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   bool is_main_frame = (url == GetURL());
2218
2219   DownloadManager* dlm =
2220       BrowserContext::GetDownloadManager(GetBrowserContext());
2221   if (!dlm)
2222     return;
2223   int64 post_id = -1;
2224   if (is_main_frame) {
2225     const NavigationEntry* entry = controller_.GetLastCommittedEntry();
2226     if (entry)
2227       post_id = entry->GetPostID();
2228   }
2229   scoped_ptr<DownloadUrlParameters> params(
2230       DownloadUrlParameters::FromWebContents(this, url));
2231   params->set_referrer(referrer);
2232   params->set_post_id(post_id);
2233   params->set_prefer_cache(true);
2234   if (post_id >= 0)
2235     params->set_method("POST");
2236   params->set_prompt(true);
2237   dlm->DownloadUrl(params.Pass());
2238 }
2239
2240 void WebContentsImpl::GenerateMHTML(
2241     const base::FilePath& file,
2242     const base::Callback<void(int64)>& callback) {
2243   MHTMLGenerationManager::GetInstance()->SaveMHTML(this, file, callback);
2244 }
2245
2246 const std::string& WebContentsImpl::GetContentsMimeType() const {
2247   return contents_mime_type_;
2248 }
2249
2250 bool WebContentsImpl::WillNotifyDisconnection() const {
2251   return notify_disconnection_;
2252 }
2253
2254 void WebContentsImpl::SetOverrideEncoding(const std::string& encoding) {
2255   SetEncoding(encoding);
2256   Send(new ViewMsg_SetPageEncoding(GetRoutingID(), encoding));
2257 }
2258
2259 void WebContentsImpl::ResetOverrideEncoding() {
2260   canonical_encoding_.clear();
2261   Send(new ViewMsg_ResetPageEncodingToDefault(GetRoutingID()));
2262 }
2263
2264 RendererPreferences* WebContentsImpl::GetMutableRendererPrefs() {
2265   return &renderer_preferences_;
2266 }
2267
2268 void WebContentsImpl::Close() {
2269   Close(GetRenderViewHost());
2270 }
2271
2272 void WebContentsImpl::DragSourceEndedAt(int client_x, int client_y,
2273     int screen_x, int screen_y, blink::WebDragOperation operation) {
2274   if (browser_plugin_embedder_.get())
2275     browser_plugin_embedder_->DragSourceEndedAt(client_x, client_y,
2276         screen_x, screen_y, operation);
2277   if (GetRenderViewHost())
2278     GetRenderViewHostImpl()->DragSourceEndedAt(client_x, client_y,
2279         screen_x, screen_y, operation);
2280 }
2281
2282 void WebContentsImpl::DidGetResourceResponseStart(
2283   const ResourceRequestDetails& details) {
2284   controller_.ssl_manager()->DidStartResourceResponse(details);
2285
2286   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2287                     DidGetResourceResponseStart(details));
2288
2289   // TODO(avi): Remove. http://crbug.com/170921
2290   NotificationService::current()->Notify(
2291       NOTIFICATION_RESOURCE_RESPONSE_STARTED,
2292       Source<WebContents>(this),
2293       Details<const ResourceRequestDetails>(&details));
2294 }
2295
2296 void WebContentsImpl::DidGetRedirectForResourceRequest(
2297   RenderFrameHost* render_frame_host,
2298   const ResourceRedirectDetails& details) {
2299   controller_.ssl_manager()->DidReceiveResourceRedirect(details);
2300
2301   FOR_EACH_OBSERVER(
2302       WebContentsObserver,
2303       observers_,
2304       DidGetRedirectForResourceRequest(render_frame_host, details));
2305
2306   // TODO(avi): Remove. http://crbug.com/170921
2307   NotificationService::current()->Notify(
2308       NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
2309       Source<WebContents>(this),
2310       Details<const ResourceRedirectDetails>(&details));
2311 }
2312
2313 void WebContentsImpl::SystemDragEnded() {
2314   if (GetRenderViewHost())
2315     GetRenderViewHostImpl()->DragSourceSystemDragEnded();
2316   if (delegate_)
2317     delegate_->DragEnded();
2318   if (browser_plugin_embedder_.get())
2319     browser_plugin_embedder_->SystemDragEnded();
2320 }
2321
2322 void WebContentsImpl::UserGestureDone() {
2323   OnUserGesture();
2324 }
2325
2326 void WebContentsImpl::SetClosedByUserGesture(bool value) {
2327   closed_by_user_gesture_ = value;
2328 }
2329
2330 bool WebContentsImpl::GetClosedByUserGesture() const {
2331   return closed_by_user_gesture_;
2332 }
2333
2334 void WebContentsImpl::ViewSource() {
2335   if (!delegate_)
2336     return;
2337
2338   NavigationEntry* entry = GetController().GetLastCommittedEntry();
2339   if (!entry)
2340     return;
2341
2342   delegate_->ViewSourceForTab(this, entry->GetURL());
2343 }
2344
2345 void WebContentsImpl::ViewFrameSource(const GURL& url,
2346                                       const PageState& page_state) {
2347   if (!delegate_)
2348     return;
2349
2350   delegate_->ViewSourceForFrame(this, url, page_state);
2351 }
2352
2353 int WebContentsImpl::GetMinimumZoomPercent() const {
2354   return minimum_zoom_percent_;
2355 }
2356
2357 int WebContentsImpl::GetMaximumZoomPercent() const {
2358   return maximum_zoom_percent_;
2359 }
2360
2361 gfx::Size WebContentsImpl::GetPreferredSize() const {
2362   return capturer_count_ == 0 ? preferred_size_ : preferred_size_for_capture_;
2363 }
2364
2365 bool WebContentsImpl::GotResponseToLockMouseRequest(bool allowed) {
2366   if (GetBrowserPluginGuest())
2367     return GetBrowserPluginGuest()->LockMouse(allowed);
2368
2369   return GetRenderViewHost() ?
2370       GetRenderViewHostImpl()->GotResponseToLockMouseRequest(allowed) : false;
2371 }
2372
2373 bool WebContentsImpl::HasOpener() const {
2374   return opener_ != NULL;
2375 }
2376
2377 void WebContentsImpl::DidChooseColorInColorChooser(SkColor color) {
2378   if (!color_chooser_info_.get())
2379     return;
2380   RenderFrameHost* rfh = RenderFrameHost::FromID(
2381       color_chooser_info_->render_process_id,
2382       color_chooser_info_->render_frame_id);
2383   if (!rfh)
2384     return;
2385
2386   rfh->Send(new FrameMsg_DidChooseColorResponse(
2387       rfh->GetRoutingID(), color_chooser_info_->identifier, color));
2388 }
2389
2390 void WebContentsImpl::DidEndColorChooser() {
2391   if (!color_chooser_info_.get())
2392     return;
2393   RenderFrameHost* rfh = RenderFrameHost::FromID(
2394       color_chooser_info_->render_process_id,
2395       color_chooser_info_->render_frame_id);
2396   if (!rfh)
2397     return;
2398
2399   rfh->Send(new FrameMsg_DidEndColorChooser(
2400       rfh->GetRoutingID(), color_chooser_info_->identifier));
2401   color_chooser_info_.reset();
2402 }
2403
2404 int WebContentsImpl::DownloadImage(const GURL& url,
2405                                    bool is_favicon,
2406                                    uint32_t max_bitmap_size,
2407                                    const ImageDownloadCallback& callback) {
2408   int id = StartDownload(GetMainFrame(), url, is_favicon, max_bitmap_size);
2409   image_download_map_[id] = callback;
2410   return id;
2411 }
2412
2413 bool WebContentsImpl::IsSubframe() const {
2414   return is_subframe_;
2415 }
2416
2417 void WebContentsImpl::Find(int request_id,
2418                            const base::string16& search_text,
2419                            const blink::WebFindOptions& options) {
2420   // See if a top level browser plugin handles the find request first.
2421   if (browser_plugin_embedder_ &&
2422       browser_plugin_embedder_->Find(request_id, search_text, options)) {
2423     return;
2424   }
2425   Send(new ViewMsg_Find(GetRoutingID(), request_id, search_text, options));
2426 }
2427
2428 void WebContentsImpl::StopFinding(StopFindAction action) {
2429   Send(new ViewMsg_StopFinding(GetRoutingID(), action));
2430 }
2431
2432 void WebContentsImpl::InsertCSS(const std::string& css) {
2433   GetMainFrame()->Send(new FrameMsg_CSSInsertRequest(
2434       GetMainFrame()->GetRoutingID(), css));
2435 }
2436
2437 bool WebContentsImpl::WasRecentlyAudible() {
2438   return audio_stream_monitor_.WasRecentlyAudible();
2439 }
2440
2441 void WebContentsImpl::GetManifest(const GetManifestCallback& callback) {
2442   manifest_manager_host_->GetManifest(GetMainFrame(), callback);
2443 }
2444
2445 bool WebContentsImpl::FocusLocationBarByDefault() {
2446   NavigationEntry* entry = controller_.GetVisibleEntry();
2447   if (entry && entry->GetURL() == GURL(url::kAboutBlankURL))
2448     return true;
2449   return delegate_ && delegate_->ShouldFocusLocationBarByDefault(this);
2450 }
2451
2452 void WebContentsImpl::SetFocusToLocationBar(bool select_all) {
2453   if (delegate_)
2454     delegate_->SetFocusToLocationBar(select_all);
2455 }
2456
2457 void WebContentsImpl::DidStartProvisionalLoad(
2458     RenderFrameHostImpl* render_frame_host,
2459     const GURL& validated_url,
2460     bool is_error_page,
2461     bool is_iframe_srcdoc) {
2462   // Notify observers about the start of the provisional load.
2463   FOR_EACH_OBSERVER(
2464       WebContentsObserver,
2465       observers_,
2466       DidStartProvisionalLoadForFrame(
2467           render_frame_host, validated_url, is_error_page, is_iframe_srcdoc));
2468 }
2469
2470 void WebContentsImpl::DidStartNavigationTransition(
2471     RenderFrameHostImpl* render_frame_host) {
2472 #if defined(OS_ANDROID)
2473   int render_frame_id = render_frame_host->GetRoutingID();
2474   GetWebContentsAndroid()->DidStartNavigationTransitionForFrame(
2475       render_frame_id);
2476 #endif
2477 }
2478
2479 void WebContentsImpl::DidFailProvisionalLoadWithError(
2480     RenderFrameHostImpl* render_frame_host,
2481     const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {
2482   GURL validated_url(params.url);
2483   FOR_EACH_OBSERVER(WebContentsObserver,
2484                     observers_,
2485                     DidFailProvisionalLoad(render_frame_host,
2486                                            validated_url,
2487                                            params.error_code,
2488                                            params.error_description));
2489 }
2490
2491 void WebContentsImpl::DidFailLoadWithError(
2492     RenderFrameHostImpl* render_frame_host,
2493     const GURL& url,
2494     int error_code,
2495     const base::string16& error_description) {
2496   FOR_EACH_OBSERVER(
2497       WebContentsObserver,
2498       observers_,
2499       DidFailLoad(render_frame_host, url, error_code, error_description));
2500 }
2501
2502 void WebContentsImpl::NotifyChangedNavigationState(
2503     InvalidateTypes changed_flags) {
2504   NotifyNavigationStateChanged(changed_flags);
2505 }
2506
2507 void WebContentsImpl::AboutToNavigateRenderFrame(
2508       RenderFrameHostImpl* render_frame_host) {
2509   // Notify observers that we will navigate in this RenderFrame.
