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_stream_monitor.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 RenderWidgetHostInputEventRouter;
  65 class SavePackage;
  66 class ScreenOrientationDispatcherHost;
  67 class SiteInstance;
  68 class TestWebContents;
  69 class WebContentsAudioMuter;
  70 class WebContentsDelegate;
  71 class WebContentsImpl;
  72 class WebContentsObserver;
  73 class WebContentsView;
  74 class WebContentsViewDelegate;
  75 struct AXEventNotificationDetails;
  76 struct ColorSuggestion;
  77 struct FaviconURL;
  78 struct LoadNotificationDetails;
  79 struct ResourceRedirectDetails;
  80 struct ResourceRequestDetails;
  81
  82 #if defined(OS_ANDROID)
  83 class WebContentsAndroid;
  84 #endif
  85
  86 // Factory function for the implementations that content knows about. Takes
  87 // ownership of |delegate|.
  88 WebContentsView* CreateWebContentsView(
  89     WebContentsImpl* web_contents,
  90     WebContentsViewDelegate* delegate,
  91     RenderViewHostDelegateView** render_view_host_delegate_view);
  92
  93 class CONTENT_EXPORT WebContentsImpl
  94     : public NON_EXPORTED_BASE(WebContents),
  95       public NON_EXPORTED_BASE(RenderFrameHostDelegate),
  96       public RenderViewHostDelegate,
  97       public RenderWidgetHostDelegate,
  98       public RenderFrameHostManager::Delegate,
  99       public NotificationObserver,
 100       public NON_EXPORTED_BASE(NavigationControllerDelegate),
 101       public NON_EXPORTED_BASE(NavigatorDelegate) {
 102  public:
 103   class FriendZone;
 104
 105   ~WebContentsImpl() override;
 106
 107   static WebContentsImpl* CreateWithOpener(
 108       const WebContents::CreateParams& params,
 109       FrameTreeNode* opener);
 110
 111   static std::vector<WebContentsImpl*> GetAllWebContents();
 112
 113   static WebContentsImpl* FromFrameTreeNode(FrameTreeNode* frame_tree_node);
 114
 115   // Creates a swapped out RenderView. This is used by the browser plugin to
 116   // create a swapped out RenderView in the embedder render process for the
 117   // guest, to expose the guest's window object to the embedder.
 118   // This returns the routing ID of the newly created swapped out RenderView.
 119   int CreateSwappedOutRenderView(SiteInstance* instance);
 120
 121   // Complex initialization here. Specifically needed to avoid having
 122   // members call back into our virtual functions in the constructor.
 123   virtual void Init(const WebContents::CreateParams& params);
 124
 125   // Returns the SavePackage which manages the page saving job. May be NULL.
 126   SavePackage* save_package() const { return save_package_.get(); }
 127
 128 #if defined(OS_ANDROID)
 129   // In Android WebView, the RenderView needs created even there is no
 130   // navigation entry, this allows Android WebViews to use
 131   // javascript: URLs that load into the DOMWindow before the first page
 132   // load. This is not safe to do in any context that a web page could get a
 133   // reference to the DOMWindow before the first page load.
 134   bool CreateRenderViewForInitialEmptyDocument();
 135 #endif
 136
 137   // Expose the render manager for testing.
 138   // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
 139   RenderFrameHostManager* GetRenderManagerForTesting();
 140
 141   // Returns guest browser plugin object, or NULL if this WebContents is not a
 142   // guest.
 143   BrowserPluginGuest* GetBrowserPluginGuest() const;
 144
 145   // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
 146   // has a BrowserPluginGuest then that implies that it is being hosted by
 147   // a BrowserPlugin object in an embedder renderer process.
 148   void SetBrowserPluginGuest(BrowserPluginGuest* guest);
 149
 150   // Returns embedder browser plugin object, or NULL if this WebContents is not
 151   // an embedder.
 152   BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
 153
 154   // Creates a BrowserPluginEmbedder object for this WebContents if one doesn't
 155   // already exist.
 156   void CreateBrowserPluginEmbedderIfNecessary();
 157
 158   // Cancels modal dialogs in this WebContents, as well as in any browser
 159   // plugins it is hosting.
 160   void CancelActiveAndPendingDialogs();
 161
 162   // Gets the current fullscreen render widget's routing ID. Returns
 163   // MSG_ROUTING_NONE when there is no fullscreen render widget.
