manifest_url,
2913                                          bool blocked_by_policy) {
2914   // Notify observers about navigation.
2915   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2916                     AppCacheAccessed(manifest_url, blocked_by_policy));
2917 }
2918
2919 void WebContentsImpl::OnOpenColorChooser(
2920     int color_chooser_id,
2921     SkColor color,
2922     const std::vector<ColorSuggestion>& suggestions) {
2923   ColorChooser* new_color_chooser = delegate_ ?
2924       delegate_->OpenColorChooser(this, color, suggestions) :
2925       NULL;
2926   if (!new_color_chooser)
2927     return;
2928   if (color_chooser_info_.get())
2929     color_chooser_info_->chooser->End();
2930
2931   color_chooser_info_.reset(new ColorChooserInfo(
2932       render_frame_message_source_->GetProcess()->GetID(),
2933       render_frame_message_source_->GetRoutingID(),
2934       new_color_chooser,
2935       color_chooser_id));
2936 }
2937
2938 void WebContentsImpl::OnEndColorChooser(int color_chooser_id) {
2939   if (color_chooser_info_ &&
2940       color_chooser_id == color_chooser_info_->identifier)
2941     color_chooser_info_->chooser->End();
2942 }
2943
2944 void WebContentsImpl::OnSetSelectedColorInColorChooser(int color_chooser_id,
2945                                                        SkColor color) {
2946   if (color_chooser_info_ &&
2947       color_chooser_id == color_chooser_info_->identifier)
2948     color_chooser_info_->chooser->SetSelectedColor(color);
2949 }
2950
2951 // This exists for render views that don't have a WebUI, but do have WebUI
2952 // bindings enabled.
2953 void WebContentsImpl::OnWebUISend(const GURL& source_url,
2954                                   const std::string& name,
2955                                   const base::ListValue& args) {
2956   if (delegate_)
2957     delegate_->WebUISend(this, source_url, name, args);
2958 }
2959
2960 #if defined(ENABLE_PLUGINS)
2961 void WebContentsImpl::OnPepperPluginHung(int plugin_child_id,
2962                                          const base::FilePath& path,
2963                                          bool is_hung) {
2964   UMA_HISTOGRAM_COUNTS("Pepper.PluginHung", 1);
2965
2966   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2967                     PluginHungStatusChanged(plugin_child_id, path, is_hung));
2968 }
2969
2970 void WebContentsImpl::OnPluginCrashed(const base::FilePath& plugin_path,
2971                                       base::ProcessId plugin_pid) {
2972   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2973                     PluginCrashed(plugin_path, plugin_pid));
2974 }
2975
2976 void WebContentsImpl::OnRequestPpapiBrokerPermission(
2977     int routing_id,
2978     const GURL& url,
2979     const base::FilePath& plugin_path) {
2980   if (!delegate_) {
2981     OnPpapiBrokerPermissionResult(routing_id, false);
2982     return;
2983   }
2984
2985   if (!delegate_->RequestPpapiBrokerPermission(
2986       this, url, plugin_path,
2987       base::Bind(&WebContentsImpl::OnPpapiBrokerPermissionResult,
2988                  base::Unretained(this), routing_id))) {
2989     NOTIMPLEMENTED();
2990     OnPpapiBrokerPermissionResult(routing_id, false);
2991   }
2992 }
2993
2994 void WebContentsImpl::OnPpapiBrokerPermissionResult(int routing_id,
2995                                                     bool result) {
2996   Send(new ViewMsg_PpapiBrokerPermissionResult(routing_id, result));
2997 }
2998
2999 void WebContentsImpl::OnBrowserPluginMessage(const IPC::Message& message) {
3000   // This creates a BrowserPluginEmbedder, which handles all the BrowserPlugin
3001   // specific messages for this WebContents. This means that any message from
3002   // a BrowserPlugin prior to this will be ignored.
3003   // For more info, see comment above classes BrowserPluginEmbedder and
3004   // BrowserPluginGuest.
3005   CHECK(!browser_plugin_embedder_.get());
3006   browser_plugin_embedder_.reset(BrowserPluginEmbedder::Create(this));
3007   browser_plugin_embedder_->OnMessageReceived(message);
3008 }
3009 #endif  // defined(ENABLE_PLUGINS)
3010
3011 void WebContentsImpl::OnDidDownloadImage(
3012     int id,
3013     int http_status_code,
3014     const GURL& image_url,
3015     const std::vector<SkBitmap>& bitmaps,
3016     const std::vector<gfx::Size>& original_bitmap_sizes) {
3017   if (bitmaps.size() != original_bitmap_sizes.size())
3018     return;
3019
3020   ImageDownloadMap::iterator iter = image_download_map_.find(id);
3021   if (iter == image_download_map_.end()) {
3022     // Currently WebContents notifies us of ANY downloads so that it is
3023     // possible to get here.
3024     return;
3025   }
3026   if (!iter->second.is_null()) {
3027     iter->second.Run(
3028         id, http_status_code, image_url, bitmaps, original_bitmap_sizes);
3029   }
3030   image_download_map_.erase(id);
3031 }
3032
3033 void WebContentsImpl::OnUpdateFaviconURL(
3034     const std::vector<FaviconURL>& candidates) {
3035   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3036                     DidUpdateFaviconURL(candidates));
3037 }
3038
3039 void WebContentsImpl::CreateAudioPowerSaveBlocker() {
3040   // ChromeOS has its own way of handling power save blocks for media.
3041 #if !defined(OS_CHROMEOS)
3042   DCHECK(!audio_power_save_blocker_);
3043   audio_power_save_blocker_ = PowerSaveBlocker::Create(
3044       PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension, "Playing Audio");
3045 #endif
3046 }
3047
3048 void WebContentsImpl::CreateVideoPowerSaveBlocker() {
3049   // ChromeOS has its own way of handling power save blocks for media.
3050 #if !defined(OS_CHROMEOS)
3051   DCHECK(!video_power_save_blocker_);
3052   DCHECK(!active_video_players_.empty());
3053   video_power_save_blocker_ = PowerSaveBlocker::Create(
3054       PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep, "Playing Video");
3055 #if defined(OS_ANDROID)
3056   static_cast<PowerSaveBlockerImpl*>(video_power_save_blocker_.get())
3057       ->InitDisplaySleepBlocker(GetView()->GetNativeView());
3058 #endif
3059 #endif
3060 }
3061
3062 void WebContentsImpl::MaybeReleasePowerSaveBlockers() {
3063   // If there are no more audio players and we don't have audio stream
3064   // monitoring, release the audio power save blocker here instead of during
3065   // NotifyNavigationStateChanged().
3066   if (active_audio_players_.empty() &&
3067       !AudioStreamMonitor::monitoring_available()) {
3068     audio_power_save_blocker_.reset();
3069   }
3070
3071   // If there are no more video players, clear the video power save blocker.
3072   if (active_video_players_.empty())
3073     video_power_save_blocker_.reset();
3074 }
3075
3076 void WebContentsImpl::OnMediaPlayingNotification(int64 player_cookie,
3077                                                  bool has_video,
3078                                                  bool has_audio,
3079                                                  bool is_remote) {
3080   // Ignore the videos playing remotely and don't hold the wake lock for the
3081   // screen.
3082   if (is_remote) return;
3083
3084   if (has_audio) {
3085     AddMediaPlayerEntry(player_cookie, &active_audio_players_);
3086
3087     // If we don't have audio stream monitoring, allocate the audio power save
3088     // blocker here instead of during NotifyNavigationStateChanged().
3089     if (!audio_power_save_blocker_ &&
3090         !AudioStreamMonitor::monitoring_available()) {
3091       CreateAudioPowerSaveBlocker();
3092     }
3093   }
3094
3095   if (has_video) {
3096     AddMediaPlayerEntry(player_cookie, &active_video_players_);
3097
3098     // If we're not hidden and have just created a player, create a blocker.
