content/browser/web_contents/web_contents_impl.h

   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 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
   6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11
  12 #include "base/compiler_specific.h"
  13 #include "base/containers/scoped_ptr_hash_map.h"
  14 #include "base/gtest_prod_util.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/observer_list.h"
  17 #include "base/process/process.h"
  18 #include "base/values.h"
  19 #include "content/browser/frame_host/frame_tree.h"
  20 #include "content/browser/frame_host/navigation_controller_delegate.h"
  21 #include "content/browser/frame_host/navigation_controller_impl.h"
  22 #include "content/browser/frame_host/navigator_delegate.h"
  23 #include "content/browser/frame_host/render_frame_host_delegate.h"
  24 #include "content/browser/frame_host/render_frame_host_manager.h"
  25 #include "content/browser/media/audio_state_provider.h"
  26 #include "content/browser/renderer_host/render_view_host_delegate.h"
  27 #include "content/browser/renderer_host/render_view_host_impl.h"
  28 #include "content/browser/renderer_host/render_widget_host_delegate.h"
  29 #include "content/common/accessibility_mode_enums.h"
  30 #include "content/common/content_export.h"
  31 #include "content/public/browser/color_chooser.h"
  32 #include "content/public/browser/notification_observer.h"
  33 #include "content/public/browser/notification_registrar.h"
  34 #include "content/public/browser/web_contents.h"
  35 #include "content/public/common/renderer_preferences.h"
  36 #include "content/public/common/resource_type.h"
  37 #include "content/public/common/three_d_api_types.h"
  38 #include "net/base/load_states.h"
  39 #include "net/http/http_response_headers.h"
  40 #include "third_party/WebKit/public/web/WebDragOperation.h"
  41 #include "ui/base/page_transition_types.h"
  42 #include "ui/gfx/geometry/rect_f.h"
  43 #include "ui/gfx/geometry/size.h"
  44
  45 struct BrowserPluginHostMsg_ResizeGuest_Params;
  46 struct ViewHostMsg_DateTimeDialogValue_Params;
  47
  48 namespace content {
  49 class BrowserPluginEmbedder;
  50 class BrowserPluginGuest;
  51 class BrowserPluginGuestManager;
  52 class DateTimeChooserAndroid;
  53 class DownloadItem;
  54 class GeolocationServiceContext;
  55 class InterstitialPageImpl;
  56 class JavaScriptDialogManager;
  57 class ManifestManagerHost;
  58 class MediaWebContentsObserver;
  59 class PluginContentOriginWhitelist;
  60 class PowerSaveBlocker;
  61 class RenderViewHost;
  62 class RenderViewHostDelegateView;
  63 class RenderWidgetHostImpl;
  64 class SavePackage;
  65 class ScreenOrientationDispatcherHost;
  66 class SiteInstance;
  67 class TestWebContents;
  68 class WebContentsAudioMuter;
  69 class WebContentsDelegate;
  70 class WebContentsImpl;
  71 class WebContentsObserver;
  72 class WebContentsView;
  73 class WebContentsViewDelegate;
  74 struct AXEventNotificationDetails;
  75 struct ColorSuggestion;
  76 struct FaviconURL;
  77 struct LoadNotificationDetails;
  78 struct ResourceRedirectDetails;
  79 struct ResourceRequestDetails;
  80
  81 #if defined(OS_ANDROID)
  82 class WebContentsAndroid;
  83 #endif
  84
  85 // Factory function for the implementations that content knows about. Takes
  86 // ownership of |delegate|.
  87 WebContentsView* CreateWebContentsView(
  88     WebContentsImpl* web_contents,
  89     WebContentsViewDelegate* delegate,
  90     RenderViewHostDelegateView** render_view_host_delegate_view);
  91
  92 class CONTENT_EXPORT WebContentsImpl
  93     : public NON_EXPORTED_BASE(WebContents),
  94       public NON_EXPORTED_BASE(RenderFrameHostDelegate),
  95       public RenderViewHostDelegate,
  96       public RenderWidgetHostDelegate,
  97       public RenderFrameHostManager::Delegate,
  98       public NotificationObserver,
  99       public NON_EXPORTED_BASE(NavigationControllerDelegate),
 100       public NON_EXPORTED_BASE(NavigatorDelegate) {
 101  public:
 102   class FriendZone;
 103
 104   ~WebContentsImpl() override;
 105
 106   static WebContentsImpl* CreateWithOpener(
 107       const WebContents::CreateParams& params,
 108       WebContentsImpl* opener);
 109
 110   static std::vector<WebContentsImpl*> GetAllWebContents();
 111
 112   // Returns the opener WebContentsImpl, if any. This can be set to null if the
 113   // opener is closed or the page clears its window.opener.
 114   WebContentsImpl* opener() const { return opener_; }
 115
 116   // Creates a swapped out RenderView. This is used by the browser plugin to
 117   // create a swapped out RenderView in the embedder render process for the
 118   // guest, to expose the guest's window object to the embedder.
 119   // This returns the routing ID of the newly created swapped out RenderView.
 120   int CreateSwappedOutRenderView(SiteInstance* instance);
 121
 122   // Complex initialization here. Specifically needed to avoid having
 123   // members call back into our virtual functions in the constructor.
 124   virtual void Init(const WebContents::CreateParams& params);
 125
 126   // Returns the SavePackage which manages the page saving job. May be NULL.
 127   SavePackage* save_package() const { return save_package_.get(); }
 128
 129 #if defined(OS_ANDROID)
 130   // In Android WebView, the RenderView needs created even there is no
 131   // navigation entry, this allows Android WebViews to use
 132   // javascript: URLs that load into the DOMWindow before the first page
 133   // load. This is not safe to do in any context that a web page could get a
 134   // reference to the DOMWindow before the first page load.
 135   bool CreateRenderViewForInitialEmptyDocument();
 136 #endif
 137
 138   // Expose the render manager for testing.
 139   // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
 140   RenderFrameHostManager* GetRenderManagerForTesting();
 141
 142   // Returns guest browser plugin object, or NULL if this WebContents is not a
 143   // guest.
 144   BrowserPluginGuest* GetBrowserPluginGuest() const;
 145
 146   // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
 147   // has a BrowserPluginGuest then that implies that it is being hosted by
 148   // a BrowserPlugin object in an embedder renderer process.
 149   void SetBrowserPluginGuest(BrowserPluginGuest* guest);
 150
 151   // Returns embedder browser plugin object, or NULL if this WebContents is not
 152   // an embedder.
 153   BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
 154
 155   // Creates a BrowserPluginEmbedder object for this WebContents if one doesn't
 156   // already exist.
 157   void CreateBrowserPluginEmbedderIfNecessary();
 158
 159   // Gets the current fullscreen render widget's routing ID. Returns
 160   // MSG_ROUTING_NONE when there is no fullscreen render widget.
 161   int GetFullscreenWidgetRoutingID() const;
 162
 163   // Invoked when visible SSL state (as defined by SSLStatus) changes.