 164   int GetFullscreenWidgetRoutingID() const;
 165
 166   // Invoked when visible SSL state (as defined by SSLStatus) changes.
 167   void DidChangeVisibleSSLState();
 168
 169   // Informs the render view host and the BrowserPluginEmbedder, if present, of
 170   // a Drag Source End.
 171   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
 172       int screen_y, blink::WebDragOperation operation);
 173
 174   // A response has been received for a resource request.
 175   void DidGetResourceResponseStart(
 176       const ResourceRequestDetails& details);
 177
 178   // A redirect was received while requesting a resource.
 179   void DidGetRedirectForResourceRequest(
 180       RenderFrameHost* render_frame_host,
 181       const ResourceRedirectDetails& details);
 182
 183   // Notify observers that the web contents has been focused.
 184   void NotifyWebContentsFocused();
 185
 186   WebContentsView* GetView() const;
 187
 188   ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
 189     return screen_orientation_dispatcher_host_.get();
 190   }
 191
 192   bool should_normally_be_visible() { return should_normally_be_visible_; }
 193
 194   // Indicate if the window has been occluded, and pass this to the views, only
 195   // if there is no active capture going on (otherwise it is dropped on the
 196   // floor).
 197   void WasOccluded();
 198   void WasUnOccluded();
 199
 200   // Broadcasts the mode change to all frames.
 201   void SetAccessibilityMode(AccessibilityMode mode);
 202
 203   // Adds the given accessibility mode to the current accessibility mode
 204   // bitmap.
 205   void AddAccessibilityMode(AccessibilityMode mode);
 206
 207   // Removes the given accessibility mode from the current accessibility
 208   // mode bitmap, managing the bits that are shared with other modes such
 209   // that a bit will only be turned off when all modes that depend on it
 210   // have been removed.
 211   void RemoveAccessibilityMode(AccessibilityMode mode);
 212
 213   // Request a one-time snapshot of the accessibility tree without changing
 214   // the accessibility mode.
 215   using AXTreeSnapshotCallback =
 216       base::Callback<void(const ui::AXTreeUpdate<ui::AXNodeData>&)>;
 217   void RequestAXTreeSnapshot(AXTreeSnapshotCallback callback);
 218
 219   // WebContents ------------------------------------------------------
 220   WebContentsDelegate* GetDelegate() override;
 221   void SetDelegate(WebContentsDelegate* delegate) override;
 222   NavigationControllerImpl& GetController() override;
 223   const NavigationControllerImpl& GetController() const override;
 224   BrowserContext* GetBrowserContext() const override;
 225   const GURL& GetURL() const override;
 226   const GURL& GetVisibleURL() const override;
 227   const GURL& GetLastCommittedURL() const override;
 228   RenderProcessHost* GetRenderProcessHost() const override;
 229   RenderFrameHostImpl* GetMainFrame() override;
 230   RenderFrameHostImpl* GetFocusedFrame() override;
 231   void ForEachFrame(
 232       const base::Callback<void(RenderFrameHost*)>& on_frame) override;
 233   void SendToAllFrames(IPC::Message* message) override;
 234   RenderViewHostImpl* GetRenderViewHost() const override;
 235   int GetRoutingID() const override;
 236   RenderWidgetHostView* GetRenderWidgetHostView() const override;
 237   void ClosePage() override;
 238   RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const override;
 239   SkColor GetThemeColor() const override;
 240   WebUI* CreateSubframeWebUI(const GURL& url,
 241                              const std::string& frame_name) override;
 242   WebUI* GetWebUI() const override;
 243   WebUI* GetCommittedWebUI() const override;
 244   void SetUserAgentOverride(const std::string& override) override;
 245   const std::string& GetUserAgentOverride() const override;
 246   void EnableTreeOnlyAccessibilityMode() override;
 247   bool IsTreeOnlyAccessibilityModeForTesting() const override;
 248   bool IsFullAccessibilityModeForTesting() const override;
 249 #if defined(OS_WIN)
 250   void SetParentNativeViewAccessible(
 251       gfx::NativeViewAccessible accessible_parent) override;
 252 #endif
 253   const base::string16& GetTitle() const override;
 254   int32 GetMaxPageID() override;
 255   int32 GetMaxPageIDForSiteInstance(SiteInstance* site_instance) override;
 256   SiteInstanceImpl* GetSiteInstance() const override;
 257   SiteInstanceImpl* GetPendingSiteInstance() const override;
 258   bool IsLoading() const override;
 259   bool IsLoadingToDifferentDocument() const override;