3099     if (!video_power_save_blocker_ && !IsHidden())
3100       CreateVideoPowerSaveBlocker();
3101   }
3102 }
3103
3104 void WebContentsImpl::OnMediaPausedNotification(int64 player_cookie) {
3105   RemoveMediaPlayerEntry(player_cookie, &active_audio_players_);
3106   RemoveMediaPlayerEntry(player_cookie, &active_video_players_);
3107   MaybeReleasePowerSaveBlockers();
3108 }
3109
3110 void WebContentsImpl::OnFirstVisuallyNonEmptyPaint() {
3111   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3112                     DidFirstVisuallyNonEmptyPaint());
3113 }
3114
3115 void WebContentsImpl::DidChangeVisibleSSLState() {
3116   if (delegate_)
3117     delegate_->VisibleSSLStateChanged(this);
3118 }
3119
3120 void WebContentsImpl::NotifyBeforeFormRepostWarningShow() {
3121   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3122                     BeforeFormRepostWarningShow());
3123 }
3124
3125 void WebContentsImpl::ActivateAndShowRepostFormWarningDialog() {
3126   Activate();
3127   if (delegate_)
3128     delegate_->ShowRepostFormWarningDialog(this);
3129 }
3130
3131 bool WebContentsImpl::HasAccessedInitialDocument() {
3132   return has_accessed_initial_document_;
3133 }
3134
3135 // Notifies the RenderWidgetHost instance about the fact that the page is
3136 // loading, or done loading.
3137 void WebContentsImpl::SetIsLoading(RenderViewHost* render_view_host,
3138                                    bool is_loading,
3139                                    bool to_different_document,
3140                                    LoadNotificationDetails* details) {
3141   if (is_loading == is_loading_)
3142     return;
3143
3144   if (!is_loading) {
3145     load_state_ = net::LoadStateWithParam(net::LOAD_STATE_IDLE,
3146                                           base::string16());
3147     load_state_host_.clear();
3148     upload_size_ = 0;
3149     upload_position_ = 0;
3150   }
3151
3152   GetRenderManager()->SetIsLoading(is_loading);
3153
3154   is_loading_ = is_loading;
3155   waiting_for_response_ = is_loading;
3156   is_load_to_different_document_ = to_different_document;
3157
3158   if (delegate_)
3159     delegate_->LoadingStateChanged(this, to_different_document);
3160   NotifyNavigationStateChanged(INVALIDATE_TYPE_LOAD);
3161
3162   std::string url = (details ? details->url.possibly_invalid_spec() : "NULL");
3163   if (is_loading) {
3164     TRACE_EVENT_ASYNC_BEGIN1("browser,navigation", "WebContentsImpl Loading",
3165                              this, "URL", url);
3166     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3167                       DidStartLoading(render_view_host));
3168   } else {
3169     TRACE_EVENT_ASYNC_END1("browser,navigation", "WebContentsImpl Loading",
3170                            this, "URL", url);
3171     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3172                       DidStopLoading(render_view_host));
3173   }
3174
3175   // TODO(avi): Remove. http://crbug.com/170921
3176   int type = is_loading ? NOTIFICATION_LOAD_START : NOTIFICATION_LOAD_STOP;
3177   NotificationDetails det = NotificationService::NoDetails();
3178   if (details)
3179       det = Details<LoadNotificationDetails>(details);
3180   NotificationService::current()->Notify(
3181       type, Source<NavigationController>(&controller_), det);
3182 }
3183
3184 void WebContentsImpl::MoveRangeSelectionExtent(const gfx::Point& extent) {
3185   RenderFrameHost* focused_frame = GetFocusedFrame();
3186   if (!focused_frame)
3187     return;
3188
3189   focused_frame->Send(new InputMsg_MoveRangeSelectionExtent(
3190       focused_frame->GetRoutingID(), extent));
3191 }
3192
3193 void WebContentsImpl::SelectRange(const gfx::Point& base,
3194                                   const gfx::Point& extent) {
3195   RenderFrameHost* focused_frame = GetFocusedFrame();
3196   if (!focused_frame)
3197     return;
3198
3199   focused_frame->Send(
3200       new InputMsg_SelectRange(focused_frame->GetRoutingID(), base, extent));
3201 }
3202
3203 void WebContentsImpl::UpdateMaxPageIDIfNecessary(RenderViewHost* rvh) {
3204   // If we are creating a RVH for a restored controller, then we need to make
3205   // sure the RenderView starts with a next_page_id_ larger than the number
3206   // of restored entries.  This must be called before the RenderView starts
3207   // navigating (to avoid a race between the browser updating max_page_id and
3208   // the renderer updating next_page_id_).  Because of this, we only call this
3209   // from CreateRenderView and allow that to notify the RenderView for us.
3210   int max_restored_page_id = controller_.GetMaxRestoredPageID();
3211   if (max_restored_page_id >
3212       GetMaxPageIDForSiteInstance(rvh->GetSiteInstance()))
3213     UpdateMaxPageIDForSiteInstance(rvh->GetSiteInstance(),
3214                                    max_restored_page_id);
3215 }
3216
3217 bool WebContentsImpl::UpdateTitleForEntry(NavigationEntryImpl* entry,
3218                                           const base::string16& title) {
3219   // For file URLs without a title, use the pathname instead. In the case of a
3220   // synthesized title, we don't want the update to count toward the "one set
3221   // per page of the title to history."
3222   base::string16 final_title;
3223   bool explicit_set;
3224   if (entry && entry->GetURL().SchemeIsFile() && title.empty()) {
3225     final_title = base::UTF8ToUTF16(entry->GetURL().ExtractFileName());
3226     explicit_set = false;  // Don't count synthetic titles toward the set limit.
3227   } else {
3228     base::TrimWhitespace(title, base::TRIM_ALL, &final_title);
3229     explicit_set = true;
3230   }
3231
3232   // If a page is created via window.open and never navigated,
3233   // there will be no navigation entry. In this situation,
3234   // |page_title_when_no_navigation_entry_| will be used for page title.
3235   if (entry) {
3236     if (final_title == entry->GetTitle())
3237       return false;  // Nothing changed, don't bother.
3238
3239     entry->SetTitle(final_title);
3240   } else {
3241     if (page_title_when_no_navigation_entry_ == final_title)
3242       return false;  // Nothing changed, don't bother.
3243
3244     page_title_when_no_navigation_entry_ = final_title;
3245   }
3246
3247   // Lastly, set the title for the view.
3248   view_->SetPageTitle(final_title);
3249
3250   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3251                     TitleWasSet(entry, explicit_set));
3252
3253   // TODO(avi): Remove. http://crbug.com/170921
3254   std::pair<NavigationEntry*, bool> details =
3255       std::make_pair(entry, explicit_set);
3256   NotificationService::current()->Notify(
3257       NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED,
3258       Source<WebContents>(this),
3259       Details<std::pair<NavigationEntry*, bool> >(&details));
3260
3261   return true;
3262 }
3263
3264 void WebContentsImpl::SendLoadProgressChanged() {
3265   loading_last_progress_update_ = base::TimeTicks::Now();
3266   double progress = 0.0;
3267   int frame_count = 0;
3268
3269   for (LoadingProgressMap::iterator it = loading_progresses_.begin();
3270        it != loading_progresses_.end();
3271        ++it) {
3272     progress += it->second;
3273     ++frame_count;
3274   }
3275   if (frame_count == 0)
3276     return;
3277   progress /= frame_count;
3278   DCHECK(progress <= 1.0);
3279
3280   if (progress <= loading_total_progress_)
3281     return;
3282   loading_total_progress_ = progress;
3283
3284   if (delegate_)
3285     delegate_->LoadProgressChanged(this, progress);
3286 }
3287
3288 void WebContentsImpl::ResetLoadProgressState() {
3289   loading_progresses_.clear();
3290   loading_total_progress_ = 0.0;
3291   loading_weak_factory_.InvalidateWeakPtrs();
3292   loading_last_progress_update_ = base::TimeTicks();
3293 }
3294
3295 void WebContentsImpl::NotifyViewSwapped(RenderViewHost* old_host,
3296                                         RenderViewHost* new_host) {
3297   // After sending out a swap notification, we need to send a disconnect
3298   // notification so that clients that pick up a pointer to |this| can NULL the
3299   // pointer.  See Bug 1230284.