 164   void DidChangeVisibleSSLState();
 165
 166   // Informs the render view host and the BrowserPluginEmbedder, if present, of
 167   // a Drag Source End.
 168   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
 169       int screen_y, blink::WebDragOperation operation);
 170
 171   // A response has been received for a resource request.
 172   void DidGetResourceResponseStart(
 173       const ResourceRequestDetails& details);
 174
 175   // A redirect was received while requesting a resource.
 176   void DidGetRedirectForResourceRequest(
 177       RenderFrameHost* render_frame_host,
 178       const ResourceRedirectDetails& details);
 179
 180   // Notify observers that the web contents has been focused.
 181   void NotifyWebContentsFocused();
 182
 183   WebContentsView* GetView() const;
 184
 185   ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
 186     return screen_orientation_dispatcher_host_.get();
 187   }
 188
 189   bool should_normally_be_visible() { return should_normally_be_visible_; }
 190
 191   // Indicate if the window has been occluded, and pass this to the views, only
 192   // if there is no active capture going on (otherwise it is dropped on the
 193   // floor).
 194   void WasOccluded();
 195   void WasUnOccluded();
 196
 197   // Broadcasts the mode change to all frames.
 198   void SetAccessibilityMode(AccessibilityMode mode);
 199
 200   // Adds the given accessibility mode to the current accessibility mode
 201   // bitmap.
 202   void AddAccessibilityMode(AccessibilityMode mode);
 203
 204   // Removes the given accessibility mode from the current accessibility
 205   // mode bitmap, managing the bits that are shared with other modes such
 206   // that a bit will only be turned off when all modes that depend on it
 207   // have been removed.
 208   void RemoveAccessibilityMode(AccessibilityMode mode);
 209
 210   // Request a one-time snapshot of the accessibility tree without changing
 211   // the accessibility mode.
 212   typedef base::Callback<void(const ui::AXTreeUpdate&)>
 213       AXTreeSnapshotCallback;
 214   void RequestAXTreeSnapshot(AXTreeSnapshotCallback callback);
 215
 216   // Clear the navigation transition data when the user navigates back to Chrome
 217   // from a native app.
 218   void ClearNavigationTransitionData();
 219
 220   // WebContents ------------------------------------------------------
 221   WebContentsDelegate* GetDelegate() override;
 222   void SetDelegate(WebContentsDelegate* delegate) override;
 223   NavigationControllerImpl& GetController() override;
 224   const NavigationControllerImpl& GetController() const override;
 225   BrowserContext* GetBrowserContext() const override;
 226   const GURL& GetURL() const override;
 227   const GURL& GetVisibleURL() const override;
 228   const GURL& GetLastCommittedURL() const override;
 229   RenderProcessHost* GetRenderProcessHost() const override;
 230   RenderFrameHostImpl* GetMainFrame() override;
 231   RenderFrameHost* GetFocusedFrame() override;
 232   void ForEachFrame(
 233       const base::Callback<void(RenderFrameHost*)>& on_frame) override;
 234   void SendToAllFrames(IPC::Message* message) override;
 235   RenderViewHostImpl* GetRenderViewHost() const override;
 236   int GetRoutingID() const override;
 237   RenderWidgetHostView* GetRenderWidgetHostView() const override;
 238   RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const override;
 239   SkColor GetThemeColor() const override;
 240   WebUI* CreateWebUI(const GURL& url) override;
 241   WebUI* GetWebUI() const override;
 242   WebUI* GetCommittedWebUI() const override;
 243   void SetUserAgentOverride(const std::string& override) override;
 244   const std::string& GetUserAgentOverride() const override;
 245   void EnableTreeOnlyAccessibilityMode() override;
 246   bool IsTreeOnlyAccessibilityModeForTesting() const override;
 247   bool IsFullAccessibilityModeForTesting() const override;
 248 #if defined(OS_WIN)
 249   virtual void SetParentNativeViewAccessible(
 250       gfx::NativeViewAccessible accessible_parent) override;
 251 #endif
 252   const base::string16& GetTitle() const override;
 253   int32 GetMaxPageID() override;
 254   int32 GetMaxPageIDForSiteInstance(SiteInstance* site_instance) override;
 255   SiteInstanceImpl* GetSiteInstance() const override;
 256   SiteInstanceImpl* GetPendingSiteInstance() const override;
 257   bool IsLoading() const override;
 258   bool IsLoadingToDifferentDocument() const override;
 259   bool IsWaitingForResponse() const override;
 260   const net::LoadStateWithParam& GetLoadState() const override;
 261   const base::string16& GetLoadStateHost() const override;
 262   uint64 GetUploadSize() const override;
 263   uint64 GetUploadPosition() const override;
 264   std::set<GURL> GetSitesInTab() const override;
 265   const std::string& GetEncoding() const override;
 266   bool DisplayedInsecureContent() const override;
 267   void IncrementCapturerCount(const gfx::Size& capture_size) override;
 268   void DecrementCapturerCount() override;
 269   int GetCapturerCount() const override;
 270   bool IsAudioMuted() const override;
 271   void SetAudioMuted(bool mute) override;
 272   bool IsCrashed() const override;
 273   void SetIsCrashed(base::TerminationStatus status, int error_code) override;
 274   base::TerminationStatus GetCrashedStatus() const override;
 275   bool IsBeingDestroyed() const override;
 276   void NotifyNavigationStateChanged(InvalidateTypes changed_flags) override;
 277   base::TimeTicks GetLastActiveTime() const override;
 278   void WasShown() override;
 279   void WasHidden() override;
 280   bool NeedToFireBeforeUnload() override;
 281   void DispatchBeforeUnload(bool for_cross_site_transition) override;
 282   void Stop() override;
 283   WebContents* Clone() override;
 284   void ReloadFocusedFrame(bool ignore_cache) override;
 285   void Undo() override;
 286   void Redo() override;
 287   void Cut() override;
 288   void Copy() override;
 289   void CopyToFindPboard() override;
 290   void Paste() override;
 291   void PasteAndMatchStyle() override;
 292   void Delete() override;
 293   void SelectAll() override;
 294   void Unselect() override;
 295   void Replace(const base::string16& word) override;
 296   void ReplaceMisspelling(const base::string16& word) override;
 297   void NotifyContextMenuClosed(
 298       const CustomContextMenuContext& context) override;
 299   void ExecuteCustomContextMenuCommand(
 300       int action,
 301       const CustomContextMenuContext& context) override;
 302   gfx::NativeView GetNativeView() override;
 303   gfx::NativeView GetContentNativeView() override;
 304   gfx::NativeWindow GetTopLevelNativeWindow() override;
 305   gfx::Rect GetContainerBounds() override;