2510   FOR_EACH_OBSERVER(
2511       WebContentsObserver,
2512       observers_,
2513       AboutToNavigateRenderFrame(render_frame_host));
2514 }
2515
2516 void WebContentsImpl::DidStartNavigationToPendingEntry(
2517       RenderFrameHostImpl* render_frame_host,
2518       const GURL& url,
2519       NavigationController::ReloadType reload_type) {
2520   // Notify observers about navigation.
2521   FOR_EACH_OBSERVER(
2522       WebContentsObserver,
2523       observers_,
2524       DidStartNavigationToPendingEntry(url, reload_type));
2525 }
2526
2527 void WebContentsImpl::RequestOpenURL(RenderFrameHostImpl* render_frame_host,
2528                                      const OpenURLParams& params) {
2529   WebContents* new_contents = OpenURL(params);
2530
2531   if (new_contents) {
2532     // Notify observers.
2533     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2534                       DidOpenRequestedURL(new_contents,
2535                                           render_frame_host,
2536                                           params.url,
2537                                           params.referrer,
2538                                           params.disposition,
2539                                           params.transition));
2540   }
2541 }
2542
2543 bool WebContentsImpl::ShouldPreserveAbortedURLs() {
2544   if (!delegate_)
2545     return false;
2546   return delegate_->ShouldPreserveAbortedURLs(this);
2547 }
2548
2549 void WebContentsImpl::DidCommitProvisionalLoad(
2550     RenderFrameHostImpl* render_frame_host,
2551     const GURL& url,
2552     ui::PageTransition transition_type) {
2553   // Notify observers about the commit of the provisional load.
2554   FOR_EACH_OBSERVER(WebContentsObserver,
2555                     observers_,
2556                     DidCommitProvisionalLoadForFrame(
2557                         render_frame_host, url, transition_type));
2558 }
2559
2560 void WebContentsImpl::DidNavigateMainFramePreCommit(
2561     bool navigation_is_within_page) {
2562   // Ensure fullscreen mode is exited before committing the navigation to a
2563   // different page.  The next page will not start out assuming it is in
2564   // fullscreen mode.
2565   if (navigation_is_within_page) {
2566     // No page change?  Then, the renderer and browser can remain in fullscreen.
2567     return;
2568   }
2569   if (IsFullscreenForCurrentTab())
2570     GetRenderViewHost()->ExitFullscreen();
2571   DCHECK(!IsFullscreenForCurrentTab());
2572 }
2573
2574 void WebContentsImpl::DidNavigateMainFramePostCommit(
2575     const LoadCommittedDetails& details,
2576     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
2577   if (details.is_navigation_to_different_page()) {
2578     // Clear the status bubble. This is a workaround for a bug where WebKit
2579     // doesn't let us know that the cursor left an element during a
2580     // transition (this is also why the mouse cursor remains as a hand after
2581     // clicking on a link); see bugs 1184641 and 980803. We don't want to
2582     // clear the bubble when a user navigates to a named anchor in the same
2583     // page.
2584     UpdateTargetURL(GURL());
2585   }
2586
2587   if (!details.is_in_page) {
2588     // Once the main frame is navigated, we're no longer considered to have
2589     // displayed insecure content.
2590     displayed_insecure_content_ = false;
2591     SSLManager::NotifySSLInternalStateChanged(
2592         GetController().GetBrowserContext());
2593   }
2594
2595   // Notify observers about navigation.
2596   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2597                     DidNavigateMainFrame(details, params));
2598
2599   if (delegate_)
2600     delegate_->DidNavigateMainFramePostCommit(this);
2601   view_->SetOverscrollControllerEnabled(CanOverscrollContent());
2602 }
2603
2604 void WebContentsImpl::DidNavigateAnyFramePostCommit(
2605     RenderFrameHostImpl* render_frame_host,
2606     const LoadCommittedDetails& details,
2607     const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {
2608   // Now that something has committed, we don't need to track whether the
2609   // initial page has been accessed.
2610   has_accessed_initial_document_ = false;
2611
2612   // If we navigate off the page, close all JavaScript dialogs.
2613   if (dialog_manager_ && !details.is_in_page)
2614     dialog_manager_->CancelActiveAndPendingDialogs(this);
2615
2616   // Notify observers about navigation.
2617   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2618                     DidNavigateAnyFrame(render_frame_host, details, params));
2619 }
2620
2621 void WebContentsImpl::SetMainFrameMimeType(const std::string& mime_type) {
2622   contents_mime_type_ = mime_type;
2623 }
2624
2625 bool WebContentsImpl::CanOverscrollContent() const {
2626   // Disable overscroll when touch emulation is on. See crbug.com/369938.
2627   if (force_disable_overscroll_content_)
2628     return false;
2629
2630   if (delegate_)
2631     return delegate_->CanOverscrollContent();
2632
2633   return false;
2634 }
2635
2636 void WebContentsImpl::OnThemeColorChanged(SkColor theme_color) {
2637   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2638                     DidChangeThemeColor(theme_color));
2639 }
2640
2641 void WebContentsImpl::OnDidLoadResourceFromMemoryCache(
2642     const GURL& url,
2643     const std::string& security_info,
2644     const std::string& http_method,
2645     const std::string& mime_type,
2646     ResourceType resource_type) {
2647   base::StatsCounter cache("WebKit.CacheHit");
2648   cache.Increment();
2649
2650   // Send out a notification that we loaded a resource from our memory cache.
2651   int cert_id = 0;
2652   net::CertStatus cert_status = 0;
2653   int security_bits = -1;
2654   int connection_status = 0;
2655   SignedCertificateTimestampIDStatusList signed_certificate_timestamp_ids;
2656   DeserializeSecurityInfo(security_info, &cert_id, &cert_status,
2657                           &security_bits, &connection_status,
2658                           &signed_certificate_timestamp_ids);
2659   // TODO(alcutter,eranm): Pass signed_certificate_timestamp_ids into details
2660   LoadFromMemoryCacheDetails details(
2661       url, GetRenderProcessHost()->GetID(), cert_id, cert_status, http_method,
2662       mime_type, resource_type);
2663
2664   controller_.ssl_manager()->DidLoadFromMemoryCache(details);
2665
2666   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2667                     DidLoadResourceFromMemoryCache(details));
2668
2669   if (url.is_valid() && url.SchemeIsHTTPOrHTTPS()) {
2670     scoped_refptr<net::URLRequestContextGetter> request_context(
2671         resource_type == RESOURCE_TYPE_MEDIA ?
2672             GetBrowserContext()->GetMediaRequestContextForRenderProcess(
2673                 GetRenderProcessHost()->GetID()) :
2674             GetBrowserContext()->GetRequestContextForRenderProcess(
2675                 GetRenderProcessHost()->GetID()));
2676     BrowserThread::PostTask(
2677         BrowserThread::IO,
2678         FROM_HERE,
2679         base::Bind(&NotifyCacheOnIO, request_context, url, http_method));
2680   }
2681 }
2682
2683 void WebContentsImpl::OnDidDisplayInsecureContent() {
2684   RecordAction(base::UserMetricsAction("SSL.DisplayedInsecureContent"));
2685   displayed_insecure_content_ = true;
2686   SSLManager::NotifySSLInternalStateChanged(
2687       GetController().GetBrowserContext());
2688 }
2689
2690 void WebContentsImpl::OnDidRunInsecureContent(
2691     const std::string& security_origin, const GURL& target_url) {
2692   LOG(WARNING) << security_origin << " ran insecure content from "
2693                << target_url.possibly_invalid_spec();
2694   RecordAction(base::UserMetricsAction("SSL.RanInsecureContent"));
2695   if (EndsWith(security_origin, kDotGoogleDotCom, false))
2696     RecordAction(base::UserMetricsAction("SSL.RanInsecureContentGoogle"));
2697   controller_.ssl_manager()->DidRunInsecureContent(security_origin);
2698   displayed_insecure_content_ = true;
2699   SSLManager::NotifySSLInternalStateChanged(
2700       GetController().GetBrowserContext());
2701 }
2702
2703 void WebContentsImpl::OnDocumentLoadedInFrame() {
2704   CHECK(render_frame_message_source_);
2705   CHECK(!render_view_message_source_);
2706   RenderFrameHostImpl* rfh =
2707       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2708   FOR_EACH_OBSERVER(
2709       WebContentsObserver, observers_, DocumentLoadedInFrame(rfh));
2710 }
2711
2712 void WebContentsImpl::OnDidFinishLoad(
2713     const GURL& url) {
2714   if (!render_frame_message_source_) {
2715     RecordAction(base::UserMetricsAction("BadMessageTerminate_RVD2"));
2716     GetRenderProcessHost()->ReceivedBadMessage();
2717     return;
2718   }
2719
2720   GURL validated_url(url);
2721   RenderProcessHost* render_process_host =
2722       render_frame_message_source_->GetProcess();
2723   render_process_host->FilterURL(false, &validated_url);
2724
2725   RenderFrameHostImpl* rfh =
2726       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2727   FOR_EACH_OBSERVER(
2728       WebContentsObserver, observers_, DidFinishLoad(rfh, validated_url));
2729 }
2730
2731 void WebContentsImpl::OnDidStartLoading(bool to_different_document) {
2732   RenderFrameHostImpl* rfh =
2733       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2734   int64 render_frame_id = rfh->frame_tree_node()->frame_tree_node_id();
2735
2736   // It is possible to get multiple calls to OnDidStartLoading that don't have
2737   // corresponding calls to OnDidStopLoading:
2738   // - With "swappedout://" URLs, this happens when a RenderView gets swapped
2739   //   out for a cross-process navigation, and it turns into a placeholder for
2740   //   one being rendered in a different process.
2741   // - Also, there might be more than one RenderFrameHost sharing the same
2742   //   FrameTreeNode (and thus sharing its ID) each sending a start.
2743   // - But in the future, once clamy@ moves navigation network requests to the
2744   //   browser process, there's a good chance that callbacks about starting and
2745   //   stopping will all be handled by the browser. When that happens, there
2746   //   should no longer be a start/stop call imbalance. TODO(avi): When this
2747   //   future arrives, update this code to not allow this case.
2748   DCHECK_GE(loading_frames_in_progress_, 0);
2749   if (loading_progresses_.find(render_frame_id) == loading_progresses_.end()) {
2750     if (loading_frames_in_progress_ == 0)
2751       DidStartLoading(rfh, to_different_document);
2752     ++loading_frames_in_progress_;
2753   }
2754
2755   loading_progresses_[render_frame_id] = kMinimumLoadingProgress;
2756   SendLoadProgressChanged();
2757 }
2758
2759 void WebContentsImpl::OnDidStopLoading() {
2760   RenderFrameHostImpl* rfh =
2761       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2762   int64 render_frame_id = rfh->frame_tree_node()->frame_tree_node_id();
2763
2764   if (loading_progresses_.find(render_frame_id) != loading_progresses_.end()) {
2765     // Load stopped while we were still tracking load.  Make sure we update
2766     // progress based on this frame's completion.
2767     loading_progresses_[render_frame_id] = 1.0;
2768     SendLoadProgressChanged();
2769     // Then we clean-up our states.