3300   notify_disconnection_ = true;
3301   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3302                     RenderViewHostChanged(old_host, new_host));
3303
3304   // TODO(avi): Remove. http://crbug.com/170921
3305   std::pair<RenderViewHost*, RenderViewHost*> details =
3306       std::make_pair(old_host, new_host);
3307   NotificationService::current()->Notify(
3308       NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
3309       Source<WebContents>(this),
3310       Details<std::pair<RenderViewHost*, RenderViewHost*> >(&details));
3311
3312   // Ensure that the associated embedder gets cleared after a RenderViewHost
3313   // gets swapped, so we don't reuse the same embedder next time a
3314   // RenderViewHost is attached to this WebContents.
3315   RemoveBrowserPluginEmbedder();
3316 }
3317
3318 void WebContentsImpl::NotifyFrameSwapped(RenderFrameHost* old_host,
3319                                          RenderFrameHost* new_host) {
3320   FOR_EACH_OBSERVER(WebContentsObserver,
3321                     observers_,
3322                     RenderFrameHostChanged(old_host, new_host));
3323 }
3324
3325 // TODO(avi): Remove this entire function because this notification is already
3326 // covered by two observer functions. http://crbug.com/170921
3327 void WebContentsImpl::NotifyDisconnected() {
3328   if (!notify_disconnection_)
3329     return;
3330
3331   notify_disconnection_ = false;
3332   NotificationService::current()->Notify(
3333       NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
3334       Source<WebContents>(this),
3335       NotificationService::NoDetails());
3336 }
3337
3338 void WebContentsImpl::NotifyNavigationEntryCommitted(
3339     const LoadCommittedDetails& load_details) {
3340   FOR_EACH_OBSERVER(
3341       WebContentsObserver, observers_, NavigationEntryCommitted(load_details));
3342 }
3343
3344 bool WebContentsImpl::OnMessageReceived(RenderFrameHost* render_frame_host,
3345                                         const IPC::Message& message) {
3346   return OnMessageReceived(NULL, render_frame_host, message);
3347 }
3348
3349 const GURL& WebContentsImpl::GetMainFrameLastCommittedURL() const {
3350   return GetLastCommittedURL();
3351 }
3352
3353 void WebContentsImpl::RenderFrameCreated(RenderFrameHost* render_frame_host) {
3354   // Note this is only for subframes, the notification for the main frame
3355   // happens in RenderViewCreated.
3356   FOR_EACH_OBSERVER(WebContentsObserver,
3357                     observers_,
3358                     RenderFrameCreated(render_frame_host));
3359   SetAccessibilityModeOnFrame(accessibility_mode_, render_frame_host);
3360 }
3361
3362 void WebContentsImpl::RenderFrameDeleted(RenderFrameHost* render_frame_host) {
3363   ClearPowerSaveBlockers(render_frame_host);
3364   FOR_EACH_OBSERVER(WebContentsObserver,
3365                     observers_,
3366                     RenderFrameDeleted(render_frame_host));
3367 }
3368
3369 void WebContentsImpl::WorkerCrashed(RenderFrameHost* render_frame_host) {
3370   if (delegate_)
3371     delegate_->WorkerCrashed(this);
3372 }
3373
3374 void WebContentsImpl::ShowContextMenu(RenderFrameHost* render_frame_host,
3375                                       const ContextMenuParams& params) {
3376   ContextMenuParams context_menu_params(params);
3377   // Allow WebContentsDelegates to handle the context menu operation first.
3378   if (GetBrowserPluginGuest()) {
3379     WebContentsViewGuest* view_guest =
3380         static_cast<WebContentsViewGuest*>(GetView());
3381     context_menu_params = view_guest->ConvertContextMenuParams(params);
3382   }
3383   if (delegate_ && delegate_->HandleContextMenu(context_menu_params))
3384     return;
3385
3386   render_view_host_delegate_view_->ShowContextMenu(render_frame_host,
3387                                                    context_menu_params);
3388 }
3389
3390 void WebContentsImpl::RunJavaScriptMessage(
3391     RenderFrameHost* render_frame_host,
3392     const base::string16& message,
3393     const base::string16& default_prompt,
3394     const GURL& frame_url,
3395     JavaScriptMessageType javascript_message_type,
3396     IPC::Message* reply_msg) {
3397   // Suppress JavaScript dialogs when requested. Also suppress messages when
3398   // showing an interstitial as it's shown over the previous page and we don't
3399   // want the hidden page's dialogs to interfere with the interstitial.
3400   bool suppress_this_message =
3401       static_cast<RenderFrameHostImpl*>(render_frame_host)->is_swapped_out() ||
3402       ShowingInterstitialPage() || !delegate_ ||
3403       delegate_->ShouldSuppressDialogs(this) ||
3404       !delegate_->GetJavaScriptDialogManager(this);
3405
3406   if (!suppress_this_message) {
3407     std::string accept_lang = GetContentClient()->browser()->
3408       GetAcceptLangs(GetBrowserContext());
3409     dialog_manager_ = delegate_->GetJavaScriptDialogManager(this);
3410     dialog_manager_->RunJavaScriptDialog(
3411         this,
3412         frame_url.GetOrigin(),
3413         accept_lang,
3414         javascript_message_type,
3415         message,
3416         default_prompt,
3417         base::Bind(&WebContentsImpl::OnDialogClosed,
3418                    base::Unretained(this),
3419                    render_frame_host->GetProcess()->GetID(),
3420                    render_frame_host->GetRoutingID(),
3421                    reply_msg,
3422                    false),
3423         &suppress_this_message);
3424   }
3425
3426   if (suppress_this_message) {
3427     // If we are suppressing messages, just reply as if the user immediately
3428     // pressed "Cancel", passing true to |dialog_was_suppressed|.
3429     OnDialogClosed(render_frame_host->GetProcess()->GetID(),
3430                    render_frame_host->GetRoutingID(), reply_msg,
3431                    true, false, base::string16());
3432   }
3433
3434   // OnDialogClosed (two lines up) may have caused deletion of this object (see
3435   // http://crbug.com/288961 ). The only safe thing to do here is return.