 260   bool IsWaitingForResponse() const override;
 261   const net::LoadStateWithParam& GetLoadState() const override;
 262   const base::string16& GetLoadStateHost() const override;
 263   uint64 GetUploadSize() const override;
 264   uint64 GetUploadPosition() const override;
 265   std::set<GURL> GetSitesInTab() const override;
 266   const std::string& GetEncoding() const override;
 267   bool DisplayedInsecureContent() const override;
 268   void IncrementCapturerCount(const gfx::Size& capture_size) override;
 269   void DecrementCapturerCount() override;
 270   int GetCapturerCount() const override;
 271   bool IsAudioMuted() const override;
 272   void SetAudioMuted(bool mute) override;
 273   bool IsCrashed() const override;
 274   void SetIsCrashed(base::TerminationStatus status, int error_code) override;
 275   base::TerminationStatus GetCrashedStatus() const override;
 276   bool IsBeingDestroyed() const override;
 277   void NotifyNavigationStateChanged(InvalidateTypes changed_flags) override;
 278   base::TimeTicks GetLastActiveTime() const override;
 279   void SetLastActiveTime(base::TimeTicks last_active_time) override;
 280   void WasShown() override;
 281   void WasHidden() override;
 282   bool NeedToFireBeforeUnload() override;
 283   void DispatchBeforeUnload(bool for_cross_site_transition) override;
 284   void AttachToOuterWebContentsFrame(
 285       WebContents* outer_web_contents,
 286       RenderFrameHost* outer_contents_frame) override;
 287   void Stop() override;
 288   WebContents* Clone() override;
 289   void ReloadFocusedFrame(bool ignore_cache) override;
 290   void Undo() override;
 291   void Redo() override;
 292   void Cut() override;
 293   void Copy() override;
 294   void CopyToFindPboard() override;
 295   void Paste() override;
 296   void PasteAndMatchStyle() override;
 297   void Delete() override;
 298   void SelectAll() override;
 299   void Unselect() override;
 300   void Replace(const base::string16& word) override;
 301   void ReplaceMisspelling(const base::string16& word) override;
 302   void NotifyContextMenuClosed(
 303       const CustomContextMenuContext& context) override;
 304   void ExecuteCustomContextMenuCommand(
 305       int action,
 306       const CustomContextMenuContext& context) override;
 307   gfx::NativeView GetNativeView() override;
 308   gfx::NativeView GetContentNativeView() override;
 309   gfx::NativeWindow GetTopLevelNativeWindow() override;
 310   gfx::Rect GetContainerBounds() override;
 311   gfx::Rect GetViewBounds() override;
 312   DropData* GetDropData() override;
 313   void Focus() override;
 314   void SetInitialFocus() override;
 315   void StoreFocus() override;
 316   void RestoreFocus() override;
 317   void FocusThroughTabTraversal(bool reverse) override;
 318   bool ShowingInterstitialPage() const override;
 319   InterstitialPage* GetInterstitialPage() const override;
 320   bool IsSavable() override;
 321   void OnSavePage() override;
 322   bool SavePage(const base::FilePath& main_file,
 323                 const base::FilePath& dir_path,
 324                 SavePageType save_type) override;
 325   void SaveFrame(const GURL& url, const Referrer& referrer) override;
 326   void SaveFrameWithHeaders(const GURL& url,
 327                             const Referrer& referrer,
 328                             const std::string& headers) override;
 329   void GenerateMHTML(const base::FilePath& file,
 330                      const base::Callback<void(int64)>& callback) override;
 331   const std::string& GetContentsMimeType() const override;
 332   bool WillNotifyDisconnection() const override;
 333   void SetOverrideEncoding(const std::string& encoding) override;
 334   void ResetOverrideEncoding() override;
 335   RendererPreferences* GetMutableRendererPrefs() override;
 336   void Close() override;
 337   void SystemDragEnded() override;
 338   void UserGestureDone() override;
 339   void SetClosedByUserGesture(bool value) override;
 340   bool GetClosedByUserGesture() const override;
 341   void ViewSource() override;
 342   void ViewFrameSource(const GURL& url, const PageState& page_state) override;
 343   int GetMinimumZoomPercent() const override;
 344   int GetMaximumZoomPercent() const override;
 345   void ResetPageScale() override;
 346   gfx::Size GetPreferredSize() const override;
 347   bool GotResponseToLockMouseRequest(bool allowed) override;
 348   bool HasOpener() const override;
 349   WebContentsImpl* GetOpener() const override;
 350   void DidChooseColorInColorChooser(SkColor color) override;
 351   void DidEndColorChooser() override;