2770     if (loading_total_progress_ == 1.0)
2771       ResetLoadProgressState();
2772   }
2773
2774   // TODO(japhet): This should be a DCHECK, but the pdf plugin sometimes
2775   // calls DidStopLoading() without a matching DidStartLoading().
2776   if (loading_frames_in_progress_ == 0)
2777     return;
2778   --loading_frames_in_progress_;
2779   if (loading_frames_in_progress_ == 0)
2780     DidStopLoading(rfh);
2781 }
2782
2783 void WebContentsImpl::OnDidChangeLoadProgress(double load_progress) {
2784   RenderFrameHostImpl* rfh =
2785       static_cast<RenderFrameHostImpl*>(render_frame_message_source_);
2786   int64 render_frame_id = rfh->frame_tree_node()->frame_tree_node_id();
2787
2788   loading_progresses_[render_frame_id] = load_progress;
2789
2790   // We notify progress change immediately for the first and last updates.
2791   // Also, since the message loop may be pretty busy when a page is loaded, it
2792   // might not execute a posted task in a timely manner so we make sure to
2793   // immediately send progress report if enough time has passed.
2794   base::TimeDelta min_delay =
2795       base::TimeDelta::FromMilliseconds(kMinimumDelayBetweenLoadingUpdatesMS);
2796   if (load_progress == 1.0 || loading_last_progress_update_.is_null() ||
2797       base::TimeTicks::Now() - loading_last_progress_update_ > min_delay) {
2798     // If there is a pending task to send progress, it is now obsolete.
2799     loading_weak_factory_.InvalidateWeakPtrs();
2800     SendLoadProgressChanged();
2801     if (loading_total_progress_ == 1.0)
2802       ResetLoadProgressState();
2803     return;
2804   }
2805
2806   if (loading_weak_factory_.HasWeakPtrs())
2807     return;
2808
2809   base::MessageLoop::current()->PostDelayedTask(
2810       FROM_HERE,
2811       base::Bind(&WebContentsImpl::SendLoadProgressChanged,
2812                  loading_weak_factory_.GetWeakPtr()),
2813       min_delay);
2814 }
2815
2816 void WebContentsImpl::OnGoToEntryAtOffset(int offset) {
2817   if (!delegate_ || delegate_->OnGoToEntryOffset(offset))
2818     controller_.GoToOffset(offset);
2819 }
2820
2821 void WebContentsImpl::OnUpdateZoomLimits(int minimum_percent,
2822                                          int maximum_percent) {
2823   minimum_zoom_percent_ = minimum_percent;
2824   maximum_zoom_percent_ = maximum_percent;
2825 }
2826
2827 void WebContentsImpl::OnEnumerateDirectory(int request_id,
2828                                            const base::FilePath& path) {
2829   if (!delegate_)
2830     return;
2831
2832   ChildProcessSecurityPolicyImpl* policy =
2833       ChildProcessSecurityPolicyImpl::GetInstance();
2834   if (policy->CanReadFile(GetRenderProcessHost()->GetID(), path))
2835     delegate_->EnumerateDirectory(this, request_id, path);
2836 }
2837
2838 void WebContentsImpl::OnRegisterProtocolHandler(const std::string& protocol,
2839                                                 const GURL& url,
2840                                                 const base::string16& title,
2841                                                 bool user_gesture) {
2842   if (!delegate_)
2843     return;
2844
2845   ChildProcessSecurityPolicyImpl* policy =
2846       ChildProcessSecurityPolicyImpl::GetInstance();
2847   if (policy->IsPseudoScheme(protocol))
2848     return;
2849
2850   delegate_->RegisterProtocolHandler(this, protocol, url, user_gesture);
2851 }
2852
2853 void WebContentsImpl::OnUnregisterProtocolHandler(const std::string& protocol,
2854                                                   const GURL& url,
2855                                                   bool user_gesture) {
2856   if (!delegate_)
2857     return;
2858
2859   ChildProcessSecurityPolicyImpl* policy =
2860       ChildProcessSecurityPolicyImpl::GetInstance();
2861   if (policy->IsPseudoScheme(protocol))
2862     return;
2863
2864   delegate_->UnregisterProtocolHandler(this, protocol, url, user_gesture);
2865 }
2866
2867 void WebContentsImpl::OnFindReply(int request_id,
2868                                   int number_of_matches,
2869                                   const gfx::Rect& selection_rect,
2870                                   int active_match_ordinal,
2871                                   bool final_update) {
2872   if (delegate_) {
2873     delegate_->FindReply(this, request_id, number_of_matches, selection_rect,
2874                          active_match_ordinal, final_update);
2875   }
2876 }
2877
2878 #if defined(OS_ANDROID)
2879 void WebContentsImpl::OnFindMatchRectsReply(
2880     int version,
2881     const std::vector<gfx::RectF>& rects,
2882     const gfx::RectF& active_rect) {
2883   if (delegate_)
2884     delegate_->FindMatchRectsReply(this, version, rects, active_rect);
2885 }
2886
2887 void WebContentsImpl::OnOpenDateTimeDialog(
2888     const ViewHostMsg_DateTimeDialogValue_Params& value) {
2889   date_time_chooser_->ShowDialog(GetTopLevelNativeWindow(),
2890                                  GetRenderViewHost(),
2891                                  value.dialog_type,
2892                                  value.dialog_value,
2893                                  value.minimum,
2894                                  value.maximum,
2895                                  value.step,
2896                                  value.suggestions);
2897 }
2898 #endif
2899
2900 void WebContentsImpl::OnDomOperationResponse(const std::string& json_string,
2901                                              int automation_id) {
2902   DomOperationNotificationDetails details(json_string, automation_id);
2903   NotificationService::current()->Notify(
2904       NOTIFICATION_DOM_OPERATION_RESPONSE,
2905       Source<WebContents>(this),
2906       Details<DomOperationNotificationDetails>(&details));
2907 }
2908
2909 void WebContentsImpl::OnAppCacheAccessed(const GURL& manifest_url,
2910                                          bool blocked_by_policy) {
2911   // Notify observers about navigation.
2912   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2913                     AppCacheAccessed(manifest_url, blocked_by_policy));
2914 }
2915
2916 void WebContentsImpl::OnOpenColorChooser(
2917     int color_chooser_id,
2918     SkColor color,
2919     const std::vector<ColorSuggestion>& suggestions) {
2920   ColorChooser* new_color_chooser = delegate_ ?
2921       delegate_->OpenColorChooser(this, color, suggestions) :
2922       NULL;
2923   if (!new_color_chooser)
2924     return;
2925   if (color_chooser_info_.get())
2926     color_chooser_info_->chooser->End();
2927
2928   color_chooser_info_.reset(new ColorChooserInfo(
2929       render_frame_message_source_->GetProcess()->GetID(),
2930       render_frame_message_source_->GetRoutingID(),
2931       new_color_chooser,
2932       color_chooser_id));
2933 }
2934
2935 void WebContentsImpl::OnEndColorChooser(int color_chooser_id) {
2936   if (color_chooser_info_ &&
2937       color_chooser_id == color_chooser_info_->identifier)
2938     color_chooser_info_->chooser->End();
2939 }
2940
2941 void WebContentsImpl::OnSetSelectedColorInColorChooser(int color_chooser_id,
2942                                                        SkColor color) {
2943   if (color_chooser_info_ &&
2944       color_chooser_id == color_chooser_info_->identifier)
2945     color_chooser_info_->chooser->SetSelectedColor(color);
2946 }
2947
2948 // This exists for render views that don't have a WebUI, but do have WebUI
2949 // bindings enabled.
2950 void WebContentsImpl::OnWebUISend(const GURL& source_url,
2951                                   const std::string& name,
2952                                   const base::ListValue& args) {
2953   if (delegate_)
2954     delegate_->WebUISend(this, source_url, name, args);
2955 }
2956
2957 #if defined(ENABLE_PLUGINS)
2958 void WebContentsImpl::OnPepperPluginHung(int plugin_child_id,
2959                                          const base::FilePath& path,
2960                                          bool is_hung) {
2961   UMA_HISTOGRAM_COUNTS("Pepper.PluginHung", 1);
2962
2963   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2964                     PluginHungStatusChanged(plugin_child_id, path, is_hung));
2965 }
2966
2967 void WebContentsImpl::OnPluginCrashed(const base::FilePath& plugin_path,
2968                                       base::ProcessId plugin_pid) {
2969   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
2970                     PluginCrashed(plugin_path, plugin_pid));
2971 }
2972
2973 void WebContentsImpl::OnRequestPpapiBrokerPermission(
2974     int routing_id,
2975     const GURL& url,
2976     const base::FilePath& plugin_path) {
2977   if (!delegate_) {
2978     OnPpapiBrokerPermissionResult(routing_id, false);
2979     return;
2980   }
2981
2982   if (!delegate_->RequestPpapiBrokerPermission(
2983       this, url, plugin_path,
2984       base::Bind(&WebContentsImpl::OnPpapiBrokerPermissionResult,
2985                  base::Unretained(this), routing_id))) {
2986     NOTIMPLEMENTED();
2987     OnPpapiBrokerPermissionResult(routing_id, false);
2988   }
2989 }
2990
2991 void WebContentsImpl::OnPpapiBrokerPermissionResult(int routing_id,
2992                                                     bool result) {
2993   Send(new ViewMsg_PpapiBrokerPermissionResult(routing_id, result));
2994 }
2995
2996 void WebContentsImpl::OnBrowserPluginMessage(const IPC::Message& message) {
2997   // This creates a BrowserPluginEmbedder, which handles all the BrowserPlugin
2998   // specific messages for this WebContents. This means that any message from
2999   // a BrowserPlugin prior to this will be ignored.
3000   // For more info, see comment above classes BrowserPluginEmbedder and
3001   // BrowserPluginGuest.
3002   CHECK(!browser_plugin_embedder_.get());
3003   browser_plugin_embedder_.reset(BrowserPluginEmbedder::Create(this));
3004   browser_plugin_embedder_->OnMessageReceived(message);
3005 }
3006 #endif  // defined(ENABLE_PLUGINS)
3007
3008 void WebContentsImpl::OnDidDownloadImage(
3009     int id,
3010     int http_status_code,
3011     const GURL& image_url,
3012     const std::vector<SkBitmap>& bitmaps,
3013     const std::vector<gfx::Size>& original_bitmap_sizes) {
3014   if (bitmaps.size() != original_bitmap_sizes.size())
3015     return;
3016
3017   ImageDownloadMap::iterator iter = image_download_map_.find(id);
3018   if (iter == image_download_map_.end()) {
3019     // Currently WebContents notifies us of ANY downloads so that it is
3020     // possible to get here.
3021     return;
3022   }
3023   if (!iter->second.is_null()) {
3024     iter->second.Run(
3025         id, http_status_code, image_url, bitmaps, original_bitmap_sizes);
3026   }
3027   image_download_map_.erase(id);
3028 }
3029
3030 void WebContentsImpl::OnUpdateFaviconURL(
3031     const std::vector<FaviconURL>& candidates) {
3032   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3033                     DidUpdateFaviconURL(candidates));
3034 }
3035
3036 void WebContentsImpl::CreateAudioPowerSaveBlocker() {
3037   // ChromeOS has its own way of handling power save blocks for media.