 306   gfx::Rect GetViewBounds() override;
 307   DropData* GetDropData() override;
 308   void Focus() override;
 309   void SetInitialFocus() override;
 310   void StoreFocus() override;
 311   void RestoreFocus() override;
 312   void FocusThroughTabTraversal(bool reverse) override;
 313   bool ShowingInterstitialPage() const override;
 314   InterstitialPage* GetInterstitialPage() const override;
 315   bool IsSavable() override;
 316   void OnSavePage() override;
 317   bool SavePage(const base::FilePath& main_file,
 318                 const base::FilePath& dir_path,
 319                 SavePageType save_type) override;
 320   void SaveFrame(const GURL& url, const Referrer& referrer) override;
 321   void SaveFrameWithHeaders(const GURL& url,
 322                             const Referrer& referrer,
 323                             const std::string& headers) override;
 324   void GenerateMHTML(const base::FilePath& file,
 325                      const base::Callback<void(int64)>& callback) override;
 326   const std::string& GetContentsMimeType() const override;
 327   bool WillNotifyDisconnection() const override;
 328   void SetOverrideEncoding(const std::string& encoding) override;
 329   void ResetOverrideEncoding() override;
 330   RendererPreferences* GetMutableRendererPrefs() override;
 331   void Close() override;
 332   void SystemDragEnded() override;
 333   void UserGestureDone() override;
 334   void SetClosedByUserGesture(bool value) override;
 335   bool GetClosedByUserGesture() const override;
 336   void ViewSource() override;
 337   void ViewFrameSource(const GURL& url, const PageState& page_state) override;
 338   int GetMinimumZoomPercent() const override;
 339   int GetMaximumZoomPercent() const override;
 340   void ResetPageScale() override;
 341   gfx::Size GetPreferredSize() const override;
 342   bool GotResponseToLockMouseRequest(bool allowed) override;
 343   bool HasOpener() const override;
 344   WebContents* GetOpener() const override;
 345   void DidChooseColorInColorChooser(SkColor color) override;
 346   void DidEndColorChooser() override;
 347   int DownloadImage(const GURL& url,
 348                     bool is_favicon,
 349                     uint32_t max_bitmap_size,
 350                     bool bypass_cache,
 351                     const ImageDownloadCallback& callback) override;
 352   bool IsSubframe() const override;
 353   void Find(int request_id,
 354             const base::string16& search_text,
 355             const blink::WebFindOptions& options) override;
 356   void StopFinding(StopFindAction action) override;
 357   void InsertCSS(const std::string& css) override;
 358   bool WasRecentlyAudible() override;
 359   void GetManifest(const GetManifestCallback&) override;
 360   void ExitFullscreen() override;
 361 #if defined(OS_ANDROID)
 362   base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() override;
 363   virtual WebContentsAndroid* GetWebContentsAndroid();
 364 #elif defined(OS_MACOSX)
 365   void SetAllowOtherViews(bool allow) override;
 366   bool GetAllowOtherViews() override;
 367 #endif
 368
 369   // Implementation of PageNavigator.
 370   WebContents* OpenURL(const OpenURLParams& params) override;
 371
 372   // Implementation of IPC::Sender.
 373   bool Send(IPC::Message* message) override;
 374
 375   // RenderFrameHostDelegate ---------------------------------------------------
 376   bool OnMessageReceived(RenderFrameHost* render_frame_host,
 377                          const IPC::Message& message) override;
 378   const GURL& GetMainFrameLastCommittedURL() const override;
 379   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
 380   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
 381   void SwappedOut(RenderFrameHost* render_frame_host) override;
 382   void DidDeferAfterResponseStarted(
 383       const TransitionLayerData& transition_data) override;
 384   bool WillHandleDeferAfterResponseStarted() override;
 385   void WorkerCrashed(RenderFrameHost* render_frame_host) override;
 386   void ShowContextMenu(RenderFrameHost* render_frame_host,
 387                        const ContextMenuParams& params) override;
 388   void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
 389                             const base::string16& message,
 390                             const base::string16& default_prompt,
 391                             const GURL& frame_url,
 392                             JavaScriptMessageType type,
 393                             IPC::Message* reply_msg) override;
 394   void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
 395                               const base::string16& message,
 396                               bool is_reload,
 397                               IPC::Message* reply_msg) override;
 398   void DidAccessInitialDocument() override;
 399   void DidChangeName(RenderFrameHost* render_frame_host,
 400                      const std::string& name) override;
 401   void DidDisownOpener(RenderFrameHost* render_frame_host) override;
 402   void DocumentOnLoadCompleted(RenderFrameHost* render_frame_host) override;
 403   void UpdateTitle(RenderFrameHost* render_frame_host,
 404                    int32 page_id,
 405                    const base::string16& title,
 406                    base::i18n::TextDirection title_direction) override;
 407   void UpdateEncoding(RenderFrameHost* render_frame_host,
 408                       const std::string& encoding) override;
 409   WebContents* GetAsWebContents() override;
 410   bool IsNeverVisible() override;
 411   AccessibilityMode GetAccessibilityMode() const override;
 412   void AccessibilityEventReceived(
 413       const std::vector<AXEventNotificationDetails>& details) override;
 414   RenderFrameHost* GetGuestByInstanceID(
 415       RenderFrameHost* render_frame_host,
 416       int browser_plugin_instance_id) override;
 417   GeolocationServiceContext* GetGeolocationServiceContext() override;
 418   void EnterFullscreenMode(const GURL& origin) override;
 419   void ExitFullscreenMode() override;
 420   bool ShouldRouteMessageEvent(
 421       RenderFrameHost* target_rfh,
 422       SiteInstance* source_site_instance) const override;
 423   int EnsureOpenerRenderViewsExist(RenderFrameHost* source_rfh) override;
 424 #if defined(OS_WIN)
 425   gfx::NativeViewAccessible GetParentNativeViewAccessible() override;
 426 #endif
 427
 428   // RenderViewHostDelegate ----------------------------------------------------
 429   RenderViewHostDelegateView* GetDelegateView() override;
 430   bool OnMessageReceived(RenderViewHost* render_view_host,
 431                          const IPC::Message& message) override;
 432   // RenderFrameHostDelegate has the same method, so list it there because this
 433   // interface is going away.