 352   int DownloadImage(const GURL& url,
 353                     bool is_favicon,
 354                     uint32_t max_bitmap_size,
 355                     bool bypass_cache,
 356                     const ImageDownloadCallback& callback) override;
 357   bool IsSubframe() const override;
 358   void Find(int request_id,
 359             const base::string16& search_text,
 360             const blink::WebFindOptions& options) override;
 361   void StopFinding(StopFindAction action) override;
 362   void InsertCSS(const std::string& css) override;
 363   bool WasRecentlyAudible() override;
 364   void GetManifest(const GetManifestCallback&) override;
 365   void ExitFullscreen() override;
 366   void ResumeLoadingCreatedWebContents() override;
 367 #if defined(OS_ANDROID)
 368   void OnMediaSessionStateChanged();
 369   void ResumeMediaSession() override;
 370   void SuspendMediaSession() override;
 371   void StopMediaSession() override;
 372
 373   base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() override;
 374   virtual WebContentsAndroid* GetWebContentsAndroid();
 375 #elif defined(OS_MACOSX)
 376   void SetAllowOtherViews(bool allow) override;
 377   bool GetAllowOtherViews() override;
 378 #endif
 379
 380   // Implementation of PageNavigator.
 381   WebContents* OpenURL(const OpenURLParams& params) override;
 382
 383   // Implementation of IPC::Sender.
 384   bool Send(IPC::Message* message) override;
 385
 386   // RenderFrameHostDelegate ---------------------------------------------------
 387   bool OnMessageReceived(RenderFrameHost* render_frame_host,
 388                          const IPC::Message& message) override;
 389   const GURL& GetMainFrameLastCommittedURL() const override;
 390   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
 391   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
 392   void SwappedOut(RenderFrameHost* render_frame_host) override;
 393   void ShowContextMenu(RenderFrameHost* render_frame_host,
 394                        const ContextMenuParams& params) override;
 395   void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
 396                             const base::string16& message,
 397                             const base::string16& default_prompt,
 398                             const GURL& frame_url,
 399                             JavaScriptMessageType type,
 400                             IPC::Message* reply_msg) override;
 401   void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
 402                               const base::string16& message,
 403                               bool is_reload,
 404                               IPC::Message* reply_msg) override;
 405   void DidAccessInitialDocument() override;
 406   void DidChangeName(RenderFrameHost* render_frame_host,
 407                      const std::string& name) override;
 408   void DocumentOnLoadCompleted(RenderFrameHost* render_frame_host) override;
 409   void UpdateTitle(RenderFrameHost* render_frame_host,
 410                    int32 page_id,
 411                    const base::string16& title,
 412                    base::i18n::TextDirection title_direction) override;
 413   void UpdateEncoding(RenderFrameHost* render_frame_host,
 414                       const std::string& encoding) override;
 415   WebContents* GetAsWebContents() override;
 416   bool IsNeverVisible() override;
 417   AccessibilityMode GetAccessibilityMode() const override;
 418   void AccessibilityEventReceived(
 419       const std::vector<AXEventNotificationDetails>& details) override;
 420   RenderFrameHost* GetGuestByInstanceID(
 421       RenderFrameHost* render_frame_host,
 422       int browser_plugin_instance_id) override;
 423   GeolocationServiceContext* GetGeolocationServiceContext() override;
 424   void EnterFullscreenMode(const GURL& origin) override;
 425   void ExitFullscreenMode() override;
 426   bool ShouldRouteMessageEvent(
 427       RenderFrameHost* target_rfh,
 428       SiteInstance* source_site_instance) const override;
 429   void EnsureOpenerProxiesExist(RenderFrameHost* source_rfh) override;
 430 #if defined(OS_WIN)
 431   gfx::NativeViewAccessible GetParentNativeViewAccessible() override;
 432 #endif
 433
 434   // RenderViewHostDelegate ----------------------------------------------------
 435   RenderViewHostDelegateView* GetDelegateView() override;
 436   bool OnMessageReceived(RenderViewHost* render_view_host,
 437                          const IPC::Message& message) override;
 438   // RenderFrameHostDelegate has the same method, so list it there because this
 439   // interface is going away.