3038 #if !defined(OS_CHROMEOS)
3039   DCHECK(!audio_power_save_blocker_);
3040   audio_power_save_blocker_ = PowerSaveBlocker::Create(
3041       PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension, "Playing Audio");
3042 #endif
3043 }
3044
3045 void WebContentsImpl::CreateVideoPowerSaveBlocker() {
3046   // ChromeOS has its own way of handling power save blocks for media.
3047 #if !defined(OS_CHROMEOS)
3048   DCHECK(!video_power_save_blocker_);
3049   DCHECK(!active_video_players_.empty());
3050   video_power_save_blocker_ = PowerSaveBlocker::Create(
3051       PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep, "Playing Video");
3052 #if defined(OS_ANDROID)
3053   static_cast<PowerSaveBlockerImpl*>(video_power_save_blocker_.get())
3054       ->InitDisplaySleepBlocker(GetView()->GetNativeView());
3055 #endif
3056 #endif
3057 }
3058
3059 void WebContentsImpl::MaybeReleasePowerSaveBlockers() {
3060   // If there are no more audio players and we don't have audio stream
3061   // monitoring, release the audio power save blocker here instead of during
3062   // NotifyNavigationStateChanged().
3063   if (active_audio_players_.empty() &&
3064       !AudioStreamMonitor::monitoring_available()) {
3065     audio_power_save_blocker_.reset();
3066   }
3067
3068   // If there are no more video players, clear the video power save blocker.
3069   if (active_video_players_.empty())
3070     video_power_save_blocker_.reset();
3071 }
3072
3073 void WebContentsImpl::OnMediaPlayingNotification(int64 player_cookie,
3074                                                  bool has_video,
3075                                                  bool has_audio,
3076                                                  bool is_remote) {
3077   // Ignore the videos playing remotely and don't hold the wake lock for the
3078   // screen.
3079   if (is_remote) return;
3080
3081   if (has_audio) {
3082     AddMediaPlayerEntry(player_cookie, &active_audio_players_);
3083
3084     // If we don't have audio stream monitoring, allocate the audio power save
3085     // blocker here instead of during NotifyNavigationStateChanged().
3086     if (!audio_power_save_blocker_ &&
3087         !AudioStreamMonitor::monitoring_available()) {
3088       CreateAudioPowerSaveBlocker();
3089     }
3090   }
3091
3092   if (has_video) {
3093     AddMediaPlayerEntry(player_cookie, &active_video_players_);
3094
3095     // If we're not hidden and have just created a player, create a blocker.
3096     if (!video_power_save_blocker_ && !IsHidden())
3097       CreateVideoPowerSaveBlocker();
3098   }
3099 }
3100
3101 void WebContentsImpl::OnMediaPausedNotification(int64 player_cookie) {
3102   RemoveMediaPlayerEntry(player_cookie, &active_audio_players_);
3103   RemoveMediaPlayerEntry(player_cookie, &active_video_players_);
3104   MaybeReleasePowerSaveBlockers();
3105 }
3106
3107 void WebContentsImpl::OnFirstVisuallyNonEmptyPaint() {
3108   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3109                     DidFirstVisuallyNonEmptyPaint());
3110 }
3111
3112 void WebContentsImpl::DidChangeVisibleSSLState() {
3113   if (delegate_)
3114     delegate_->VisibleSSLStateChanged(this);
3115 }
3116
3117 void WebContentsImpl::NotifyBeforeFormRepostWarningShow() {
3118   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3119                     BeforeFormRepostWarningShow());
3120 }
3121
3122 void WebContentsImpl::ActivateAndShowRepostFormWarningDialog() {
3123   Activate();
3124   if (delegate_)
3125     delegate_->ShowRepostFormWarningDialog(this);
3126 }
3127
3128 bool WebContentsImpl::HasAccessedInitialDocument() {
3129   return has_accessed_initial_document_;
3130 }
3131
3132 // Notifies the RenderWidgetHost instance about the fact that the page is
3133 // loading, or done loading.
3134 void WebContentsImpl::SetIsLoading(RenderViewHost* render_view_host,
3135                                    bool is_loading,
3136                                    bool to_different_document,
3137                                    LoadNotificationDetails* details) {
3138   if (is_loading == is_loading_)
3139     return;
3140
3141   if (!is_loading) {
3142     load_state_ = net::LoadStateWithParam(net::LOAD_STATE_IDLE,
3143                                           base::string16());
3144     load_state_host_.clear();
3145     upload_size_ = 0;
3146     upload_position_ = 0;
3147   }
3148
3149   GetRenderManager()->SetIsLoading(is_loading);
3150
3151   is_loading_ = is_loading;
3152   waiting_for_response_ = is_loading;
3153   is_load_to_different_document_ = to_different_document;
3154
3155   if (delegate_)
3156     delegate_->LoadingStateChanged(this, to_different_document);
3157   NotifyNavigationStateChanged(INVALIDATE_TYPE_LOAD);
3158
3159   std::string url = (details ? details->url.possibly_invalid_spec() : "NULL");
3160   if (is_loading) {
3161     TRACE_EVENT_ASYNC_BEGIN1("browser,navigation", "WebContentsImpl Loading",
3162                              this, "URL", url);
3163     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3164                       DidStartLoading(render_view_host));
3165   } else {
3166     TRACE_EVENT_ASYNC_END1("browser,navigation", "WebContentsImpl Loading",
3167                            this, "URL", url);
3168     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3169                       DidStopLoading(render_view_host));
3170   }
3171
3172   // TODO(avi): Remove. http://crbug.com/170921
3173   int type = is_loading ? NOTIFICATION_LOAD_START : NOTIFICATION_LOAD_STOP;
3174   NotificationDetails det = NotificationService::NoDetails();
3175   if (details)
3176       det = Details<LoadNotificationDetails>(details);
3177   NotificationService::current()->Notify(
3178       type, Source<NavigationController>(&controller_), det);
3179 }
3180
3181 void WebContentsImpl::MoveRangeSelectionExtent(const gfx::Point& extent) {
3182   RenderFrameHost* focused_frame = GetFocusedFrame();
3183   if (!focused_frame)
3184     return;
3185
3186   focused_frame->Send(new InputMsg_MoveRangeSelectionExtent(
3187       focused_frame->GetRoutingID(), extent));
3188 }
3189
3190 void WebContentsImpl::SelectRange(const gfx::Point& base,
3191                                   const gfx::Point& extent) {
3192   RenderFrameHost* focused_frame = GetFocusedFrame();
3193   if (!focused_frame)
3194     return;
3195
3196   focused_frame->Send(
3197       new InputMsg_SelectRange(focused_frame->GetRoutingID(), base, extent));
3198 }
3199
3200 void WebContentsImpl::UpdateMaxPageIDIfNecessary(RenderViewHost* rvh) {
3201   // If we are creating a RVH for a restored controller, then we need to make
3202   // sure the RenderView starts with a next_page_id_ larger than the number
3203   // of restored entries.  This must be called before the RenderView starts
3204   // navigating (to avoid a race between the browser updating max_page_id and
3205   // the renderer updating next_page_id_).  Because of this, we only call this
3206   // from CreateRenderView and allow that to notify the RenderView for us.
3207   int max_restored_page_id = controller_.GetMaxRestoredPageID();
3208   if (max_restored_page_id >
3209       GetMaxPageIDForSiteInstance(rvh->GetSiteInstance()))
3210     UpdateMaxPageIDForSiteInstance(rvh->GetSiteInstance(),
3211                                    max_restored_page_id);
3212 }
3213
3214 bool WebContentsImpl::UpdateTitleForEntry(NavigationEntryImpl* entry,
3215                                           const base::string16& title) {
3216   // For file URLs without a title, use the pathname instead. In the case of a
3217   // synthesized title, we don't want the update to count toward the "one set
3218   // per page of the title to history."
3219   base::string16 final_title;
3220   bool explicit_set;
3221   if (entry && entry->GetURL().SchemeIsFile() && title.empty()) {
3222     final_title = base::UTF8ToUTF16(entry->GetURL().ExtractFileName());
3223     explicit_set = false;  // Don't count synthetic titles toward the set limit.
3224   } else {
3225     base::TrimWhitespace(title, base::TRIM_ALL, &final_title);
3226     explicit_set = true;
3227   }
3228
3229   // If a page is created via window.open and never navigated,
3230   // there will be no navigation entry. In this situation,
3231   // |page_title_when_no_navigation_entry_| will be used for page title.
3232   if (entry) {
3233     if (final_title == entry->GetTitle())
3234       return false;  // Nothing changed, don't bother.
3235
3236     entry->SetTitle(final_title);
3237   } else {
3238     if (page_title_when_no_navigation_entry_ == final_title)
3239       return false;  // Nothing changed, don't bother.
3240
3241     page_title_when_no_navigation_entry_ = final_title;
3242   }
3243
3244   // Lastly, set the title for the view.
3245   view_->SetPageTitle(final_title);
3246
3247   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3248                     TitleWasSet(entry, explicit_set));
3249
3250   // TODO(avi): Remove. http://crbug.com/170921
3251   std::pair<NavigationEntry*, bool> details =
3252       std::make_pair(entry, explicit_set);
3253   NotificationService::current()->Notify(
3254       NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED,
3255       Source<WebContents>(this),
3256       Details<std::pair<NavigationEntry*, bool> >(&details));
3257
3258   return true;
3259 }
3260
3261 void WebContentsImpl::SendLoadProgressChanged() {
3262   loading_last_progress_update_ = base::TimeTicks::Now();
3263   double progress = 0.0;
3264   int frame_count = 0;
3265
3266   for (LoadingProgressMap::iterator it = loading_progresses_.begin();
3267        it != loading_progresses_.end();
3268        ++it) {
3269     progress += it->second;
3270     ++frame_count;
3271   }
3272   if (frame_count == 0)
3273     return;
3274   progress /= frame_count;
3275   DCHECK(progress <= 1.0);
3276
3277   if (progress <= loading_total_progress_)
3278     return;
3279   loading_total_progress_ = progress;
3280
3281   if (delegate_)
3282     delegate_->LoadProgressChanged(this, progress);
3283 }
3284
3285 void WebContentsImpl::ResetLoadProgressState() {
3286   loading_progresses_.clear();
3287   loading_total_progress_ = 0.0;
3288   loading_weak_factory_.InvalidateWeakPtrs();
3289   loading_last_progress_update_ = base::TimeTicks();
3290 }
3291
3292 void WebContentsImpl::NotifyViewSwapped(RenderViewHost* old_host,
3293                                         RenderViewHost* new_host) {
3294   // After sending out a swap notification, we need to send a disconnect
3295   // notification so that clients that pick up a pointer to |this| can NULL the
3296   // pointer.  See Bug 1230284.
3297   notify_disconnection_ = true;
3298   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3299                     RenderViewHostChanged(old_host, new_host));
3300
3301   // TODO(avi): Remove. http://crbug.com/170921
3302   std::pair<RenderViewHost*, RenderViewHost*> details =
3303       std::make_pair(old_host, new_host);
3304   NotificationService::current()->Notify(
3305       NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
3306       Source<WebContents>(this),
3307       Details<std::pair<RenderViewHost*, RenderViewHost*> >(&details));
3308
3309   // Ensure that the associated embedder gets cleared after a RenderViewHost
3310   // gets swapped, so we don't reuse the same embedder next time a
3311   // RenderViewHost is attached to this WebContents.