3436 }
3437
3438 void WebContentsImpl::RunBeforeUnloadConfirm(
3439     RenderFrameHost* render_frame_host,
3440     const base::string16& message,
3441     bool is_reload,
3442     IPC::Message* reply_msg) {
3443   RenderFrameHostImpl* rfhi =
3444       static_cast<RenderFrameHostImpl*>(render_frame_host);
3445   if (delegate_)
3446     delegate_->WillRunBeforeUnloadConfirm();
3447
3448   bool suppress_this_message =
3449       rfhi->rfh_state() != RenderFrameHostImpl::STATE_DEFAULT || !delegate_ ||
3450       delegate_->ShouldSuppressDialogs(this) ||
3451       !delegate_->GetJavaScriptDialogManager(this);
3452   if (suppress_this_message) {
3453     rfhi->JavaScriptDialogClosed(reply_msg, true, base::string16(), true);
3454     return;
3455   }
3456
3457   is_showing_before_unload_dialog_ = true;
3458   dialog_manager_ = delegate_->GetJavaScriptDialogManager(this);
3459   dialog_manager_->RunBeforeUnloadDialog(
3460       this, message, is_reload,
3461       base::Bind(&WebContentsImpl::OnDialogClosed, base::Unretained(this),
3462                  render_frame_host->GetProcess()->GetID(),
3463                  render_frame_host->GetRoutingID(), reply_msg,
3464                  false));
3465 }
3466
3467 WebContents* WebContentsImpl::GetAsWebContents() {
3468   return this;
3469 }
3470
3471 bool WebContentsImpl::IsNeverVisible() {
3472   if (!delegate_)
3473     return false;
3474   return delegate_->IsNeverVisible(this);
3475 }
3476
3477 #if defined(OS_WIN)
3478 gfx::NativeViewAccessible WebContentsImpl::GetParentNativeViewAccessible() {
3479   return accessible_parent_;
3480 }
3481 #endif
3482
3483 RenderViewHostDelegateView* WebContentsImpl::GetDelegateView() {
3484   return render_view_host_delegate_view_;
3485 }
3486
3487 RendererPreferences WebContentsImpl::GetRendererPrefs(
3488     BrowserContext* browser_context) const {
3489   return renderer_preferences_;
3490 }
3491
3492 gfx::Rect WebContentsImpl::GetRootWindowResizerRect() const {
3493   if (delegate_)
3494     return delegate_->GetRootWindowResizerRect();
3495   return gfx::Rect();
3496 }
3497
3498 void WebContentsImpl::RemoveBrowserPluginEmbedder() {
3499   if (browser_plugin_embedder_)
3500     browser_plugin_embedder_.reset();
3501 }
3502
3503 void WebContentsImpl::RenderViewCreated(RenderViewHost* render_view_host) {
3504   // Don't send notifications if we are just creating a swapped-out RVH for
3505   // the opener chain.  These won't be used for view-source or WebUI, so it's
3506   // ok to return early.
3507   if (!static_cast<RenderViewHostImpl*>(render_view_host)->is_active())
3508     return;
3509
3510   if (delegate_)
3511     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
3512
3513   NotificationService::current()->Notify(
3514       NOTIFICATION_WEB_CONTENTS_RENDER_VIEW_HOST_CREATED,
3515       Source<WebContents>(this),
3516       Details<RenderViewHost>(render_view_host));
3517
3518   // When we're creating views, we're still doing initial setup, so we always
3519   // use the pending Web UI rather than any possibly existing committed one.
3520   if (GetRenderManager()->pending_web_ui())
3521     GetRenderManager()->pending_web_ui()->RenderViewCreated(render_view_host);
3522
3523   NavigationEntry* entry = controller_.GetPendingEntry();
3524   if (entry && entry->IsViewSourceMode()) {
3525     // Put the renderer in view source mode.
3526     render_view_host->Send(
3527         new ViewMsg_EnableViewSourceMode(render_view_host->GetRoutingID()));
3528   }
3529
3530   view_->RenderViewCreated(render_view_host);
3531
3532   FOR_EACH_OBSERVER(
3533       WebContentsObserver, observers_, RenderViewCreated(render_view_host));
3534
3535   // We tell the observers now instead of when the main RenderFrameHostImpl is
3536   // constructed because otherwise it would be too early (i.e. IPCs sent to the
3537   // frame would be dropped because it's not created yet).
3538   RenderFrameHost* main_frame = render_view_host->GetMainFrame();
3539   FOR_EACH_OBSERVER(
3540       WebContentsObserver, observers_, RenderFrameCreated(main_frame));
3541   SetAccessibilityModeOnFrame(accessibility_mode_, main_frame);
3542
3543   DevToolsManager::GetInstance()->RenderViewCreated(this, render_view_host);
3544 }
3545
3546 void WebContentsImpl::RenderViewReady(RenderViewHost* rvh) {
3547   if (rvh != GetRenderViewHost()) {
3548     // Don't notify the world, since this came from a renderer in the
3549     // background.
3550     return;
3551   }
3552
3553   notify_disconnection_ = true;
3554   // TODO(avi): Remove. http://crbug.com/170921
3555   NotificationService::current()->Notify(
3556       NOTIFICATION_WEB_CONTENTS_CONNECTED,
3557       Source<WebContents>(this),
3558       NotificationService::NoDetails());
3559
3560   bool was_crashed = IsCrashed();
3561   SetIsCrashed(base::TERMINATION_STATUS_STILL_RUNNING, 0);
3562
3563   // Restore the focus to the tab (otherwise the focus will be on the top
3564   // window).
3565   if (was_crashed && !FocusLocationBarByDefault() &&
3566       (!delegate_ || delegate_->ShouldFocusPageAfterCrash())) {
3567     view_->Focus();
3568   }
3569
3570   FOR_EACH_OBSERVER(WebContentsObserver, observers_, RenderViewReady());
3571 }
3572
3573 void WebContentsImpl::RenderViewTerminated(RenderViewHost* rvh,
3574                                            base::TerminationStatus status,
3575                                            int error_code) {
3576   if (rvh != GetRenderViewHost()) {
3577     // The pending page's RenderViewHost is gone.
3578     return;
3579   }
3580
3581   // Ensure fullscreen mode is exited in the |delegate_| since a crashed
3582   // renderer may not have made a clean exit.
3583   if (IsFullscreenForCurrentTab())
3584     ToggleFullscreenMode(false);
3585
3586   // Cancel any visible dialogs so they are not left dangling over the sad tab.
3587   if (dialog_manager_)
3588     dialog_manager_->CancelActiveAndPendingDialogs(this);
3589
3590   if (delegate_)
3591     delegate_->HideValidationMessage(this);
3592
3593   SetIsLoading(rvh, false, true, NULL);
3594   NotifyDisconnected();
3595   SetIsCrashed(status, error_code);
3596
3597   // Reset the loading progress. TODO(avi): What does it mean to have a
3598   // "renderer crash" when there is more than one renderer process serving a
3599   // webpage? Once this function is called at a more granular frame level, we
3600   // probably will need to more granularly reset the state here.
3601   ResetLoadProgressState();
3602   loading_frames_in_progress_ = 0;
3603
3604   FOR_EACH_OBSERVER(WebContentsObserver,
3605                     observers_,
3606                     RenderProcessGone(GetCrashedStatus()));
3607 }
3608
3609 void WebContentsImpl::RenderViewDeleted(RenderViewHost* rvh) {
3610   FOR_EACH_OBSERVER(WebContentsObserver, observers_, RenderViewDeleted(rvh));
3611 }
3612
3613 void WebContentsImpl::UpdateState(RenderViewHost* rvh,
3614                                   int32 page_id,
3615                                   const PageState& page_state) {
3616   // Ensure that this state update comes from either the active RVH or one of
3617   // the swapped out RVHs.  We don't expect to hear from any other RVHs.
3618   // TODO(nasko): This should go through RenderFrameHost.
3619   // TODO(creis): We can't update state for cross-process subframes until we
3620   // have FrameNavigationEntries.  Once we do, this should be a DCHECK.
3621   if (rvh != GetRenderViewHost() &&
3622       !GetRenderManager()->IsRVHOnSwappedOutList(
3623           static_cast<RenderViewHostImpl*>(rvh)))
3624     return;
3625
3626   // We must be prepared to handle state updates for any page, these occur
3627   // when the user is scrolling and entering form data, as well as when we're
3628   // leaving a page, in which case our state may have already been moved to
3629   // the next page. The navigation controller will look up the appropriate
3630   // NavigationEntry and update it when it is notified via the delegate.
3631
3632   int entry_index = controller_.GetEntryIndexWithPageID(
3633       rvh->GetSiteInstance(), page_id);
3634   if (entry_index < 0)
3635     return;
3636   NavigationEntry* entry = controller_.GetEntryAtIndex(entry_index);
3637
3638   if (page_state == entry->GetPageState())
3639     return;  // Nothing to update.
