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