3312   RemoveBrowserPluginEmbedder();
3313 }
3314
3315 void WebContentsImpl::NotifyFrameSwapped(RenderFrameHost* old_host,
3316                                          RenderFrameHost* new_host) {
3317   FOR_EACH_OBSERVER(WebContentsObserver,
3318                     observers_,
3319                     RenderFrameHostChanged(old_host, new_host));
3320 }
3321
3322 // TODO(avi): Remove this entire function because this notification is already
3323 // covered by two observer functions. http://crbug.com/170921
3324 void WebContentsImpl::NotifyDisconnected() {
3325   if (!notify_disconnection_)
3326     return;
3327
3328   notify_disconnection_ = false;
3329   NotificationService::current()->Notify(
3330       NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
3331       Source<WebContents>(this),
3332       NotificationService::NoDetails());
3333 }
3334
3335 void WebContentsImpl::NotifyNavigationEntryCommitted(
3336     const LoadCommittedDetails& load_details) {
3337   FOR_EACH_OBSERVER(
3338       WebContentsObserver, observers_, NavigationEntryCommitted(load_details));
3339 }
3340
3341 bool WebContentsImpl::OnMessageReceived(RenderFrameHost* render_frame_host,
3342                                         const IPC::Message& message) {
3343   return OnMessageReceived(NULL, render_frame_host, message);
3344 }
3345
3346 const GURL& WebContentsImpl::GetMainFrameLastCommittedURL() const {
3347   return GetLastCommittedURL();
3348 }
3349
3350 void WebContentsImpl::RenderFrameCreated(RenderFrameHost* render_frame_host) {
3351   // Note this is only for subframes, the notification for the main frame
3352   // happens in RenderViewCreated.
3353   FOR_EACH_OBSERVER(WebContentsObserver,
3354                     observers_,
3355                     RenderFrameCreated(render_frame_host));
3356   SetAccessibilityModeOnFrame(accessibility_mode_, render_frame_host);
3357 }
3358
3359 void WebContentsImpl::RenderFrameDeleted(RenderFrameHost* render_frame_host) {
3360   ClearPowerSaveBlockers(render_frame_host);
3361   FOR_EACH_OBSERVER(WebContentsObserver,
3362                     observers_,
3363                     RenderFrameDeleted(render_frame_host));
3364 }
3365
3366 void WebContentsImpl::WorkerCrashed(RenderFrameHost* render_frame_host) {
3367   if (delegate_)
3368     delegate_->WorkerCrashed(this);
3369 }
3370
3371 void WebContentsImpl::ShowContextMenu(RenderFrameHost* render_frame_host,
3372                                       const ContextMenuParams& params) {
3373   ContextMenuParams context_menu_params(params);
3374   // Allow WebContentsDelegates to handle the context menu operation first.
3375   if (GetBrowserPluginGuest()) {
3376     WebContentsViewGuest* view_guest =
3377         static_cast<WebContentsViewGuest*>(GetView());
3378     context_menu_params = view_guest->ConvertContextMenuParams(params);
3379   }
3380   if (delegate_ && delegate_->HandleContextMenu(context_menu_params))
3381     return;
3382
3383   render_view_host_delegate_view_->ShowContextMenu(render_frame_host,
3384                                                    context_menu_params);
3385 }
3386
3387 void WebContentsImpl::RunJavaScriptMessage(
3388     RenderFrameHost* render_frame_host,
3389     const base::string16& message,
3390     const base::string16& default_prompt,
3391     const GURL& frame_url,
3392     JavaScriptMessageType javascript_message_type,
3393     IPC::Message* reply_msg) {
3394   // Suppress JavaScript dialogs when requested. Also suppress messages when
3395   // showing an interstitial as it's shown over the previous page and we don't
3396   // want the hidden page's dialogs to interfere with the interstitial.
3397   bool suppress_this_message =
3398       static_cast<RenderFrameHostImpl*>(render_frame_host)->is_swapped_out() ||
3399       ShowingInterstitialPage() ||
3400       !delegate_ ||
3401       delegate_->ShouldSuppressDialogs() ||
3402       !delegate_->GetJavaScriptDialogManager();
3403
3404   if (!suppress_this_message) {
3405     std::string accept_lang = GetContentClient()->browser()->
3406       GetAcceptLangs(GetBrowserContext());
3407     dialog_manager_ = delegate_->GetJavaScriptDialogManager();
3408     dialog_manager_->RunJavaScriptDialog(
3409         this,
3410         frame_url.GetOrigin(),
3411         accept_lang,
3412         javascript_message_type,
3413         message,
3414         default_prompt,
3415         base::Bind(&WebContentsImpl::OnDialogClosed,
3416                    base::Unretained(this),
3417                    render_frame_host->GetProcess()->GetID(),
3418                    render_frame_host->GetRoutingID(),
3419                    reply_msg,
3420                    false),
3421         &suppress_this_message);
3422   }
3423
3424   if (suppress_this_message) {
3425     // If we are suppressing messages, just reply as if the user immediately
3426     // pressed "Cancel", passing true to |dialog_was_suppressed|.
3427     OnDialogClosed(render_frame_host->GetProcess()->GetID(),
3428                    render_frame_host->GetRoutingID(), reply_msg,
3429                    true, false, base::string16());
3430   }
3431
3432   // OnDialogClosed (two lines up) may have caused deletion of this object (see
3433   // http://crbug.com/288961 ). The only safe thing to do here is return.
3434 }
3435
3436 void WebContentsImpl::RunBeforeUnloadConfirm(
3437     RenderFrameHost* render_frame_host,
3438     const base::string16& message,
3439     bool is_reload,
3440     IPC::Message* reply_msg) {
3441   RenderFrameHostImpl* rfhi =
3442       static_cast<RenderFrameHostImpl*>(render_frame_host);
3443   if (delegate_)
3444     delegate_->WillRunBeforeUnloadConfirm();
3445
3446   bool suppress_this_message =
3447       rfhi->rfh_state() != RenderFrameHostImpl::STATE_DEFAULT ||
3448       !delegate_ ||
3449       delegate_->ShouldSuppressDialogs() ||
3450       !delegate_->GetJavaScriptDialogManager();
3451   if (suppress_this_message) {
3452     rfhi->JavaScriptDialogClosed(reply_msg, true, base::string16(), true);
3453     return;
3454   }
3455
3456   is_showing_before_unload_dialog_ = true;
3457   dialog_manager_ = delegate_->GetJavaScriptDialogManager();
3458   dialog_manager_->RunBeforeUnloadDialog(
3459       this, message, is_reload,
3460       base::Bind(&WebContentsImpl::OnDialogClosed, base::Unretained(this),
3461                  render_frame_host->GetProcess()->GetID(),
3462                  render_frame_host->GetRoutingID(), reply_msg,
3463                  false));
3464 }
3465
3466 WebContents* WebContentsImpl::GetAsWebContents() {
3467   return this;
3468 }
3469
3470 bool WebContentsImpl::IsNeverVisible() {
3471   if (!delegate_)
3472     return false;
3473   return delegate_->IsNeverVisible(this);
3474 }
3475
3476 #if defined(OS_WIN)
3477 gfx::NativeViewAccessible WebContentsImpl::GetParentNativeViewAccessible() {
3478   return accessible_parent_;
3479 }
3480 #endif
3481
3482 RenderViewHostDelegateView* WebContentsImpl::GetDelegateView() {
3483   return render_view_host_delegate_view_;
3484 }
3485
3486 RendererPreferences WebContentsImpl::GetRendererPrefs(
3487     BrowserContext* browser_context) const {
3488   return renderer_preferences_;
3489 }
3490
3491 gfx::Rect WebContentsImpl::GetRootWindowResizerRect() const {
3492   if (delegate_)
3493     return delegate_->GetRootWindowResizerRect();
3494   return gfx::Rect();
3495 }
3496
3497 void WebContentsImpl::RemoveBrowserPluginEmbedder() {
3498   if (browser_plugin_embedder_)
3499     browser_plugin_embedder_.reset();
3500 }
3501
3502 void WebContentsImpl::RenderViewCreated(RenderViewHost* render_view_host) {
3503   // Don't send notifications if we are just creating a swapped-out RVH for
3504   // the opener chain.  These won't be used for view-source or WebUI, so it's
3505   // ok to return early.
3506   if (!static_cast<RenderViewHostImpl*>(render_view_host)->is_active())
3507     return;
3508
3509   if (delegate_)
3510     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
3511
3512   NotificationService::current()->Notify(
3513       NOTIFICATION_WEB_CONTENTS_RENDER_VIEW_HOST_CREATED,
3514       Source<WebContents>(this),
3515       Details<RenderViewHost>(render_view_host));
3516
3517   // When we're creating views, we're still doing initial setup, so we always
3518   // use the pending Web UI rather than any possibly existing committed one.
3519   if (GetRenderManager()->pending_web_ui())
3520     GetRenderManager()->pending_web_ui()->RenderViewCreated(render_view_host);
3521
3522   NavigationEntry* entry = controller_.GetPendingEntry();
3523   if (entry && entry->IsViewSourceMode()) {
3524     // Put the renderer in view source mode.
3525     render_view_host->Send(
3526         new ViewMsg_EnableViewSourceMode(render_view_host->GetRoutingID()));
3527   }
3528
3529   view_->RenderViewCreated(render_view_host);
3530
3531   FOR_EACH_OBSERVER(
3532       WebContentsObserver, observers_, RenderViewCreated(render_view_host));
3533
3534   // We tell the observers now instead of when the main RenderFrameHostImpl is
3535   // constructed because otherwise it would be too early (i.e. IPCs sent to the
3536   // frame would be dropped because it's not created yet).
3537   RenderFrameHost* main_frame = render_view_host->GetMainFrame();
3538   FOR_EACH_OBSERVER(
3539       WebContentsObserver, observers_, RenderFrameCreated(main_frame));
3540   SetAccessibilityModeOnFrame(accessibility_mode_, main_frame);
3541
3542   DevToolsManager::GetInstance()->RenderViewCreated(this, render_view_host);
3543 }
3544
3545 void WebContentsImpl::RenderViewReady(RenderViewHost* rvh) {
3546   if (rvh != GetRenderViewHost()) {
3547     // Don't notify the world, since this came from a renderer in the
3548     // background.
3549     return;
3550   }
3551
3552   notify_disconnection_ = true;
3553   // TODO(avi): Remove. http://crbug.com/170921
3554   NotificationService::current()->Notify(
3555       NOTIFICATION_WEB_CONTENTS_CONNECTED,
3556       Source<WebContents>(this),
3557       NotificationService::NoDetails());
3558
3559   bool was_crashed = IsCrashed();
3560   SetIsCrashed(base::TERMINATION_STATUS_STILL_RUNNING, 0);
3561
3562   // Restore the focus to the tab (otherwise the focus will be on the top
3563   // window).
3564   if (was_crashed && !FocusLocationBarByDefault() &&
3565       (!delegate_ || delegate_->ShouldFocusPageAfterCrash())) {
3566     view_->Focus();
3567   }
3568
3569   FOR_EACH_OBSERVER(WebContentsObserver, observers_, RenderViewReady());
3570 }
3571
3572 void WebContentsImpl::RenderViewTerminated(RenderViewHost* rvh,
3573                                            base::TerminationStatus status,
3574                                            int error_code) {
3575   if (rvh != GetRenderViewHost()) {
3576     // The pending page's RenderViewHost is gone.