3640   entry->SetPageState(page_state);
3641   controller_.NotifyEntryChanged(entry, entry_index);
3642 }
3643
3644 void WebContentsImpl::UpdateTargetURL(const GURL& url) {
3645   if (delegate_)
3646     delegate_->UpdateTargetURL(this, url);
3647 }
3648
3649 void WebContentsImpl::Close(RenderViewHost* rvh) {
3650 #if defined(OS_MACOSX)
3651   // The UI may be in an event-tracking loop, such as between the
3652   // mouse-down and mouse-up in text selection or a button click.
3653   // Defer the close until after tracking is complete, so that we
3654   // don't free objects out from under the UI.
3655   // TODO(shess): This could get more fine-grained.  For instance,
3656   // closing a tab in another window while selecting text in the
3657   // current window's Omnibox should be just fine.
3658   if (view_->IsEventTracking()) {
3659     view_->CloseTabAfterEventTracking();
3660     return;
3661   }
3662 #endif
3663
3664   // Ignore this if it comes from a RenderViewHost that we aren't showing.
3665   if (delegate_ && rvh == GetRenderViewHost())
3666     delegate_->CloseContents(this);
3667 }
3668
3669 void WebContentsImpl::SwappedOut(RenderFrameHost* rfh) {
3670   if (delegate_ && rfh->GetRenderViewHost() == GetRenderViewHost())
3671     delegate_->SwappedOut(this);
3672 }
3673
3674 void WebContentsImpl::DidDeferAfterResponseStarted(
3675     const TransitionLayerData& transition_data) {
3676 #if defined(OS_ANDROID)
3677   GetWebContentsAndroid()->DidDeferAfterResponseStarted(transition_data);
3678 #endif
3679 }
3680
3681 bool WebContentsImpl::WillHandleDeferAfterResponseStarted() {
3682 #if defined(OS_ANDROID)
3683   return GetWebContentsAndroid()->WillHandleDeferAfterResponseStarted();
3684 #else
3685   return false;
3686 #endif
3687 }
3688
3689 void WebContentsImpl::RequestMove(const gfx::Rect& new_bounds) {
3690   if (delegate_ && delegate_->IsPopupOrPanel(this))
3691     delegate_->MoveContents(this, new_bounds);
3692 }
3693
3694 void WebContentsImpl::DidStartLoading(RenderFrameHost* render_frame_host,
3695                                       bool to_different_document) {
3696   SetIsLoading(render_frame_host->GetRenderViewHost(), true,
3697                to_different_document, NULL);
3698 }
3699
3700 void WebContentsImpl::DidStopLoading(RenderFrameHost* render_frame_host) {
3701   scoped_ptr<LoadNotificationDetails> details;
3702
3703   // Use the last committed entry rather than the active one, in case a
3704   // pending entry has been created.
3705   NavigationEntry* entry = controller_.GetLastCommittedEntry();
3706   Navigator* navigator = frame_tree_.root()->navigator();
3707
3708   // An entry may not exist for a stop when loading an initial blank page or
3709   // if an iframe injected by script into a blank page finishes loading.
3710   if (entry) {
3711     base::TimeDelta elapsed =
3712         base::TimeTicks::Now() - navigator->GetCurrentLoadStart();
3713
3714     details.reset(new LoadNotificationDetails(
3715         entry->GetVirtualURL(),
3716         entry->GetTransitionType(),
3717         elapsed,
3718         &controller_,
3719         controller_.GetCurrentEntryIndex()));
3720   }
3721
3722   SetIsLoading(render_frame_host->GetRenderViewHost(), false, true,
3723                details.get());
3724 }
3725
3726 void WebContentsImpl::DidCancelLoading() {
3727   controller_.DiscardNonCommittedEntries();
3728
3729   // Update the URL display.
3730   NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
3731 }
3732
3733 void WebContentsImpl::DidAccessInitialDocument() {
3734   has_accessed_initial_document_ = true;
3735
3736   // We may have left a failed browser-initiated navigation in the address bar
3737   // to let the user edit it and try again.  Clear it now that content might
3738   // show up underneath it.
3739   if (!IsLoading() && controller_.GetPendingEntry())
3740     controller_.DiscardPendingEntry();
3741
3742   // Update the URL display.
3743   NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
3744 }
3745
3746 void WebContentsImpl::DidDisownOpener(RenderFrameHost* render_frame_host) {
3747   // No action is necessary if the opener has already been cleared.
3748   if (!opener_)
3749     return;
3750
3751   // Clear our opener so that future cross-process navigations don't have an
3752   // opener assigned.
3753   RemoveDestructionObserver(opener_);
3754   opener_ = NULL;
3755
3756   // Notify all swapped out RenderViewHosts for this tab.  This is important
3757   // in case we go back to them, or if another window in those processes tries
3758   // to access window.opener.
3759   GetRenderManager()->DidDisownOpener(render_frame_host);
3760 }
3761
3762 void WebContentsImpl::DocumentOnLoadCompleted(
3763     RenderFrameHost* render_frame_host) {
3764   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3765                     DocumentOnLoadCompletedInMainFrame());
3766
3767   // TODO(avi): Remove. http://crbug.com/170921
3768   NotificationService::current()->Notify(
3769       NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
3770       Source<WebContents>(this),
3771       NotificationService::NoDetails());
3772 }
3773
3774 void WebContentsImpl::UpdateTitle(RenderFrameHost* render_frame_host,
3775                                   int32 page_id,
3776                                   const base::string16& title,
3777                                   base::i18n::TextDirection title_direction) {
3778   RenderViewHost* rvh = render_frame_host->GetRenderViewHost();
3779
3780   // If we have a title, that's a pretty good indication that we've started
3781   // getting useful data.
3782   SetNotWaitingForResponse();
3783
3784   // Try to find the navigation entry, which might not be the current one.
3785   // For example, it might be from a pending RVH for the pending entry.
3786   NavigationEntryImpl* entry = controller_.GetEntryWithPageID(
3787       rvh->GetSiteInstance(), page_id);
3788
3789   // We can handle title updates when we don't have an entry in
3790   // UpdateTitleForEntry, but only if the update is from the current RVH.
3791   // TODO(avi): Change to make decisions based on the RenderFrameHost.
3792   if (!entry && rvh != GetRenderViewHost())
3793     return;
3794
3795   // TODO(evan): make use of title_direction.
3796   // http://code.google.com/p/chromium/issues/detail?id=27094
3797   if (!UpdateTitleForEntry(entry, title))
3798     return;
3799
3800   // Broadcast notifications when the UI should be updated.
3801   if (entry == controller_.GetEntryAtOffset(0))
3802     NotifyNavigationStateChanged(INVALIDATE_TYPE_TITLE);
3803 }
3804
3805 void WebContentsImpl::UpdateEncoding(RenderFrameHost* render_frame_host,
3806                                      const std::string& encoding) {
3807   SetEncoding(encoding);
3808 }
3809
3810 void WebContentsImpl::DocumentAvailableInMainFrame(
3811     RenderViewHost* render_view_host) {
3812   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3813                     DocumentAvailableInMainFrame());
3814 }
3815 void WebContentsImpl::RouteCloseEvent(RenderViewHost* rvh) {
3816   // Tell the active RenderViewHost to run unload handlers and close, as long
3817   // as the request came from a RenderViewHost in the same BrowsingInstance.
3818   // In most cases, we receive this from a swapped out RenderViewHost.
3819   // It is possible to receive it from one that has just been swapped in,
3820   // in which case we might as well deliver the message anyway.
3821   if (rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance()))
3822     GetRenderViewHost()->ClosePage();
3823 }
3824
3825 void WebContentsImpl::RouteMessageEvent(
3826     RenderViewHost* rvh,
3827     const ViewMsg_PostMessage_Params& params) {
3828   // Only deliver the message to the active RenderViewHost if the request
3829   // came from a RenderViewHost in the same BrowsingInstance or if this
3830   // WebContents is dedicated to a browser plugin guest.