 434   // virtual WebContents* GetAsWebContents() override;
 435   gfx::Rect GetRootWindowResizerRect() const override;
 436   void RenderViewCreated(RenderViewHost* render_view_host) override;
 437   void RenderViewReady(RenderViewHost* render_view_host) override;
 438   void RenderViewTerminated(RenderViewHost* render_view_host,
 439                             base::TerminationStatus status,
 440                             int error_code) override;
 441   void RenderViewDeleted(RenderViewHost* render_view_host) override;
 442   void UpdateState(RenderViewHost* render_view_host,
 443                    int32 page_id,
 444                    const PageState& page_state) override;
 445   void UpdateTargetURL(RenderViewHost* render_view_host,
 446                        const GURL& url) override;
 447   void Close(RenderViewHost* render_view_host) override;
 448   void RequestMove(const gfx::Rect& new_bounds) override;
 449   void DidCancelLoading() override;
 450   void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) override;
 451   void RouteCloseEvent(RenderViewHost* rvh) override;
 452   bool AddMessageToConsole(int32 level,
 453                            const base::string16& message,
 454                            int32 line_no,
 455                            const base::string16& source_id) override;
 456   RendererPreferences GetRendererPrefs(
 457       BrowserContext* browser_context) const override;
 458   void OnUserGesture() override;
 459   void OnIgnoredUIEvent() override;
 460   void RendererUnresponsive(RenderViewHost* render_view_host) override;
 461   void RendererResponsive(RenderViewHost* render_view_host) override;
 462   void LoadStateChanged(const GURL& url,
 463                         const net::LoadStateWithParam& load_state,
 464                         uint64 upload_position,
 465                         uint64 upload_size) override;
 466   void Activate() override;
 467   void Deactivate() override;
 468   void LostCapture() override;
 469   void RunFileChooser(RenderViewHost* render_view_host,
 470                       const FileChooserParams& params) override;
 471   bool IsFullscreenForCurrentTab() const override;
 472   blink::WebDisplayMode GetDisplayMode() const override;
 473   void UpdatePreferredSize(const gfx::Size& pref_size) override;
 474   void ResizeDueToAutoResize(const gfx::Size& new_size) override;
 475   void RequestToLockMouse(bool user_gesture,
 476                           bool last_unlocked_by_target) override;
 477   void LostMouseLock() override;
 478   void CreateNewWindow(
 479       int render_process_id,
 480       int route_id,
 481       int main_frame_route_id,
 482       const ViewHostMsg_CreateWindow_Params& params,
 483       SessionStorageNamespace* session_storage_namespace) override;
 484   void CreateNewWidget(int render_process_id,
 485                        int route_id,
 486                        blink::WebPopupType popup_type) override;
 487   void CreateNewFullscreenWidget(int render_process_id, int route_id) override;
 488   void ShowCreatedWindow(int route_id,
 489                          WindowOpenDisposition disposition,
 490                          const gfx::Rect& initial_rect,
 491                          bool user_gesture) override;
 492   void ShowCreatedWidget(int route_id, const gfx::Rect& initial_rect) override;
 493   void ShowCreatedFullscreenWidget(int route_id) override;
 494   void RequestMediaAccessPermission(
 495       const MediaStreamRequest& request,
 496       const MediaResponseCallback& callback) override;
 497   bool CheckMediaAccessPermission(const GURL& security_origin,
 498                                   MediaStreamType type) override;
 499   SessionStorageNamespace* GetSessionStorageNamespace(
 500       SiteInstance* instance) override;
 501   SessionStorageNamespaceMap GetSessionStorageNamespaceMap() override;
 502   FrameTree* GetFrameTree() override;
 503   void SetIsVirtualKeyboardRequested(bool requested) override;
 504   bool IsVirtualKeyboardRequested() override;
 505
 506
 507   // NavigatorDelegate ---------------------------------------------------------
 508
 509   void DidStartProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 510                                const GURL& validated_url,
 511                                bool is_error_page,
 512                                bool is_iframe_srcdoc) override;
 513   void DidStartNavigationTransition(
 514       RenderFrameHostImpl* render_frame_host) override;
 515   void DidFailProvisionalLoadWithError(
 516       RenderFrameHostImpl* render_frame_host,
 517       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
 518       override;
 519   void DidFailLoadWithError(RenderFrameHostImpl* render_frame_host,
 520                             const GURL& url,
 521                             int error_code,
 522                             const base::string16& error_description) override;
 523   void DidCommitProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 524                                 const GURL& url,
 525                                 ui::PageTransition transition_type) override;
 526   void DidNavigateMainFramePreCommit(bool navigation_is_within_page) override;
 527   void DidNavigateMainFramePostCommit(
 528       RenderFrameHostImpl* render_frame_host,
 529       const LoadCommittedDetails& details,
 530       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 531   void DidNavigateAnyFramePostCommit(
 532       RenderFrameHostImpl* render_frame_host,
 533       const LoadCommittedDetails& details,
 534       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 535   void SetMainFrameMimeType(const std::string& mime_type) override;
 536   bool CanOverscrollContent() const override;
 537   void NotifyChangedNavigationState(InvalidateTypes changed_flags) override;
 538   void AboutToNavigateRenderFrame(
 539       RenderFrameHostImpl* old_host,
 540       RenderFrameHostImpl* new_host) override;
 541   void DidStartNavigationToPendingEntry(
 542       const GURL& url,
 543       NavigationController::ReloadType reload_type) override;
 544   void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
 545                       const OpenURLParams& params) override;
 546   bool ShouldPreserveAbortedURLs() override;
 547   void DidStartLoading(FrameTreeNode* frame_tree_node,
 548                        bool to_different_document) override;
 549   void DidStopLoading() override;
 550   void DidChangeLoadProgress() override;
 551
 552   // RenderWidgetHostDelegate --------------------------------------------------
 553
 554   void RenderWidgetDeleted(RenderWidgetHostImpl* render_widget_host) override;
 555   void RenderWidgetGotFocus(RenderWidgetHostImpl* render_widget_host) override;
 556   void RenderWidgetWasResized(RenderWidgetHostImpl* render_widget_host,
 557                               bool width_changed) override;
 558   void ScreenInfoChanged() override;
 559   bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
 560                               bool* is_keyboard_shortcut) override;
 561   void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) override;
 562   bool HandleWheelEvent(const blink::WebMouseWheelEvent& event) override;
 563   bool PreHandleGestureEvent(const blink::WebGestureEvent& event) override;
 564   void DidSendScreenRects(RenderWidgetHostImpl* rwh) override;
 565   BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() override;
 566   BrowserAccessibilityManager* GetOrCreateRootBrowserAccessibilityManager()
 567       override;
 568
 569   // RenderFrameHostManager::Delegate ------------------------------------------
 570
 571   bool CreateRenderViewForRenderManager(
 572       RenderViewHost* render_view_host,
 573       int opener_route_id,
 574       int proxy_routing_id,
 575       bool for_main_frame_navigation) override;
 576   bool CreateRenderFrameForRenderManager(RenderFrameHost* render_frame_host,
 577                                          int parent_routing_id,
 578                                          int proxy_routing_id) override;
 579   void BeforeUnloadFiredFromRenderManager(
 580       bool proceed,
 581       const base::TimeTicks& proceed_time,
 582       bool* proceed_to_fire_unload) override;
 583   void RenderProcessGoneFromRenderManager(
 584       RenderViewHost* render_view_host) override;
 585   void UpdateRenderViewSizeForRenderManager() override;
 586   void CancelModalDialogsForRenderManager() override;
 587   void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
 588                                       RenderFrameHost* new_host,
 589                                       bool is_main_frame) override;
 590   void NotifyMainFrameSwappedFromRenderManager(
 591       RenderViewHost* old_host,
 592       RenderViewHost* new_host) override;
 593   int CreateOpenerRenderViewsForRenderManager(SiteInstance* instance) override;
 594   NavigationControllerImpl& GetControllerForRenderManager() override;
 595   scoped_ptr<WebUIImpl> CreateWebUIForRenderManager(const GURL& url) override;
 596   NavigationEntry* GetLastCommittedNavigationEntryForRenderManager() override;
 597   bool FocusLocationBarByDefault() override;
 598   void SetFocusToLocationBar(bool select_all) override;
 599   bool IsHidden() override;
 600
 601   // NotificationObserver ------------------------------------------------------
 602
 603   void Observe(int type,
 604                const NotificationSource& source,
 605                const NotificationDetails& details) override;
 606
 607   // NavigationControllerDelegate ----------------------------------------------
 608
 609   WebContents* GetWebContents() override;
 610   void NotifyNavigationEntryCommitted(
 611       const LoadCommittedDetails& load_details) override;
 612
 613   // Invoked before a form repost warning is shown.