3577     return;
3578   }
3579
3580   // Ensure fullscreen mode is exited in the |delegate_| since a crashed
3581   // renderer may not have made a clean exit.
3582   if (IsFullscreenForCurrentTab())
3583     ToggleFullscreenMode(false);
3584
3585   // Cancel any visible dialogs so they are not left dangling over the sad tab.
3586   if (dialog_manager_)
3587     dialog_manager_->CancelActiveAndPendingDialogs(this);
3588
3589   if (delegate_)
3590     delegate_->HideValidationMessage(this);
3591
3592   SetIsLoading(rvh, false, true, NULL);
3593   NotifyDisconnected();
3594   SetIsCrashed(status, error_code);
3595
3596   // Reset the loading progress. TODO(avi): What does it mean to have a
3597   // "renderer crash" when there is more than one renderer process serving a
3598   // webpage? Once this function is called at a more granular frame level, we
3599   // probably will need to more granularly reset the state here.
3600   ResetLoadProgressState();
3601   loading_frames_in_progress_ = 0;
3602
3603   FOR_EACH_OBSERVER(WebContentsObserver,
3604                     observers_,
3605                     RenderProcessGone(GetCrashedStatus()));
3606 }
3607
3608 void WebContentsImpl::RenderViewDeleted(RenderViewHost* rvh) {
3609   FOR_EACH_OBSERVER(WebContentsObserver, observers_, RenderViewDeleted(rvh));
3610 }
3611
3612 void WebContentsImpl::UpdateState(RenderViewHost* rvh,
3613                                   int32 page_id,
3614                                   const PageState& page_state) {
3615   // Ensure that this state update comes from either the active RVH or one of
3616   // the swapped out RVHs.  We don't expect to hear from any other RVHs.
3617   // TODO(nasko): This should go through RenderFrameHost.
3618   // TODO(creis): We can't update state for cross-process subframes until we
3619   // have FrameNavigationEntries.  Once we do, this should be a DCHECK.
3620   if (rvh != GetRenderViewHost() &&
3621       !GetRenderManager()->IsRVHOnSwappedOutList(
3622           static_cast<RenderViewHostImpl*>(rvh)))
3623     return;
3624
3625   // We must be prepared to handle state updates for any page, these occur
3626   // when the user is scrolling and entering form data, as well as when we're
3627   // leaving a page, in which case our state may have already been moved to
3628   // the next page. The navigation controller will look up the appropriate
3629   // NavigationEntry and update it when it is notified via the delegate.
3630
3631   int entry_index = controller_.GetEntryIndexWithPageID(
3632       rvh->GetSiteInstance(), page_id);
3633   if (entry_index < 0)
3634     return;
3635   NavigationEntry* entry = controller_.GetEntryAtIndex(entry_index);
3636
3637   if (page_state == entry->GetPageState())
3638     return;  // Nothing to update.
3639   entry->SetPageState(page_state);
3640   controller_.NotifyEntryChanged(entry, entry_index);
3641 }
3642
3643 void WebContentsImpl::UpdateTargetURL(const GURL& url) {
3644   if (delegate_)
3645     delegate_->UpdateTargetURL(this, url);
3646 }
3647
3648 void WebContentsImpl::Close(RenderViewHost* rvh) {
3649 #if defined(OS_MACOSX)
3650   // The UI may be in an event-tracking loop, such as between the
3651   // mouse-down and mouse-up in text selection or a button click.
3652   // Defer the close until after tracking is complete, so that we
3653   // don't free objects out from under the UI.
3654   // TODO(shess): This could get more fine-grained.  For instance,
3655   // closing a tab in another window while selecting text in the
3656   // current window's Omnibox should be just fine.
3657   if (view_->IsEventTracking()) {
3658     view_->CloseTabAfterEventTracking();
3659     return;
3660   }
3661 #endif
3662
3663   // Ignore this if it comes from a RenderViewHost that we aren't showing.
3664   if (delegate_ && rvh == GetRenderViewHost())
3665     delegate_->CloseContents(this);
3666 }
3667
3668 void WebContentsImpl::SwappedOut(RenderFrameHost* rfh) {
3669   if (delegate_ && rfh->GetRenderViewHost() == GetRenderViewHost())
3670     delegate_->SwappedOut(this);
3671 }
3672
3673 void WebContentsImpl::DidDeferAfterResponseStarted(
3674     const TransitionLayerData& transition_data) {
3675 #if defined(OS_ANDROID)
3676   GetWebContentsAndroid()->DidDeferAfterResponseStarted(transition_data);
3677 #endif
3678 }
3679
3680 bool WebContentsImpl::WillHandleDeferAfterResponseStarted() {
3681 #if defined(OS_ANDROID)
3682   return GetWebContentsAndroid()->WillHandleDeferAfterResponseStarted();
3683 #else
3684   return false;
3685 #endif
3686 }
3687
3688 void WebContentsImpl::RequestMove(const gfx::Rect& new_bounds) {
3689   if (delegate_ && delegate_->IsPopupOrPanel(this))
3690     delegate_->MoveContents(this, new_bounds);
3691 }
3692
3693 void WebContentsImpl::DidStartLoading(RenderFrameHost* render_frame_host,
3694                                       bool to_different_document) {
3695   SetIsLoading(render_frame_host->GetRenderViewHost(), true,
3696                to_different_document, NULL);
3697 }
3698
3699 void WebContentsImpl::DidStopLoading(RenderFrameHost* render_frame_host) {
3700   scoped_ptr<LoadNotificationDetails> details;
3701
3702   // Use the last committed entry rather than the active one, in case a
3703   // pending entry has been created.
3704   NavigationEntry* entry = controller_.GetLastCommittedEntry();
3705   Navigator* navigator = frame_tree_.root()->navigator();
3706
3707   // An entry may not exist for a stop when loading an initial blank page or
3708   // if an iframe injected by script into a blank page finishes loading.
3709   if (entry) {
3710     base::TimeDelta elapsed =
3711         base::TimeTicks::Now() - navigator->GetCurrentLoadStart();
3712
3713     details.reset(new LoadNotificationDetails(
3714         entry->GetVirtualURL(),
3715         entry->GetTransitionType(),
3716         elapsed,
3717         &controller_,
3718         controller_.GetCurrentEntryIndex()));
3719   }
3720
3721   SetIsLoading(render_frame_host->GetRenderViewHost(), false, true,
3722                details.get());
3723 }
3724
3725 void WebContentsImpl::DidCancelLoading() {
3726   controller_.DiscardNonCommittedEntries();
3727
3728   // Update the URL display.
3729   NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
3730 }
3731
3732 void WebContentsImpl::DidAccessInitialDocument() {
3733   has_accessed_initial_document_ = true;
3734
3735   // We may have left a failed browser-initiated navigation in the address bar
3736   // to let the user edit it and try again.  Clear it now that content might
3737   // show up underneath it.
3738   if (!IsLoading() && controller_.GetPendingEntry())
3739     controller_.DiscardPendingEntry();
3740
3741   // Update the URL display.
3742   NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
3743 }
3744
3745 void WebContentsImpl::DidDisownOpener(RenderFrameHost* render_frame_host) {
3746   // No action is necessary if the opener has already been cleared.
3747   if (!opener_)
3748     return;
3749
3750   // Clear our opener so that future cross-process navigations don't have an
3751   // opener assigned.
3752   RemoveDestructionObserver(opener_);
3753   opener_ = NULL;
3754
3755   // Notify all swapped out RenderViewHosts for this tab.  This is important
3756   // in case we go back to them, or if another window in those processes tries
3757   // to access window.opener.
3758   GetRenderManager()->DidDisownOpener(render_frame_host);
3759 }
3760
3761 void WebContentsImpl::DocumentOnLoadCompleted(
3762     RenderFrameHost* render_frame_host) {
3763   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3764                     DocumentOnLoadCompletedInMainFrame());
3765
3766   // TODO(avi): Remove. http://crbug.com/170921
3767   NotificationService::current()->Notify(
3768       NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
3769       Source<WebContents>(this),
3770       NotificationService::NoDetails());
3771 }
3772
3773 void WebContentsImpl::UpdateTitle(RenderFrameHost* render_frame_host,
3774                                   int32 page_id,
3775                                   const base::string16& title,
3776                                   base::i18n::TextDirection title_direction) {
3777   RenderViewHost* rvh = render_frame_host->GetRenderViewHost();
3778
3779   // If we have a title, that's a pretty good indication that we've started
3780   // getting useful data.
3781   SetNotWaitingForResponse();
3782
3783   // Try to find the navigation entry, which might not be the current one.
3784   // For example, it might be from a pending RVH for the pending entry.
3785   NavigationEntryImpl* entry = controller_.GetEntryWithPageID(
3786       rvh->GetSiteInstance(), page_id);
3787
3788   // We can handle title updates when we don't have an entry in
3789   // UpdateTitleForEntry, but only if the update is from the current RVH.
3790   // TODO(avi): Change to make decisions based on the RenderFrameHost.
3791   if (!entry && rvh != GetRenderViewHost())
3792     return;
3793
3794   // TODO(evan): make use of title_direction.
3795   // http://code.google.com/p/chromium/issues/detail?id=27094
3796   if (!UpdateTitleForEntry(entry, title))
3797     return;
3798
3799   // Broadcast notifications when the UI should be updated.
3800   if (entry == controller_.GetEntryAtOffset(0))
3801     NotifyNavigationStateChanged(INVALIDATE_TYPE_TITLE);
3802 }
3803
3804 void WebContentsImpl::UpdateEncoding(RenderFrameHost* render_frame_host,
3805                                      const std::string& encoding) {
3806   SetEncoding(encoding);
3807 }
3808
3809 void WebContentsImpl::DocumentAvailableInMainFrame(
3810     RenderViewHost* render_view_host) {
3811   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
3812                     DocumentAvailableInMainFrame());
3813 }
3814 void WebContentsImpl::RouteCloseEvent(RenderViewHost* rvh) {
3815   // Tell the active RenderViewHost to run unload handlers and close, as long
3816   // as the request came from a RenderViewHost in the same BrowsingInstance.
3817   // In most cases, we receive this from a swapped out RenderViewHost.
3818   // It is possible to receive it from one that has just been swapped in,
3819   // in which case we might as well deliver the message anyway.
3820   if (rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance()))
3821     GetRenderViewHost()->ClosePage();
3822 }
3823
3824 void WebContentsImpl::RouteMessageEvent(
3825     RenderViewHost* rvh,
3826     const ViewMsg_PostMessage_Params& params) {
3827   // Only deliver the message to the active RenderViewHost if the request
3828   // came from a RenderViewHost in the same BrowsingInstance or if this
3829   // WebContents is dedicated to a browser plugin guest.
3830   // Note: This check means that an embedder could theoretically receive a
3831   // postMessage from anyone (not just its own guests). However, this is
3832   // probably not a risk for apps since other pages won't have references
3833   // to App windows.