3831   // Note: This check means that an embedder could theoretically receive a
3832   // postMessage from anyone (not just its own guests). However, this is
3833   // probably not a risk for apps since other pages won't have references
3834   // to App windows.
3835   if (!rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance()) &&
3836       !GetBrowserPluginGuest() && !GetBrowserPluginEmbedder())
3837     return;
3838
3839   ViewMsg_PostMessage_Params new_params(params);
3840
3841   if (!params.message_port_ids.empty()) {
3842     MessagePortMessageFilter* message_port_message_filter =
3843         static_cast<RenderProcessHostImpl*>(GetRenderProcessHost())
3844             ->message_port_message_filter();
3845     message_port_message_filter->UpdateMessagePortsWithNewRoutes(
3846         params.message_port_ids,
3847         &new_params.new_routing_ids);
3848   }
3849
3850   // If there is a source_routing_id, translate it to the routing ID for
3851   // the equivalent swapped out RVH in the target process.  If we need
3852   // to create a swapped out RVH for the source tab, we create its opener
3853   // chain as well, since those will also be accessible to the target page.
3854   if (new_params.source_routing_id != MSG_ROUTING_NONE) {
3855     // Try to look up the WebContents for the source page.
3856     WebContentsImpl* source_contents = NULL;
3857     RenderViewHostImpl* source_rvh = RenderViewHostImpl::FromID(
3858         rvh->GetProcess()->GetID(), params.source_routing_id);
3859     if (source_rvh) {
3860       source_contents = static_cast<WebContentsImpl*>(
3861           source_rvh->GetDelegate()->GetAsWebContents());
3862     }
3863
3864     if (source_contents) {
3865       if (GetBrowserPluginGuest()) {
3866         // We create a swapped out RenderView for the embedder in the guest's
3867         // render process but we intentionally do not expose the embedder's
3868         // opener chain to it.
3869         new_params.source_routing_id =
3870             source_contents->CreateSwappedOutRenderView(GetSiteInstance());
3871       } else {
3872         new_params.source_routing_id =
3873             source_contents->CreateOpenerRenderViews(GetSiteInstance());
3874       }
3875     } else {
3876       // We couldn't find it, so don't pass a source frame.
3877       new_params.source_routing_id = MSG_ROUTING_NONE;
3878     }
3879   }
3880
3881   // In most cases, we receive this from a swapped out RenderViewHost.
3882   // It is possible to receive it from one that has just been swapped in,
3883   // in which case we might as well deliver the message anyway.
3884   Send(new ViewMsg_PostMessageEvent(GetRoutingID(), new_params));
3885 }
3886
3887 bool WebContentsImpl::AddMessageToConsole(int32 level,
3888                                           const base::string16& message,
3889                                           int32 line_no,
3890                                           const base::string16& source_id) {
3891   if (!delegate_)
3892     return false;
3893   return delegate_->AddMessageToConsole(this, level, message, line_no,
3894                                         source_id);
3895 }
3896
3897 WebPreferences WebContentsImpl::ComputeWebkitPrefs() {
3898   // We want to base the page config off of the actual URL, rather than the
3899   // virtual URL.
3900   // TODO(nasko): Investigate how to remove the GetActiveEntry usage here,
3901   // as it is deprecated and can be out of sync with GetRenderViewHost().
3902   GURL url = controller_.GetActiveEntry()
3903       ? controller_.GetActiveEntry()->GetURL() : GURL::EmptyGURL();
3904
3905   return GetRenderManager()->current_host()->ComputeWebkitPrefs(url);
3906 }
3907
3908 int WebContentsImpl::CreateSwappedOutRenderView(
3909     SiteInstance* instance) {
3910   return GetRenderManager()->CreateRenderFrame(
3911       instance, MSG_ROUTING_NONE, CREATE_RF_SWAPPED_OUT |
3912                                       CREATE_RF_FOR_MAIN_FRAME_NAVIGATION |
3913                                       CREATE_RF_HIDDEN);
3914 }
3915
3916 void WebContentsImpl::OnUserGesture() {
3917   // Notify observers.
3918   FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidGetUserGesture());
3919
3920   ResourceDispatcherHostImpl* rdh = ResourceDispatcherHostImpl::Get();
3921   if (rdh)  // NULL in unittests.
3922     rdh->OnUserGesture(this);
3923 }
3924
3925 void WebContentsImpl::OnIgnoredUIEvent() {
3926   // Notify observers.
3927   FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidGetIgnoredUIEvent());
3928 }
3929
3930 void WebContentsImpl::RendererUnresponsive(RenderViewHost* render_view_host) {
3931   // Don't show hung renderer dialog for a swapped out RVH.
3932   if (render_view_host != GetRenderViewHost())
3933     return;
3934
3935   RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(render_view_host);
3936   RenderFrameHostImpl* rfhi =
3937       static_cast<RenderFrameHostImpl*>(rvhi->GetMainFrame());
3938
3939   // Ignore renderer unresponsive event if debugger is attached to the tab
3940   // since the event may be a result of the renderer sitting on a breakpoint.
3941   // See http://crbug.com/65458
3942   if (DevToolsAgentHost::IsDebuggerAttached(this))
3943     return;
3944
3945   if (rfhi->is_waiting_for_beforeunload_ack() ||
3946       rfhi->IsWaitingForUnloadACK()) {
3947     // Hang occurred while firing the beforeunload/unload handler.
3948     // Pretend the handler fired so tab closing continues as if it had.
3949     rvhi->set_sudden_termination_allowed(true);
3950
3951     if (!GetRenderManager()->ShouldCloseTabOnUnresponsiveRenderer())
3952       return;
3953
3954     // If the tab hangs in the beforeunload/unload handler there's really
3955     // nothing we can do to recover. If the hang is in the beforeunload handler,
3956     // pretend the beforeunload listeners have all fired and allow the delegate
3957     // to continue closing; the user will not have the option of cancelling the
3958     // close. Otherwise, pretend the unload listeners have all fired and close
3959     // the tab.
3960     bool close = true;
3961     if (rfhi->is_waiting_for_beforeunload_ack() && delegate_) {
3962       delegate_->BeforeUnloadFired(this, true, &close);
3963     }
3964     if (close)
3965       Close(rvhi);
3966     return;
3967   }
3968
3969   if (!GetRenderViewHostImpl() || !GetRenderViewHostImpl()->IsRenderViewLive())
3970     return;
3971
3972   if (delegate_)
3973     delegate_->RendererUnresponsive(this);
3974 }
3975
3976 void WebContentsImpl::RendererResponsive(RenderViewHost* render_view_host) {
3977   if (delegate_)
3978     delegate_->RendererResponsive(this);
3979 }
3980
3981 void WebContentsImpl::LoadStateChanged(
3982     const GURL& url,
3983     const net::LoadStateWithParam& load_state,
3984     uint64 upload_position,
3985     uint64 upload_size) {
3986   load_state_ = load_state;
3987   upload_position_ = upload_position;
3988   upload_size_ = upload_size;
3989   load_state_host_ = net::IDNToUnicode(url.host(),
3990       GetContentClient()->browser()->GetAcceptLangs(
3991           GetBrowserContext()));
3992   if (load_state_.state == net::LOAD_STATE_READING_RESPONSE)
3993     SetNotWaitingForResponse();
3994   if (IsLoading()) {
3995     NotifyNavigationStateChanged(static_cast<InvalidateTypes>(
3996         INVALIDATE_TYPE_LOAD | INVALIDATE_TYPE_TAB));
3997   }
3998 }
3999
4000 void WebContentsImpl::BeforeUnloadFiredFromRenderManager(
4001     bool proceed, const base::TimeTicks& proceed_time,
4002     bool* proceed_to_fire_unload) {
4003   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
4004                     BeforeUnloadFired(proceed_time));
4005   if (delegate_)
4006     delegate_->BeforeUnloadFired(this, proceed, proceed_to_fire_unload);
4007   // Note: |this| might be deleted at this point.