 614   void NotifyBeforeFormRepostWarningShow() override;
 615
 616   // Activate this WebContents and show a form repost warning.
 617   void ActivateAndShowRepostFormWarningDialog() override;
 618
 619   // Whether the initial empty page of this view has been accessed by another
 620   // page, making it unsafe to show the pending URL. Always false after the
 621   // first commit.
 622   bool HasAccessedInitialDocument() override;
 623
 624   // Updates the max page ID for the current SiteInstance in this
 625   // WebContentsImpl to be at least |page_id|.
 626   void UpdateMaxPageID(int32 page_id) override;
 627
 628   // Updates the max page ID for the given SiteInstance in this WebContentsImpl
 629   // to be at least |page_id|.
 630   void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
 631                                       int32 page_id) override;
 632
 633   // Copy the current map of SiteInstance ID to max page ID from another tab.
 634   // This is necessary when this tab adopts the NavigationEntries from
 635   // |web_contents|.
 636   void CopyMaxPageIDsFrom(WebContents* web_contents) override;
 637
 638   // Called by the NavigationController to cause the WebContentsImpl to navigate
 639   // to the current pending entry. The NavigationController should be called
 640   // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
 641   // The callbacks can be inside of this function, or at some future time.
 642   //
 643   // The entry has a PageID of -1 if newly created (corresponding to navigation
 644   // to a new URL).
 645   //
 646   // If this method returns false, then the navigation is discarded (equivalent
 647   // to calling DiscardPendingEntry on the NavigationController).
 648   bool NavigateToPendingEntry(
 649       NavigationController::ReloadType reload_type) override;
 650
 651   // Sets the history for this WebContentsImpl to |history_length| entries, with
 652   // an offset of |history_offset|.
 653   void SetHistoryOffsetAndLength(int history_offset,
 654                                  int history_length) override;
 655
 656   // Called by InterstitialPageImpl when it creates a RenderFrameHost.
 657   void RenderFrameForInterstitialPageCreated(
 658       RenderFrameHost* render_frame_host) override;
 659
 660   // Sets the passed interstitial as the currently showing interstitial.
 661   // No interstitial page should already be attached.
 662   void AttachInterstitialPage(InterstitialPageImpl* interstitial_page) override;
 663
 664   // Unsets the currently showing interstitial.
 665   void DetachInterstitialPage() override;
 666
 667   // Changes the IsLoading state and notifies the delegate as needed.
 668   // |details| is used to provide details on the load that just finished
 669   // (but can be null if not applicable).
 670   void SetIsLoading(bool is_loading,
 671                     bool to_different_document,
 672                     LoadNotificationDetails* details) override;
 673
 674   typedef base::Callback<void(WebContents*)> CreatedCallback;
 675
 676   // Requests the renderer to move the selection extent to a new position.
 677   void MoveRangeSelectionExtent(const gfx::Point& extent);
 678
 679   // Requests the renderer to select the region between two points in the
 680   // currently focused frame.
 681   void SelectRange(const gfx::Point& base, const gfx::Point& extent);
 682
 683   // Notifies the main frame that it can continue navigation (if it was deferred
 684   // immediately at first response).
 685   void ResumeResponseDeferredAtStart();
 686
 687   // Forces overscroll to be disabled (used by touch emulation).
 688   void SetForceDisableOverscrollContent(bool force_disable);
 689
 690   AudioStateProvider* audio_state_provider() {
 691     return audio_state_provider_.get();
 692   }
 693
 694   bool has_audio_power_save_blocker_for_testing() const {
 695     return audio_power_save_blocker_;
 696   }
 697
 698   bool has_video_power_save_blocker_for_testing() const {
 699     return video_power_save_blocker_;
 700   }
 701
 702 #if defined(ENABLE_BROWSER_CDMS)
 703   MediaWebContentsObserver* media_web_contents_observer() {
 704     return media_web_contents_observer_.get();
 705   }
 706 #endif
 707
 708  private:
 709   friend class WebContentsObserver;
 710   friend class WebContents;  // To implement factory methods.
 711
 712   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
 713   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
 714   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
 715   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 716                            CrossSiteCantPreemptAfterUnload);
 717   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
 718   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
 719   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
 720   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
 721   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
 722   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
 723   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
 724   FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest,
 725                            CrossSiteIframeAccessibility);
 726
 727   // So InterstitialPageImpl can access SetIsLoading.
 728   friend class InterstitialPageImpl;
 729
 730   // TODO(brettw) TestWebContents shouldn't exist!
 731   friend class TestWebContents;
 732
 733   class DestructionObserver;
 734
 735   // See WebContents::Create for a description of these parameters.
 736   WebContentsImpl(BrowserContext* browser_context,
 737                   WebContentsImpl* opener);
 738
 739   // Add and remove observers for page navigation notifications. The order in
 740   // which notifications are sent to observers is undefined. Clients must be
 741   // sure to remove the observer before they go away.
 742   void AddObserver(WebContentsObserver* observer);
 743   void RemoveObserver(WebContentsObserver* observer);
 744
 745   // Clears this tab's opener if it has been closed.
 746   void OnWebContentsDestroyed(WebContentsImpl* web_contents);
 747
 748   // Creates and adds to the map a destruction observer watching |web_contents|.
 749   // No-op if such an observer already exists.
 750   void AddDestructionObserver(WebContentsImpl* web_contents);
 751
 752   // Deletes and removes from the map a destruction observer
 753   // watching |web_contents|. No-op if there is no such observer.
 754   void RemoveDestructionObserver(WebContentsImpl* web_contents);
 755
 756   // Traverses all the RenderFrameHosts in the FrameTree and creates a set
 757   // all the unique RenderWidgetHostViews.
 758   std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
 759
 760   // Callback function when showing JavaScript dialogs.  Takes in a routing ID
 761   // pair to identify the RenderFrameHost that opened the dialog, because it's
 762   // possible for the RenderFrameHost to be deleted by the time this is called.
 763   void OnDialogClosed(int render_process_id,
 764                       int render_frame_id,
 765                       IPC::Message* reply_msg,
 766                       bool dialog_was_suppressed,
 767                       bool success,
 768                       const base::string16& user_input);
 769
 770   bool OnMessageReceived(RenderViewHost* render_view_host,
 771                          RenderFrameHost* render_frame_host,
 772                          const IPC::Message& message);
 773
 774   // Checks whether render_frame_message_source_ is set to non-null value,
 775   // otherwise it terminates the main frame renderer process.