3834   if (!rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance()) &&
3835       !GetBrowserPluginGuest() && !GetBrowserPluginEmbedder())
3836     return;
3837
3838   ViewMsg_PostMessage_Params new_params(params);
3839
3840   if (!params.message_port_ids.empty()) {
3841     MessagePortMessageFilter* message_port_message_filter =
3842         static_cast<RenderProcessHostImpl*>(GetRenderProcessHost())
3843             ->message_port_message_filter();
3844     message_port_message_filter->UpdateMessagePortsWithNewRoutes(
3845         params.message_port_ids,
3846         &new_params.new_routing_ids);
3847   }
3848
3849   // If there is a source_routing_id, translate it to the routing ID for
3850   // the equivalent swapped out RVH in the target process.  If we need
3851   // to create a swapped out RVH for the source tab, we create its opener
3852   // chain as well, since those will also be accessible to the target page.
3853   if (new_params.source_routing_id != MSG_ROUTING_NONE) {
3854     // Try to look up the WebContents for the source page.
3855     WebContentsImpl* source_contents = NULL;
3856     RenderViewHostImpl* source_rvh = RenderViewHostImpl::FromID(
3857         rvh->GetProcess()->GetID(), params.source_routing_id);
3858     if (source_rvh) {
3859       source_contents = static_cast<WebContentsImpl*>(
3860           source_rvh->GetDelegate()->GetAsWebContents());
3861     }
3862
3863     if (source_contents) {
3864       if (GetBrowserPluginGuest()) {
3865         // We create a swapped out RenderView for the embedder in the guest's
3866         // render process but we intentionally do not expose the embedder's
3867         // opener chain to it.
3868         new_params.source_routing_id =
3869             source_contents->CreateSwappedOutRenderView(GetSiteInstance());
3870       } else {
3871         new_params.source_routing_id =
3872             source_contents->CreateOpenerRenderViews(GetSiteInstance());
3873       }
3874     } else {
3875       // We couldn't find it, so don't pass a source frame.
3876       new_params.source_routing_id = MSG_ROUTING_NONE;
3877     }
3878   }
3879
3880   // In most cases, we receive this from a swapped out RenderViewHost.
3881   // It is possible to receive it from one that has just been swapped in,
3882   // in which case we might as well deliver the message anyway.
3883   Send(new ViewMsg_PostMessageEvent(GetRoutingID(), new_params));
3884 }
3885
3886 bool WebContentsImpl::AddMessageToConsole(int32 level,
3887                                           const base::string16& message,
3888                                           int32 line_no,
3889                                           const base::string16& source_id) {
3890   if (!delegate_)
3891     return false;
3892   return delegate_->AddMessageToConsole(this, level, message, line_no,
3893                                         source_id);
3894 }
3895
3896 WebPreferences WebContentsImpl::ComputeWebkitPrefs() {
3897   // We want to base the page config off of the actual URL, rather than the
3898   // virtual URL.
3899   // TODO(nasko): Investigate how to remove the GetActiveEntry usage here,
3900   // as it is deprecated and can be out of sync with GetRenderViewHost().
3901   GURL url = controller_.GetActiveEntry()
3902       ? controller_.GetActiveEntry()->GetURL() : GURL::EmptyGURL();
3903
3904   return GetRenderManager()->current_host()->ComputeWebkitPrefs(url);
3905 }
3906
3907 int WebContentsImpl::CreateSwappedOutRenderView(
3908     SiteInstance* instance) {
3909   return GetRenderManager()->CreateRenderFrame(
3910       instance, MSG_ROUTING_NONE, CREATE_RF_SWAPPED_OUT |
3911                                       CREATE_RF_FOR_MAIN_FRAME_NAVIGATION |
3912                                       CREATE_RF_HIDDEN);
3913 }
3914
3915 void WebContentsImpl::OnUserGesture() {
3916   // Notify observers.
3917   FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidGetUserGesture());
3918
3919   ResourceDispatcherHostImpl* rdh = ResourceDispatcherHostImpl::Get();
3920   if (rdh)  // NULL in unittests.
3921     rdh->OnUserGesture(this);
3922 }
3923
3924 void WebContentsImpl::OnIgnoredUIEvent() {
3925   // Notify observers.
3926   FOR_EACH_OBSERVER(WebContentsObserver, observers_, DidGetIgnoredUIEvent());
3927 }
3928
3929 void WebContentsImpl::RendererUnresponsive(RenderViewHost* render_view_host) {
3930   // Don't show hung renderer dialog for a swapped out RVH.
3931   if (render_view_host != GetRenderViewHost())
3932     return;
3933
3934   RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(render_view_host);
3935   RenderFrameHostImpl* rfhi =
3936       static_cast<RenderFrameHostImpl*>(rvhi->GetMainFrame());
3937
3938   // Ignore renderer unresponsive event if debugger is attached to the tab
3939   // since the event may be a result of the renderer sitting on a breakpoint.
3940   // See http://crbug.com/65458
3941   if (DevToolsAgentHost::IsDebuggerAttached(this))
3942     return;
3943
3944   if (rfhi->is_waiting_for_beforeunload_ack() ||
3945       rfhi->IsWaitingForUnloadACK()) {
3946     // Hang occurred while firing the beforeunload/unload handler.
3947     // Pretend the handler fired so tab closing continues as if it had.
3948     rvhi->set_sudden_termination_allowed(true);
3949
3950     if (!GetRenderManager()->ShouldCloseTabOnUnresponsiveRenderer())
3951       return;
3952
3953     // If the tab hangs in the beforeunload/unload handler there's really
3954     // nothing we can do to recover. If the hang is in the beforeunload handler,
3955     // pretend the beforeunload listeners have all fired and allow the delegate
3956     // to continue closing; the user will not have the option of cancelling the
3957     // close. Otherwise, pretend the unload listeners have all fired and close
3958     // the tab.
3959     bool close = true;
3960     if (rfhi->is_waiting_for_beforeunload_ack() && delegate_) {
3961       delegate_->BeforeUnloadFired(this, true, &close);
3962     }
3963     if (close)
3964       Close(rvhi);
3965     return;
3966   }
3967
3968   if (!GetRenderViewHostImpl() || !GetRenderViewHostImpl()->IsRenderViewLive())
3969     return;
3970
3971   if (delegate_)
3972     delegate_->RendererUnresponsive(this);
3973 }
3974
3975 void WebContentsImpl::RendererResponsive(RenderViewHost* render_view_host) {
3976   if (delegate_)
3977     delegate_->RendererResponsive(this);
3978 }
3979
3980 void WebContentsImpl::LoadStateChanged(
3981     const GURL& url,
3982     const net::LoadStateWithParam& load_state,
3983     uint64 upload_position,
3984     uint64 upload_size) {
3985   load_state_ = load_state;
3986   upload_position_ = upload_position;
3987   upload_size_ = upload_size;
3988   load_state_host_ = net::IDNToUnicode(url.host(),
3989       GetContentClient()->browser()->GetAcceptLangs(
3990           GetBrowserContext()));
3991   if (load_state_.state == net::LOAD_STATE_READING_RESPONSE)
3992     SetNotWaitingForResponse();
3993   if (IsLoading()) {
3994     NotifyNavigationStateChanged(static_cast<InvalidateTypes>(
3995         INVALIDATE_TYPE_LOAD | INVALIDATE_TYPE_TAB));
3996   }
3997 }
3998
3999 void WebContentsImpl::BeforeUnloadFiredFromRenderManager(
4000     bool proceed, const base::TimeTicks& proceed_time,
4001     bool* proceed_to_fire_unload) {
4002   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
4003                     BeforeUnloadFired(proceed_time));
4004   if (delegate_)
4005     delegate_->BeforeUnloadFired(this, proceed, proceed_to_fire_unload);
4006   // Note: |this| might be deleted at this point.
4007 }
4008
4009 void WebContentsImpl::RenderProcessGoneFromRenderManager(
4010     RenderViewHost* render_view_host) {
4011   DCHECK(crashed_status_ != base::TERMINATION_STATUS_STILL_RUNNING);
4012   RenderViewTerminated(render_view_host, crashed_status_, crashed_error_code_);
4013 }
4014
4015 void WebContentsImpl::UpdateRenderViewSizeForRenderManager() {
4016   // TODO(brettw) this is a hack. See WebContentsView::SizeContents.
4017   gfx::Size size = GetSizeForNewRenderView();
4018   // 0x0 isn't a valid window size (minimal window size is 1x1) but it may be
4019   // here during container initialization and normal window size will be set
4020   // later. In case of tab duplication this resizing to 0x0 prevents setting
4021   // normal size later so just ignore it.
4022   if (!size.IsEmpty())
4023     view_->SizeContents(size);
4024 }
4025
4026 void WebContentsImpl::CancelModalDialogsForRenderManager() {
4027   // We need to cancel modal dialogs when doing a process swap, since the load
4028   // deferrer would prevent us from swapping out.
4029   if (dialog_manager_)
4030     dialog_manager_->CancelActiveAndPendingDialogs(this);
4031 }
4032
4033 void WebContentsImpl::NotifySwappedFromRenderManager(RenderFrameHost* old_host,
4034                                                      RenderFrameHost* new_host,
4035                                                      bool is_main_frame) {
4036   if (is_main_frame) {
4037     NotifyViewSwapped(old_host ? old_host->GetRenderViewHost() : NULL,
4038                       new_host->GetRenderViewHost());
4039
4040     // Make sure the visible RVH reflects the new delegate's preferences.
4041     if (delegate_)
4042       view_->SetOverscrollControllerEnabled(CanOverscrollContent());
4043
4044     view_->RenderViewSwappedIn(new_host->GetRenderViewHost());
4045   }
4046
4047   NotifyFrameSwapped(old_host, new_host);
4048 }
4049
4050 int WebContentsImpl::CreateOpenerRenderViewsForRenderManager(
4051     SiteInstance* instance) {
4052   if (!opener_)
4053     return MSG_ROUTING_NONE;
4054
4055   // Recursively create RenderViews for anything else in the opener chain.
4056   return opener_->CreateOpenerRenderViews(instance);
4057 }
4058
4059 int WebContentsImpl::CreateOpenerRenderViews(SiteInstance* instance) {
4060   int opener_route_id = MSG_ROUTING_NONE;
4061
4062   // If this tab has an opener, ensure it has a RenderView in the given
4063   // SiteInstance as well.
4064   if (opener_)
4065     opener_route_id = opener_->CreateOpenerRenderViews(instance);
4066
4067   // If any of the renderers (current, pending, or swapped out) for this
4068   // WebContents has the same SiteInstance, use it.
4069   if (GetRenderManager()->current_host()->GetSiteInstance() == instance)
4070     return GetRenderManager()->current_host()->GetRoutingID();
4071
4072   if (GetRenderManager()->pending_render_view_host() &&
4073       GetRenderManager()->pending_render_view_host()->GetSiteInstance() ==
4074           instance)
4075     return GetRenderManager()->pending_render_view_host()->GetRoutingID();
4076
4077   RenderViewHostImpl* rvh = GetRenderManager()->GetSwappedOutRenderViewHost(
4078       instance);
4079   if (rvh)
4080     return rvh->GetRoutingID();
4081
4082   // Create a swapped out RenderView in the given SiteInstance if none exists,
4083   // setting its opener to the given route_id.  Return the new view's route_id.