4008 }
4009
4010 void WebContentsImpl::RenderProcessGoneFromRenderManager(
4011     RenderViewHost* render_view_host) {
4012   DCHECK(crashed_status_ != base::TERMINATION_STATUS_STILL_RUNNING);
4013   RenderViewTerminated(render_view_host, crashed_status_, crashed_error_code_);
4014 }
4015
4016 void WebContentsImpl::UpdateRenderViewSizeForRenderManager() {
4017   // TODO(brettw) this is a hack. See WebContentsView::SizeContents.
4018   gfx::Size size = GetSizeForNewRenderView();
4019   // 0x0 isn't a valid window size (minimal window size is 1x1) but it may be
4020   // here during container initialization and normal window size will be set
4021   // later. In case of tab duplication this resizing to 0x0 prevents setting
4022   // normal size later so just ignore it.
4023   if (!size.IsEmpty())
4024     view_->SizeContents(size);
4025 }
4026
4027 void WebContentsImpl::CancelModalDialogsForRenderManager() {
4028   // We need to cancel modal dialogs when doing a process swap, since the load
4029   // deferrer would prevent us from swapping out.
4030   if (dialog_manager_)
4031     dialog_manager_->CancelActiveAndPendingDialogs(this);
4032 }
4033
4034 void WebContentsImpl::NotifySwappedFromRenderManager(RenderFrameHost* old_host,
4035                                                      RenderFrameHost* new_host,
4036                                                      bool is_main_frame) {
4037   if (is_main_frame) {
4038     NotifyViewSwapped(old_host ? old_host->GetRenderViewHost() : NULL,
4039                       new_host->GetRenderViewHost());
4040
4041     // Make sure the visible RVH reflects the new delegate's preferences.
4042     if (delegate_)
4043       view_->SetOverscrollControllerEnabled(CanOverscrollContent());
4044
4045     view_->RenderViewSwappedIn(new_host->GetRenderViewHost());
4046   }
4047
4048   NotifyFrameSwapped(old_host, new_host);
4049 }
4050
4051 int WebContentsImpl::CreateOpenerRenderViewsForRenderManager(
4052     SiteInstance* instance) {
4053   if (!opener_)
4054     return MSG_ROUTING_NONE;
4055
4056   // Recursively create RenderViews for anything else in the opener chain.
4057   return opener_->CreateOpenerRenderViews(instance);
4058 }
4059
4060 int WebContentsImpl::CreateOpenerRenderViews(SiteInstance* instance) {
4061   int opener_route_id = MSG_ROUTING_NONE;
4062
4063   // If this tab has an opener, ensure it has a RenderView in the given
4064   // SiteInstance as well.
4065   if (opener_)
4066     opener_route_id = opener_->CreateOpenerRenderViews(instance);
4067
4068   // If any of the renderers (current, pending, or swapped out) for this
4069   // WebContents has the same SiteInstance, use it.
4070   if (GetRenderManager()->current_host()->GetSiteInstance() == instance)
4071     return GetRenderManager()->current_host()->GetRoutingID();
4072
4073   if (GetRenderManager()->pending_render_view_host() &&
4074       GetRenderManager()->pending_render_view_host()->GetSiteInstance() ==
4075           instance)
4076     return GetRenderManager()->pending_render_view_host()->GetRoutingID();
4077
4078   RenderViewHostImpl* rvh = GetRenderManager()->GetSwappedOutRenderViewHost(
4079       instance);
4080   if (rvh)
4081     return rvh->GetRoutingID();
4082
4083   // Create a swapped out RenderView in the given SiteInstance if none exists,
4084   // setting its opener to the given route_id.  Return the new view's route_id.
4085   return GetRenderManager()->CreateRenderFrame(
4086       instance, opener_route_id, CREATE_RF_FOR_MAIN_FRAME_NAVIGATION |
4087                                      CREATE_RF_SWAPPED_OUT | CREATE_RF_HIDDEN);
4088 }
4089
4090 NavigationControllerImpl& WebContentsImpl::GetControllerForRenderManager() {
4091   return GetController();
4092 }
4093
4094 WebUIImpl* WebContentsImpl::CreateWebUIForRenderManager(const GURL& url) {
4095   return static_cast<WebUIImpl*>(CreateWebUI(url));
4096 }
4097
4098 NavigationEntry*
4099     WebContentsImpl::GetLastCommittedNavigationEntryForRenderManager() {
4100   return controller_.GetLastCommittedEntry();
4101 }
4102
4103 bool WebContentsImpl::CreateRenderViewForRenderManager(
4104     RenderViewHost* render_view_host,
4105     int opener_route_id,
4106     int proxy_routing_id,
4107     bool for_main_frame_navigation) {
4108   TRACE_EVENT0("browser,navigation",
4109                "WebContentsImpl::CreateRenderViewForRenderManager");
4110   // Can be NULL during tests.
4111   RenderWidgetHostViewBase* rwh_view;
4112   // TODO(kenrb): RenderWidgetHostViewChildFrame special casing is temporary
4113   // until RenderWidgetHost is attached to RenderFrameHost. We need to special
4114   // case this because RWH is still a base class of RenderViewHost, and child
4115   // frame RWHVs are unique in that they do not have their own WebContents.
4116   if (!for_main_frame_navigation) {
4117     RenderWidgetHostViewChildFrame* rwh_view_child =
4118         new RenderWidgetHostViewChildFrame(render_view_host);
4119     rwh_view = rwh_view_child;
4120   } else {
4121     rwh_view = view_->CreateViewForWidget(render_view_host, false);
4122   }
4123
4124   // Now that the RenderView has been created, we need to tell it its size.
4125   if (rwh_view)
4126     rwh_view->SetSize(GetSizeForNewRenderView());
4127
4128   // Make sure we use the correct starting page_id in the new RenderView.
4129   UpdateMaxPageIDIfNecessary(render_view_host);
4130   int32 max_page_id =
4131       GetMaxPageIDForSiteInstance(render_view_host->GetSiteInstance());
4132
4133   if (!static_cast<RenderViewHostImpl*>(
4134           render_view_host)->CreateRenderView(base::string16(),
4135                                               opener_route_id,
4136                                               proxy_routing_id,
4137                                               max_page_id,
4138                                               created_with_opener_)) {
4139     return false;
4140   }
4141
4142 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
4143   // Force a ViewMsg_Resize to be sent, needed to make plugins show up on
4144   // linux. See crbug.com/83941.
4145   if (rwh_view) {
4146     if (RenderWidgetHost* render_widget_host = rwh_view->GetRenderWidgetHost())
4147       render_widget_host->WasResized();
4148   }
4149 #endif
4150
4151   return true;
4152 }
4153
4154 bool WebContentsImpl::CreateRenderFrameForRenderManager(
4155     RenderFrameHost* render_frame_host,
4156     int parent_routing_id,
4157     int proxy_routing_id) {
4158   TRACE_EVENT0("browser,navigation",
4159                "WebContentsImpl::CreateRenderFrameForRenderManager");
4160
4161   RenderFrameHostImpl* rfh =
4162       static_cast<RenderFrameHostImpl*>(render_frame_host);
4163   if (!rfh->CreateRenderFrame(parent_routing_id, proxy_routing_id))
4164     return false;
4165
4166   // TODO(nasko): When RenderWidgetHost is owned by RenderFrameHost, the passed
4167   // RenderFrameHost will have to be associated with the appropriate
4168   // RenderWidgetHostView or a new one should be created here.