 776   bool HasValidFrameSource();
 777
 778   // IPC message handlers.
 779   void OnThemeColorChanged(SkColor theme_color);
 780   void OnDidLoadResourceFromMemoryCache(const GURL& url,
 781                                         const std::string& security_info,
 782                                         const std::string& http_request,
 783                                         const std::string& mime_type,
 784                                         ResourceType resource_type);
 785   void OnDidDisplayInsecureContent();
 786   void OnDidRunInsecureContent(const std::string& security_origin,
 787                                const GURL& target_url);
 788   void OnDocumentLoadedInFrame();
 789   void OnDidFinishLoad(const GURL& url);
 790   void OnGoToEntryAtOffset(int offset);
 791   void OnUpdateZoomLimits(int minimum_percent,
 792                           int maximum_percent);
 793   void OnEnumerateDirectory(int request_id, const base::FilePath& path);
 794
 795   void OnRegisterProtocolHandler(const std::string& protocol,
 796                                  const GURL& url,
 797                                  const base::string16& title,
 798                                  bool user_gesture);
 799   void OnUnregisterProtocolHandler(const std::string& protocol,
 800                                    const GURL& url,
 801                                    bool user_gesture);
 802   void OnFindReply(int request_id,
 803                    int number_of_matches,
 804                    const gfx::Rect& selection_rect,
 805                    int active_match_ordinal,
 806                    bool final_update);
 807 #if defined(OS_ANDROID)
 808   void OnFindMatchRectsReply(int version,
 809                              const std::vector<gfx::RectF>& rects,
 810                              const gfx::RectF& active_rect);
 811
 812   void OnOpenDateTimeDialog(
 813       const ViewHostMsg_DateTimeDialogValue_Params& value);
 814 #endif
 815   void OnDomOperationResponse(const std::string& json_string,
 816                               int automation_id);
 817   void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
 818   void OnOpenColorChooser(int color_chooser_id,
 819                           SkColor color,
 820                           const std::vector<ColorSuggestion>& suggestions);
 821   void OnEndColorChooser(int color_chooser_id);
 822   void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
 823   void OnWebUISend(const GURL& source_url,
 824                    const std::string& name,
 825                    const base::ListValue& args);
 826 #if defined(ENABLE_PLUGINS)
 827   void OnPepperPluginHung(int plugin_child_id,
 828                           const base::FilePath& path,
 829                           bool is_hung);
 830   void OnPluginCrashed(const base::FilePath& plugin_path,
 831                        base::ProcessId plugin_pid);
 832   void OnRequestPpapiBrokerPermission(int routing_id,
 833                                       const GURL& url,
 834                                       const base::FilePath& plugin_path);
 835
 836   // Callback function when requesting permission to access the PPAPI broker.
 837   // |result| is true if permission was granted.
 838   void OnPpapiBrokerPermissionResult(int routing_id, bool result);
 839
 840   void OnBrowserPluginMessage(RenderFrameHost* render_frame_host,
 841                               const IPC::Message& message);
 842 #endif  // defined(ENABLE_PLUGINS)
 843   void OnDidDownloadImage(int id,
 844                           int http_status_code,
 845                           const GURL& image_url,
 846                           const std::vector<SkBitmap>& bitmaps,
 847                           const std::vector<gfx::Size>& original_bitmap_sizes);
 848   void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
 849   void OnFirstVisuallyNonEmptyPaint();
 850   void OnMediaPlayingNotification(int64 player_cookie,
 851                                   bool has_video,
 852                                   bool has_audio,
 853                                   bool is_remote);
 854   void OnMediaPausedNotification(int64 player_cookie);
 855   void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
 856                                const base::string16& main_text,
 857                                const base::string16& sub_text);
 858   void OnHideValidationMessage();
 859   void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
 860
 861   // Called by derived classes to indicate that we're no longer waiting for a
 862   // response. This won't actually update the throbber, but it will get picked
 863   // up at the next animation step if the throbber is going.
 864   void SetNotWaitingForResponse() { waiting_for_response_ = false; }
 865
 866   // Navigation helpers --------------------------------------------------------
 867   //
 868   // These functions are helpers for Navigate() and DidNavigate().
 869
 870   // Handles post-navigation tasks in DidNavigate AFTER the entry has been
 871   // committed to the navigation controller. Note that the navigation entry is
 872   // not provided since it may be invalid/changed after being committed. The
 873   // current navigation entry is in the NavigationController at this point.
 874
 875   // If our controller was restored, update the max page ID associated with the
 876   // given RenderViewHost to be larger than the number of restored entries.
 877   // This is called in CreateRenderView before any navigations in the RenderView
 878   // have begun, to prevent any races in updating RenderView::next_page_id.
 879   void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
 880
 881   // Saves the given title to the navigation entry and does associated work. It
 882   // will update history and the view for the new title, and also synthesize
 883   // titles for file URLs that have none (so we require that the URL of the
 884   // entry already be set).
 885   //
 886   // This is used as the backend for state updates, which include a new title,
 887   // or the dedicated set title message. It returns true if the new title is
 888   // different and was therefore updated.
 889   bool UpdateTitleForEntry(NavigationEntryImpl* entry,
 890                            const base::string16& title);
 891
 892   // Recursively creates swapped out RenderViews for this tab's opener chain
 893   // (including this tab) in the given SiteInstance, allowing other tabs to send
 894   // cross-process JavaScript calls to their opener(s).  Returns the route ID of
 895   // this tab's RenderView for |instance|.
 896   int CreateOpenerRenderViews(SiteInstance* instance);
 897
 898   // Helper for CreateNewWidget/CreateNewFullscreenWidget.
 899   void CreateNewWidget(int render_process_id,
 900                        int route_id,
 901                        bool is_fullscreen,
 902                        blink::WebPopupType popup_type);
 903
 904   // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
 905   void ShowCreatedWidget(int route_id,
 906                          bool is_fullscreen,
 907                          const gfx::Rect& initial_rect);
 908
 909   // Finds the new RenderWidgetHost and returns it. Note that this can only be
 910   // called once as this call also removes it from the internal map.
 911   RenderWidgetHostView* GetCreatedWidget(int route_id);
 912
 913   // Finds the new WebContentsImpl by route_id, initializes it for
 914   // renderer-initiated creation, and returns it. Note that this can only be
 915   // called once as this call also removes it from the internal map.
 916   WebContentsImpl* GetCreatedWindow(int route_id);
 917
 918   // Tracking loading progress -------------------------------------------------
 919
 920   // Resets the tracking state of the current load progress.
 921   void ResetLoadProgressState();
 922
 923   // Notifies the delegate that the load progress was updated.
 924   void SendChangeLoadProgress();
 925
 926   // Misc non-view stuff -------------------------------------------------------
 927
 928   // Sets the history for a specified RenderViewHost to |history_length|
 929   // entries, with an offset of |history_offset|.