4084   return GetRenderManager()->CreateRenderFrame(
4085       instance, opener_route_id, CREATE_RF_FOR_MAIN_FRAME_NAVIGATION |
4086                                      CREATE_RF_SWAPPED_OUT | CREATE_RF_HIDDEN);
4087 }
4088
4089 NavigationControllerImpl& WebContentsImpl::GetControllerForRenderManager() {
4090   return GetController();
4091 }
4092
4093 WebUIImpl* WebContentsImpl::CreateWebUIForRenderManager(const GURL& url) {
4094   return static_cast<WebUIImpl*>(CreateWebUI(url));
4095 }
4096
4097 NavigationEntry*
4098     WebContentsImpl::GetLastCommittedNavigationEntryForRenderManager() {
4099   return controller_.GetLastCommittedEntry();
4100 }
4101
4102 bool WebContentsImpl::CreateRenderViewForRenderManager(
4103     RenderViewHost* render_view_host,
4104     int opener_route_id,
4105     int proxy_routing_id,
4106     bool for_main_frame_navigation) {
4107   TRACE_EVENT0("browser,navigation",
4108                "WebContentsImpl::CreateRenderViewForRenderManager");
4109   // Can be NULL during tests.
4110   RenderWidgetHostViewBase* rwh_view;
4111   // TODO(kenrb): RenderWidgetHostViewChildFrame special casing is temporary
4112   // until RenderWidgetHost is attached to RenderFrameHost. We need to special
4113   // case this because RWH is still a base class of RenderViewHost, and child
4114   // frame RWHVs are unique in that they do not have their own WebContents.
4115   if (!for_main_frame_navigation) {
4116     RenderWidgetHostViewChildFrame* rwh_view_child =
4117         new RenderWidgetHostViewChildFrame(render_view_host);
4118     rwh_view = rwh_view_child;
4119   } else {
4120     rwh_view = view_->CreateViewForWidget(render_view_host, false);
4121   }
4122
4123   // Now that the RenderView has been created, we need to tell it its size.
4124   if (rwh_view)
4125     rwh_view->SetSize(GetSizeForNewRenderView());
4126
4127   // Make sure we use the correct starting page_id in the new RenderView.
4128   UpdateMaxPageIDIfNecessary(render_view_host);
4129   int32 max_page_id =
4130       GetMaxPageIDForSiteInstance(render_view_host->GetSiteInstance());
4131
4132   if (!static_cast<RenderViewHostImpl*>(
4133           render_view_host)->CreateRenderView(base::string16(),
4134                                               opener_route_id,
4135                                               proxy_routing_id,
4136                                               max_page_id,
4137                                               created_with_opener_)) {
4138     return false;
4139   }
4140
4141 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
4142   // Force a ViewMsg_Resize to be sent, needed to make plugins show up on
4143   // linux. See crbug.com/83941.
4144   if (rwh_view) {
4145     if (RenderWidgetHost* render_widget_host = rwh_view->GetRenderWidgetHost())
4146       render_widget_host->WasResized();
4147   }
4148 #endif
4149
4150   return true;
4151 }
4152
4153 bool WebContentsImpl::CreateRenderFrameForRenderManager(
4154     RenderFrameHost* render_frame_host,
4155     int parent_routing_id,
4156     int proxy_routing_id) {
4157   TRACE_EVENT0("browser,navigation",
4158                "WebContentsImpl::CreateRenderFrameForRenderManager");
4159
4160   RenderFrameHostImpl* rfh =
4161       static_cast<RenderFrameHostImpl*>(render_frame_host);
4162   if (!rfh->CreateRenderFrame(parent_routing_id, proxy_routing_id))
4163     return false;
4164
4165   // TODO(nasko): When RenderWidgetHost is owned by RenderFrameHost, the passed
4166   // RenderFrameHost will have to be associated with the appropriate
4167   // RenderWidgetHostView or a new one should be created here.
4168
4169   return true;
4170 }
4171
4172 #if defined(OS_ANDROID)
4173
4174 base::android::ScopedJavaLocalRef<jobject>
4175 WebContentsImpl::GetJavaWebContents() {
4176   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
4177   return GetWebContentsAndroid()->GetJavaObject();
4178 }
4179
4180 WebContentsAndroid* WebContentsImpl::GetWebContentsAndroid() {
4181   WebContentsAndroid* web_contents_android =
4182       static_cast<WebContentsAndroid*>(GetUserData(kWebContentsAndroidKey));
4183   if (!web_contents_android) {
4184     web_contents_android = new WebContentsAndroid(this);
4185     SetUserData(kWebContentsAndroidKey, web_contents_android);
4186   }
4187   return web_contents_android;
4188 }
4189
4190 bool WebContentsImpl::CreateRenderViewForInitialEmptyDocument() {
4191   return CreateRenderViewForRenderManager(GetRenderViewHost(),
4192                                           MSG_ROUTING_NONE,
4193                                           MSG_ROUTING_NONE,
4194                                           true);
4195 }
4196
4197 #elif defined(OS_MACOSX)
4198
4199 void WebContentsImpl::SetAllowOtherViews(bool allow) {
4200   view_->SetAllowOtherViews(allow);
4201 }
4202
4203 bool WebContentsImpl::GetAllowOtherViews() {
4204   return view_->GetAllowOtherViews();
4205 }
4206
4207 #endif
4208
4209 void WebContentsImpl::OnDialogClosed(int render_process_id,
4210                                      int render_frame_id,
4211                                      IPC::Message* reply_msg,
4212                                      bool dialog_was_suppressed,
4213                                      bool success,
4214                                      const base::string16& user_input) {
4215   RenderFrameHostImpl* rfh = RenderFrameHostImpl::FromID(render_process_id,
4216                                                          render_frame_id);
4217   last_dialog_suppressed_ = dialog_was_suppressed;
4218
4219   if (is_showing_before_unload_dialog_ && !success) {
4220     // If a beforeunload dialog is canceled, we need to stop the throbber from
4221     // spinning, since we forced it to start spinning in Navigate.
4222     if (rfh)
4223       DidStopLoading(rfh);
4224     controller_.DiscardNonCommittedEntries();
4225
4226     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
4227                       BeforeUnloadDialogCancelled());
4228   }
4229
4230   is_showing_before_unload_dialog_ = false;
4231   if (rfh) {
4232     rfh->JavaScriptDialogClosed(reply_msg, success, user_input,
4233                                 dialog_was_suppressed);
4234   } else {
4235     // Don't leak the sync IPC reply if the RFH or process is gone.
4236     delete reply_msg;
4237   }
4238 }
4239
4240 void WebContentsImpl::SetEncoding(const std::string& encoding) {
4241   if (encoding == last_reported_encoding_)
4242     return;
4243   last_reported_encoding_ = encoding;
4244
4245   canonical_encoding_ = GetContentClient()->browser()->
4246       GetCanonicalEncodingNameByAliasName(encoding);
4247 }
4248
4249 bool WebContentsImpl::IsHidden() {
4250   return capturer_count_ == 0 && !should_normally_be_visible_;
4251 }
4252
4253 RenderFrameHostManager* WebContentsImpl::GetRenderManager() const {
4254   return frame_tree_.root()->render_manager();
4255 }
4256
4257 RenderViewHostImpl* WebContentsImpl::GetRenderViewHostImpl() {
4258   return static_cast<RenderViewHostImpl*>(GetRenderViewHost());
4259 }
4260
4261 BrowserPluginGuest* WebContentsImpl::GetBrowserPluginGuest() const {
4262   return browser_plugin_guest_.get();
4263 }
4264
4265 void WebContentsImpl::SetBrowserPluginGuest(BrowserPluginGuest* guest) {
4266   CHECK(!browser_plugin_guest_);
4267   browser_plugin_guest_.reset(guest);
4268 }
4269
4270 BrowserPluginEmbedder* WebContentsImpl::GetBrowserPluginEmbedder() const {
4271   return browser_plugin_embedder_.get();
4272 }
4273
4274 void WebContentsImpl::ClearPowerSaveBlockers(
4275     RenderFrameHost* render_frame_host) {
4276   RemoveAllMediaPlayerEntries(render_frame_host, &active_audio_players_);
4277   RemoveAllMediaPlayerEntries(render_frame_host, &active_video_players_);
4278   MaybeReleasePowerSaveBlockers();
4279 }
4280
4281 void WebContentsImpl::ClearAllPowerSaveBlockers() {
4282   active_audio_players_.clear();
4283   active_video_players_.clear();
4284   audio_power_save_blocker_.reset();
4285   video_power_save_blocker_.reset();
4286 }
4287
4288 gfx::Size WebContentsImpl::GetSizeForNewRenderView() {
4289   gfx::Size size;
4290   if (delegate_)
4291     size = delegate_->GetSizeForNewRenderView(this);
4292   if (size.IsEmpty())
4293     size = GetContainerBounds().size();
4294   return size;
4295 }
4296
4297 void WebContentsImpl::OnFrameRemoved(RenderFrameHost* render_frame_host) {
4298   FOR_EACH_OBSERVER(
4299       WebContentsObserver, observers_, FrameDetached(render_frame_host));
4300 }
4301
4302 void WebContentsImpl::OnPreferredSizeChanged(const gfx::Size& old_size) {
4303   if (!delegate_)
4304     return;
4305   const gfx::Size new_size = GetPreferredSize();
4306   if (new_size != old_size)
4307     delegate_->UpdatePreferredSize(this, new_size);
4308 }
4309
4310 void WebContentsImpl::AddMediaPlayerEntry(int64 player_cookie,
4311                                           ActiveMediaPlayerMap* player_map) {
4312   const uintptr_t key =
4313       reinterpret_cast<uintptr_t>(render_frame_message_source_);
4314   DCHECK(std::find((*player_map)[key].begin(),
4315                    (*player_map)[key].end(),
4316                    player_cookie) == (*player_map)[key].end());
4317   (*player_map)[key].push_back(player_cookie);
4318 }
4319
4320 void WebContentsImpl::RemoveMediaPlayerEntry(int64 player_cookie,
4321                                              ActiveMediaPlayerMap* player_map) {
4322   const uintptr_t key =
4323       reinterpret_cast<uintptr_t>(render_frame_message_source_);
4324   ActiveMediaPlayerMap::iterator it = player_map->find(key);
4325   if (it == player_map->end())
4326     return;
4327
4328   // Remove the player.
4329   PlayerList::iterator player_it =
4330       std::find(it->second.begin(), it->second.end(), player_cookie);
4331   if (player_it != it->second.end())
4332     it->second.erase(player_it);
4333
4334   // If there are no players left, remove the map entry.
4335   if (it->second.empty())
4336     player_map->erase(it);
4337 }
4338
4339 void WebContentsImpl::RemoveAllMediaPlayerEntries(
4340     RenderFrameHost* render_frame_host,
4341     ActiveMediaPlayerMap* player_map) {
4342   ActiveMediaPlayerMap::iterator it =
4343       player_map->find(reinterpret_cast<uintptr_t>(render_frame_host));
4344   if (it == player_map->end())
4345     return;
4346   player_map->erase(it);
4347 }
4348
4349 void WebContentsImpl::ResumeResponseDeferredAtStart() {
4350   FrameTreeNode* node = frame_tree_.root();
4351   node->render_manager()->ResumeResponseDeferredAtStart();
4352 }
4353
4354 void WebContentsImpl::SetForceDisableOverscrollContent(bool force_disable) {
4355   force_disable_overscroll_content_ = force_disable;
4356   if (view_)
4357     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
4358 }
4359
4360 }  // namespace content