4169
4170   return true;
4171 }
4172
4173 #if defined(OS_ANDROID)
4174
4175 base::android::ScopedJavaLocalRef<jobject>
4176 WebContentsImpl::GetJavaWebContents() {
4177   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
4178   return GetWebContentsAndroid()->GetJavaObject();
4179 }
4180
4181 WebContentsAndroid* WebContentsImpl::GetWebContentsAndroid() {
4182   WebContentsAndroid* web_contents_android =
4183       static_cast<WebContentsAndroid*>(GetUserData(kWebContentsAndroidKey));
4184   if (!web_contents_android) {
4185     web_contents_android = new WebContentsAndroid(this);
4186     SetUserData(kWebContentsAndroidKey, web_contents_android);
4187   }
4188   return web_contents_android;
4189 }
4190
4191 bool WebContentsImpl::CreateRenderViewForInitialEmptyDocument() {
4192   return CreateRenderViewForRenderManager(GetRenderViewHost(),
4193                                           MSG_ROUTING_NONE,
4194                                           MSG_ROUTING_NONE,
4195                                           true);
4196 }
4197
4198 #elif defined(OS_MACOSX)
4199
4200 void WebContentsImpl::SetAllowOtherViews(bool allow) {
4201   view_->SetAllowOtherViews(allow);
4202 }
4203
4204 bool WebContentsImpl::GetAllowOtherViews() {
4205   return view_->GetAllowOtherViews();
4206 }
4207
4208 #endif
4209
4210 void WebContentsImpl::OnDialogClosed(int render_process_id,
4211                                      int render_frame_id,
4212                                      IPC::Message* reply_msg,
4213                                      bool dialog_was_suppressed,
4214                                      bool success,
4215                                      const base::string16& user_input) {
4216   RenderFrameHostImpl* rfh = RenderFrameHostImpl::FromID(render_process_id,
4217                                                          render_frame_id);
4218   last_dialog_suppressed_ = dialog_was_suppressed;
4219
4220   if (is_showing_before_unload_dialog_ && !success) {
4221     // If a beforeunload dialog is canceled, we need to stop the throbber from
4222     // spinning, since we forced it to start spinning in Navigate.
4223     if (rfh)
4224       DidStopLoading(rfh);
4225     controller_.DiscardNonCommittedEntries();
4226
4227     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
4228                       BeforeUnloadDialogCancelled());
4229   }
4230
4231   is_showing_before_unload_dialog_ = false;
4232   if (rfh) {
4233     rfh->JavaScriptDialogClosed(reply_msg, success, user_input,
4234                                 dialog_was_suppressed);
4235   } else {
4236     // Don't leak the sync IPC reply if the RFH or process is gone.
4237     delete reply_msg;
4238   }
4239 }
4240
4241 void WebContentsImpl::SetEncoding(const std::string& encoding) {
4242   if (encoding == last_reported_encoding_)
4243     return;
4244   last_reported_encoding_ = encoding;
4245
4246   canonical_encoding_ = GetContentClient()->browser()->
4247       GetCanonicalEncodingNameByAliasName(encoding);
4248 }
4249
4250 bool WebContentsImpl::IsHidden() {
4251   return capturer_count_ == 0 && !should_normally_be_visible_;
4252 }
4253
4254 RenderFrameHostManager* WebContentsImpl::GetRenderManager() const {
4255   return frame_tree_.root()->render_manager();
4256 }
4257
4258 RenderViewHostImpl* WebContentsImpl::GetRenderViewHostImpl() {
4259   return static_cast<RenderViewHostImpl*>(GetRenderViewHost());
4260 }
4261
4262 BrowserPluginGuest* WebContentsImpl::GetBrowserPluginGuest() const {
4263   return browser_plugin_guest_.get();
4264 }
4265
4266 void WebContentsImpl::SetBrowserPluginGuest(BrowserPluginGuest* guest) {
4267   CHECK(!browser_plugin_guest_);
4268   browser_plugin_guest_.reset(guest);
4269 }
4270
4271 BrowserPluginEmbedder* WebContentsImpl::GetBrowserPluginEmbedder() const {
4272   return browser_plugin_embedder_.get();
4273 }
4274
4275 void WebContentsImpl::ClearPowerSaveBlockers(
4276     RenderFrameHost* render_frame_host) {
4277   RemoveAllMediaPlayerEntries(render_frame_host, &active_audio_players_);
4278   RemoveAllMediaPlayerEntries(render_frame_host, &active_video_players_);
4279   MaybeReleasePowerSaveBlockers();
4280 }
4281
4282 void WebContentsImpl::ClearAllPowerSaveBlockers() {
4283   active_audio_players_.clear();
4284   active_video_players_.clear();
4285   audio_power_save_blocker_.reset();
4286   video_power_save_blocker_.reset();
4287 }
4288
4289 gfx::Size WebContentsImpl::GetSizeForNewRenderView() {
4290   gfx::Size size;
4291   if (delegate_)
4292     size = delegate_->GetSizeForNewRenderView(this);
4293   if (size.IsEmpty())
4294     size = GetContainerBounds().size();
4295   return size;
4296 }
4297
4298 void WebContentsImpl::OnFrameRemoved(RenderFrameHost* render_frame_host) {
4299   FOR_EACH_OBSERVER(
4300       WebContentsObserver, observers_, FrameDetached(render_frame_host));
4301 }
4302
4303 void WebContentsImpl::OnPreferredSizeChanged(const gfx::Size& old_size) {
4304   if (!delegate_)
4305     return;
4306   const gfx::Size new_size = GetPreferredSize();
4307   if (new_size != old_size)
4308     delegate_->UpdatePreferredSize(this, new_size);
4309 }
4310
4311 void WebContentsImpl::AddMediaPlayerEntry(int64 player_cookie,
4312                                           ActiveMediaPlayerMap* player_map) {
4313   const uintptr_t key =
4314       reinterpret_cast<uintptr_t>(render_frame_message_source_);
4315   DCHECK(std::find((*player_map)[key].begin(),
4316                    (*player_map)[key].end(),
4317                    player_cookie) == (*player_map)[key].end());
4318   (*player_map)[key].push_back(player_cookie);
4319 }
4320
4321 void WebContentsImpl::RemoveMediaPlayerEntry(int64 player_cookie,
4322                                              ActiveMediaPlayerMap* player_map) {
4323   const uintptr_t key =
4324       reinterpret_cast<uintptr_t>(render_frame_message_source_);
4325   ActiveMediaPlayerMap::iterator it = player_map->find(key);
4326   if (it == player_map->end())
4327     return;
4328
4329   // Remove the player.
4330   PlayerList::iterator player_it =
4331       std::find(it->second.begin(), it->second.end(), player_cookie);
4332   if (player_it != it->second.end())
4333     it->second.erase(player_it);
4334
4335   // If there are no players left, remove the map entry.
4336   if (it->second.empty())
4337     player_map->erase(it);
4338 }
4339
4340 void WebContentsImpl::RemoveAllMediaPlayerEntries(
4341     RenderFrameHost* render_frame_host,
4342     ActiveMediaPlayerMap* player_map) {
4343   ActiveMediaPlayerMap::iterator it =
4344       player_map->find(reinterpret_cast<uintptr_t>(render_frame_host));
4345   if (it == player_map->end())
4346     return;
4347   player_map->erase(it);
4348 }
4349
4350 void WebContentsImpl::ResumeResponseDeferredAtStart() {
4351   FrameTreeNode* node = frame_tree_.root();
4352   node->render_manager()->ResumeResponseDeferredAtStart();
4353 }
4354
4355 void WebContentsImpl::SetForceDisableOverscrollContent(bool force_disable) {
4356   force_disable_overscroll_content_ = force_disable;
4357   if (view_)
4358     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
4359 }
4360
4361 }  // namespace content