 930   void SetHistoryOffsetAndLengthForView(RenderViewHost* render_view_host,
 931                                         int history_offset,
 932                                         int history_length);
 933
 934   // Helper functions for sending notifications.
 935   void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
 936   void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
 937   void NotifyDisconnected();
 938
 939   void SetEncoding(const std::string& encoding);
 940
 941   // TODO(creis): This should take in a FrameTreeNode to know which node's
 942   // render manager to return.  For now, we just return the root's.
 943   RenderFrameHostManager* GetRenderManager() const;
 944
 945   // Removes browser plugin embedder if there is one.
 946   void RemoveBrowserPluginEmbedder();
 947
 948   // Clear |render_frame_host|'s tracking entry for its power save blockers.
 949   void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
 950
 951   // Clear tracking entries for all RenderFrameHosts, clears
 952   // |audio_power_save_blocker_| and |video_power_save_blocker_|.
 953   void ClearAllPowerSaveBlockers();
 954
 955   // Creates an audio or video power save blocker respectively.
 956   void CreateAudioPowerSaveBlocker();
 957   void CreateVideoPowerSaveBlocker();
 958
 959   // Releases the audio power save blockers if |active_audio_players_| is empty.
 960   // Likewise, releases the video power save blockers if |active_video_players_|
 961   // is empty.
 962   void MaybeReleasePowerSaveBlockers();
 963
 964   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
 965   gfx::Size GetSizeForNewRenderView();
 966
 967   void OnFrameRemoved(RenderFrameHost* render_frame_host);
 968
 969   // Helper method that's called whenever |preferred_size_| or
 970   // |preferred_size_for_capture_| changes, to propagate the new value to the
 971   // |delegate_|.
 972   void OnPreferredSizeChanged(const gfx::Size& old_size);
 973
 974   // Helper methods for adding or removing player entries in |player_map| under
 975   // the key |render_frame_message_source_|.
 976   typedef std::vector<int64> PlayerList;
 977   typedef std::map<uintptr_t, PlayerList> ActiveMediaPlayerMap;
 978   void AddMediaPlayerEntry(int64 player_cookie,
 979                            ActiveMediaPlayerMap* player_map);
 980   void RemoveMediaPlayerEntry(int64 player_cookie,
 981                               ActiveMediaPlayerMap* player_map);
 982   // Removes all entries from |player_map| for |render_frame_host|.
 983   void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host,
 984                                    ActiveMediaPlayerMap* player_map);
 985
 986   // Data for core operation ---------------------------------------------------
 987
 988   // Delegate for notifying our owner about stuff. Not owned by us.
 989   WebContentsDelegate* delegate_;
 990
 991   // Handles the back/forward list and loading.
 992   NavigationControllerImpl controller_;
 993
 994   // The corresponding view.
 995   scoped_ptr<WebContentsView> view_;
 996
 997   // The view of the RVHD. Usually this is our WebContentsView implementation,
 998   // but if an embedder uses a different WebContentsView, they'll need to
 999   // provide this.
1000   RenderViewHostDelegateView* render_view_host_delegate_view_;
1001
1002   // Tracks created WebContentsImpl objects that have not been shown yet. They
1003   // are identified by the route ID passed to CreateNewWindow.
1004   typedef std::map<int, WebContentsImpl*> PendingContents;
1005   PendingContents pending_contents_;
1006
1007   // These maps hold on to the widgets that we created on behalf of the renderer
1008   // that haven't shown yet.
1009   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
1010   PendingWidgetViews pending_widget_views_;
1011
1012   typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
1013   DestructionObservers destruction_observers_;
1014
1015   // A list of observers notified when page state changes. Weak references.
1016   // This MUST be listed above frame_tree_ since at destruction time the
1017   // latter might cause RenderViewHost's destructor to call us and we might use
1018   // the observer list then.
1019   ObserverList<WebContentsObserver> observers_;
1020
1021   // The tab that opened this tab, if any.  Will be set to null if the opener
1022   // is closed.
1023   WebContentsImpl* opener_;
1024
1025   // True if this tab was opened by another tab. This is not unset if the opener
1026   // is closed.
1027   bool created_with_opener_;
1028
1029 #if defined(OS_WIN)
1030   gfx::NativeViewAccessible accessible_parent_;
1031 #endif
1032
1033   // Helper classes ------------------------------------------------------------
1034
1035   // Tracking variables and associated power save blockers for media playback.
1036   ActiveMediaPlayerMap active_audio_players_;
1037   ActiveMediaPlayerMap active_video_players_;
1038   scoped_ptr<PowerSaveBlocker> audio_power_save_blocker_;
1039   scoped_ptr<PowerSaveBlocker> video_power_save_blocker_;
1040
1041   // Tells whether this WebContents is actively producing sound.
1042   // Order is important: the |frame_tree_| destruction uses
1043   // |audio_state_provider_|.
1044   scoped_ptr<AudioStateProvider> audio_state_provider_;
1045
1046   // Manages the frame tree of the page and process swaps in each node.
1047   FrameTree frame_tree_;
1048
1049   // SavePackage, lazily created.
1050   scoped_refptr<SavePackage> save_package_;
1051
1052   // Data for loading state ----------------------------------------------------
1053
1054   // Indicates whether we're currently loading a resource.
1055   bool is_loading_;
1056
1057   // Indicates whether the current load is to a different document. Only valid
1058   // if is_loading_ is true.
1059   bool is_load_to_different_document_;
1060
1061   // Indicates if the tab is considered crashed.
1062   base::TerminationStatus crashed_status_;
1063   int crashed_error_code_;
1064
1065   // Whether this WebContents is waiting for a first-response for the
1066   // main resource of the page. This controls whether the throbber state is
1067   // "waiting" or "loading."
1068   bool waiting_for_response_;
1069
1070   // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1071   // to a given tab and SiteInstance, and must be valid for the lifetime of the
1072   // WebContentsImpl.
1073   std::map<int32, int32> max_page_ids_;
1074
1075   // The current load state and the URL associated with it.
1076   net::LoadStateWithParam load_state_;
1077   base::string16 load_state_host_;
1078
1079   base::TimeTicks loading_last_progress_update_;
1080
1081   // Upload progress, for displaying in the status bar.
1082   // Set to zero when there is no significant upload happening.
1083   uint64 upload_size_;
1084   uint64 upload_position_;
1085
1086   // Data for current page -----------------------------------------------------
1087
1088   // When a title cannot be taken from any entry, this title will be used.
1089   base::string16 page_title_when_no_navigation_entry_;
1090
1091   // When a navigation occurs, we record its contents MIME type. It can be
1092   // used to check whether we can do something for some special contents.
1093   std::string contents_mime_type_;
1094
1095   // The last reported character encoding, not canonicalized.
1096   std::string last_reported_encoding_;
1097
1098   // The canonicalized character encoding.
1099   std::string canonical_encoding_;
1100
1101   // True if this is a secure page which displayed insecure content.