 440   // WebContents* GetAsWebContents() override;
 441   gfx::Rect GetRootWindowResizerRect() const override;
 442   void RenderViewCreated(RenderViewHost* render_view_host) override;
 443   void RenderViewReady(RenderViewHost* render_view_host) override;
 444   void RenderViewTerminated(RenderViewHost* render_view_host,
 445                             base::TerminationStatus status,
 446                             int error_code) override;
 447   void RenderViewDeleted(RenderViewHost* render_view_host) override;
 448   void UpdateState(RenderViewHost* render_view_host,
 449                    int32 page_id,
 450                    const PageState& page_state) override;
 451   void UpdateTargetURL(RenderViewHost* render_view_host,
 452                        const GURL& url) override;
 453   void Close(RenderViewHost* render_view_host) override;
 454   void RequestMove(const gfx::Rect& new_bounds) override;
 455   void DidCancelLoading() override;
 456   void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) override;
 457   void RouteCloseEvent(RenderViewHost* rvh) override;
 458   bool AddMessageToConsole(int32 level,
 459                            const base::string16& message,
 460                            int32 line_no,
 461                            const base::string16& source_id) override;
 462   RendererPreferences GetRendererPrefs(
 463       BrowserContext* browser_context) const override;
 464   void OnUserGesture() override;
 465   void OnIgnoredUIEvent() override;
 466   void RendererUnresponsive(RenderViewHost* render_view_host) override;
 467   void RendererResponsive(RenderViewHost* render_view_host) override;
 468   void LoadStateChanged(const GURL& url,
 469                         const net::LoadStateWithParam& load_state,
 470                         uint64 upload_position,
 471                         uint64 upload_size) override;
 472   void Activate() override;
 473   void Deactivate() override;
 474   void LostCapture() override;
 475   void RunFileChooser(RenderViewHost* render_view_host,
 476                       const FileChooserParams& params) override;
 477   bool IsFullscreenForCurrentTab() const override;
 478   blink::WebDisplayMode GetDisplayMode() const override;
 479   void UpdatePreferredSize(const gfx::Size& pref_size) override;
 480   void ResizeDueToAutoResize(const gfx::Size& new_size) override;
 481   void RequestToLockMouse(bool user_gesture,
 482                           bool last_unlocked_by_target) override;
 483   void LostMouseLock() override;
 484   void CreateNewWindow(
 485       SiteInstance* source_site_instance,
 486       int route_id,
 487       int main_frame_route_id,
 488       const ViewHostMsg_CreateWindow_Params& params,
 489       SessionStorageNamespace* session_storage_namespace) override;
 490   void CreateNewWidget(int32 render_process_id,
 491                        int32 route_id,
 492                        int32 surface_id,
 493                        blink::WebPopupType popup_type) override;
 494   void CreateNewFullscreenWidget(int32 render_process_id,
 495                                  int32 route_id,
 496                                  int32 surface_id) override;
 497   void ShowCreatedWindow(int route_id,
 498                          WindowOpenDisposition disposition,
 499                          const gfx::Rect& initial_rect,
 500                          bool user_gesture) override;
 501   void ShowCreatedWidget(int route_id, const gfx::Rect& initial_rect) override;
 502   void ShowCreatedFullscreenWidget(int route_id) override;
 503   void RequestMediaAccessPermission(
 504       const MediaStreamRequest& request,
 505       const MediaResponseCallback& callback) override;
 506   bool CheckMediaAccessPermission(const GURL& security_origin,
 507                                   MediaStreamType type) override;
 508   SessionStorageNamespace* GetSessionStorageNamespace(
 509       SiteInstance* instance) override;
 510   SessionStorageNamespaceMap GetSessionStorageNamespaceMap() override;
 511   FrameTree* GetFrameTree() override;
 512   void SetIsVirtualKeyboardRequested(bool requested) override;
 513   bool IsVirtualKeyboardRequested() override;
 514
 515   // NavigatorDelegate ---------------------------------------------------------
 516
 517   void DidStartNavigation(NavigationHandle* navigation_handle) override;
 518   void DidRedirectNavigation(NavigationHandle* navigation_handle) override;
 519   void ReadyToCommitNavigation(NavigationHandle* navigation_handle) override;
 520   void DidCommitNavigation(NavigationHandle* navigation_handle) override;
 521   void DidFinishNavigation(NavigationHandle* navigation_handle) override;
 522   void DidStartProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 523                                const GURL& validated_url,