1102   bool displayed_insecure_content_;
1103
1104   // Whether the initial empty page has been accessed by another page, making it
1105   // unsafe to show the pending URL. Usually false unless another window tries
1106   // to modify the blank page.  Always false after the first commit.
1107   bool has_accessed_initial_document_;
1108
1109   // The theme color for the underlying document as specified
1110   // by theme-color meta tag.
1111   SkColor theme_color_;
1112
1113   // The last published theme color.
1114   SkColor last_sent_theme_color_;
1115
1116   // Data for misc internal state ----------------------------------------------
1117
1118   // When > 0, the WebContents is currently being captured (e.g., for
1119   // screenshots or mirroring); and the underlying RenderWidgetHost should not
1120   // be told it is hidden.
1121   int capturer_count_;
1122
1123   // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1124   bool should_normally_be_visible_;
1125
1126   // See getter above.
1127   bool is_being_destroyed_;
1128
1129   // Indicates whether we should notify about disconnection of this
1130   // WebContentsImpl. This is used to ensure disconnection notifications only
1131   // happen if a connection notification has happened and that they happen only
1132   // once.
1133   bool notify_disconnection_;
1134
1135   // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1136   // delegate of this WebContentsImpl is nulled before its destructor is called.
1137   JavaScriptDialogManager* dialog_manager_;
1138
1139   // Set to true when there is an active "before unload" dialog.  When true,
1140   // we've forced the throbber to start in Navigate, and we need to remember to
1141   // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1142   bool is_showing_before_unload_dialog_;
1143
1144   // Settings that get passed to the renderer process.
1145   RendererPreferences renderer_preferences_;
1146
1147   // The time that this WebContents was last made active. The initial value is
1148   // the WebContents creation time.
1149   base::TimeTicks last_active_time_;
1150
1151   // See description above setter.
1152   bool closed_by_user_gesture_;
1153
1154   // Minimum/maximum zoom percent.
1155   int minimum_zoom_percent_;
1156   int maximum_zoom_percent_;
1157
1158   // The intrinsic size of the page.
1159   gfx::Size preferred_size_;
1160
1161   // The preferred size for content screen capture.  When |capturer_count_| > 0,
1162   // this overrides |preferred_size_|.
1163   gfx::Size preferred_size_for_capture_;
1164
1165 #if defined(OS_ANDROID)
1166   // Date time chooser opened by this tab.
1167   // Only used in Android since all other platforms use a multi field UI.
1168   scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1169 #endif
1170
1171   // Holds information about a current color chooser dialog, if one is visible.
1172   struct ColorChooserInfo {
1173     ColorChooserInfo(int render_process_id,
1174                      int render_frame_id,
1175                      ColorChooser* chooser,
1176                      int identifier);
1177     ~ColorChooserInfo();
1178
1179     int render_process_id;
1180     int render_frame_id;
1181
1182     // Color chooser that was opened by this tab.
1183     scoped_ptr<ColorChooser> chooser;
1184
1185     // A unique identifier for the current color chooser.  Identifiers are
1186     // unique across a renderer process.  This avoids race conditions in
1187     // synchronizing the browser and renderer processes.  For example, if a
1188     // renderer closes one chooser and opens another, and simultaneously the
1189     // user picks a color in the first chooser, the IDs can be used to drop the
1190     // "chose a color" message rather than erroneously tell the renderer that
1191     // the user picked a color in the second chooser.
1192     int identifier;
1193   };
1194
1195   scoped_ptr<ColorChooserInfo> color_chooser_info_;
1196
1197   // Manages the embedder state for browser plugins, if this WebContents is an
1198   // embedder; NULL otherwise.
1199   scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1200   // Manages the guest state for browser plugin, if this WebContents is a guest;
1201   // NULL otherwise.
1202   scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1203
1204 #if defined(ENABLE_PLUGINS)
1205   // Manages the whitelist of plugin content origins exempt from power saving.
1206   scoped_ptr<PluginContentOriginWhitelist> plugin_content_origin_whitelist_;
1207 #endif
1208
1209   // This must be at the end, or else we might get notifications and use other
1210   // member variables that are gone.
1211   NotificationRegistrar registrar_;
1212
1213   // Used during IPC message dispatching from the RenderView/RenderFrame so that
1214   // the handlers can get a pointer to the RVH through which the message was
1215   // received.
1216   RenderViewHost* render_view_message_source_;
1217   RenderFrameHost* render_frame_message_source_;
1218
1219   // All live RenderWidgetHostImpls that are created by this object and may
1220   // outlive it.
1221   std::set<RenderWidgetHostImpl*> created_widgets_;
1222
1223   // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1224   int fullscreen_widget_routing_id_;
1225
1226   // At the time the fullscreen widget was being shut down, did it have focus?
1227   // This is used to restore focus to the WebContentsView after both: 1) the
1228   // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1229   // completed making layout changes to effect an exit from fullscreen mode.
1230   bool fullscreen_widget_had_focus_at_shutdown_;
1231
1232   // Maps the ids of pending image downloads to their callbacks
1233   typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1234   ImageDownloadMap image_download_map_;
1235
1236   // Whether this WebContents is responsible for displaying a subframe in a
1237   // different process from its parent page.
1238   bool is_subframe_;
1239
1240   // Whether overscroll should be unconditionally disabled.
1241   bool force_disable_overscroll_content_;
1242
1243   // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1244   bool last_dialog_suppressed_;
1245
1246   scoped_ptr<GeolocationServiceContext> geolocation_service_context_;
1247
1248   scoped_ptr<ScreenOrientationDispatcherHost>
1249       screen_orientation_dispatcher_host_;
1250
1251   scoped_ptr<ManifestManagerHost> manifest_manager_host_;
1252
1253   // The accessibility mode for all frames. This is queried when each frame
1254   // is created, and broadcast to all frames when it changes.
1255   AccessibilityMode accessibility_mode_;
1256
1257   // Created on-demand to mute all audio output from this WebContents.
1258   scoped_ptr<WebContentsAudioMuter> audio_muter_;
1259
1260   bool virtual_keyboard_requested_;
1261
1262 #if defined(ENABLE_BROWSER_CDMS)
1263   // Manages all the media player and CDM managers and forwards IPCs to them.
1264   scoped_ptr<MediaWebContentsObserver> media_web_contents_observer_;
1265 #endif
1266
1267   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1268
1269   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1270 };
1271
1272 // Dangerous methods which should never be made part of the public API, so we
1273 // grant their use only to an explicit friend list (c++ attorney/client idiom).
1274 class CONTENT_EXPORT WebContentsImpl::FriendZone {
1275  private:
1276   friend class TestNavigationObserver;
1277   friend class WebContentsAddedObserver;
1278   friend class ContentBrowserSanityChecker;
1279
1280   FriendZone();  // Not instantiable.
1281
1282   // Adds/removes a callback called on creation of each new WebContents.
1283   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
1284   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
1285
1286   DISALLOW_COPY_AND_ASSIGN(FriendZone);
1287 };
1288
1289 }  // namespace content
1290
1291 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_