 524                                bool is_error_page,
 525                                bool is_iframe_srcdoc) override;
 526   void DidFailProvisionalLoadWithError(
 527       RenderFrameHostImpl* render_frame_host,
 528       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
 529       override;
 530   void DidFailLoadWithError(RenderFrameHostImpl* render_frame_host,
 531                             const GURL& url,
 532                             int error_code,
 533                             const base::string16& error_description,
 534                             bool was_ignored_by_handler) override;
 535   void DidCommitProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 536                                 const GURL& url,
 537                                 ui::PageTransition transition_type) override;
 538   void DidNavigateMainFramePreCommit(bool navigation_is_within_page) override;
 539   void DidNavigateMainFramePostCommit(
 540       RenderFrameHostImpl* render_frame_host,
 541       const LoadCommittedDetails& details,
 542       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 543   void DidNavigateAnyFramePostCommit(
 544       RenderFrameHostImpl* render_frame_host,
 545       const LoadCommittedDetails& details,
 546       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 547   void SetMainFrameMimeType(const std::string& mime_type) override;
 548   bool CanOverscrollContent() const override;
 549   void NotifyChangedNavigationState(InvalidateTypes changed_flags) override;
 550   void AboutToNavigateRenderFrame(
 551       RenderFrameHostImpl* old_host,
 552       RenderFrameHostImpl* new_host) override;
 553   void DidStartNavigationToPendingEntry(
 554       const GURL& url,
 555       NavigationController::ReloadType reload_type) override;
 556   void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
 557                       const OpenURLParams& params) override;
 558   bool ShouldPreserveAbortedURLs() override;
 559   void DidStartLoading(FrameTreeNode* frame_tree_node,
 560                        bool to_different_document) override;
 561   void DidStopLoading() override;
 562   void DidChangeLoadProgress() override;
 563
 564   // RenderWidgetHostDelegate --------------------------------------------------
 565
 566   void RenderWidgetDeleted(RenderWidgetHostImpl* render_widget_host) override;
 567   void RenderWidgetGotFocus(RenderWidgetHostImpl* render_widget_host) override;
 568   void RenderWidgetWasResized(RenderWidgetHostImpl* render_widget_host,
 569                               bool width_changed) override;
 570   void ScreenInfoChanged() override;
 571   bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
 572                               bool* is_keyboard_shortcut) override;
 573   void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) override;
 574   bool HandleWheelEvent(const blink::WebMouseWheelEvent& event) override;
 575   bool PreHandleGestureEvent(const blink::WebGestureEvent& event) override;
 576   void DidSendScreenRects(RenderWidgetHostImpl* rwh) override;
 577   BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() override;
 578   BrowserAccessibilityManager* GetOrCreateRootBrowserAccessibilityManager()
 579       override;
 580   // The following 4 functions are already listed under WebContents overrides:
 581   // void Cut() override;
 582   // void Copy() override;
 583   // void Paste() override;
 584   // void SelectAll() override;
 585   void MoveRangeSelectionExtent(const gfx::Point& extent) override;
 586   void SelectRange(const gfx::Point& base, const gfx::Point& extent) override;
 587   void AdjustSelectionByCharacterOffset(int start_adjust, int end_adjust)
 588       override;
 589   RenderWidgetHostInputEventRouter* GetInputEventRouter() override;
 590
 591   // RenderFrameHostManager::Delegate ------------------------------------------
 592
 593   bool CreateRenderViewForRenderManager(
 594       RenderViewHost* render_view_host,
 595       int opener_frame_routing_id,
 596       int proxy_routing_id,
 597       const FrameReplicationState& replicated_frame_state) override;
 598   void CreateRenderWidgetHostViewForRenderManager(
 599       RenderViewHost* render_view_host) override;
 600   bool CreateRenderFrameForRenderManager(
 601       RenderFrameHost* render_frame_host,
 602       int proxy_routing_id,
 603       int opener_routing_id,
 604       int parent_routing_id,
 605       int previous_sibling_routing_id) override;
 606   void BeforeUnloadFiredFromRenderManager(
 607       bool proceed,
 608       const base::TimeTicks& proceed_time,
 609       bool* proceed_to_fire_unload) override;
 610   void RenderProcessGoneFromRenderManager(
 611       RenderViewHost* render_view_host) override;
 612   void UpdateRenderViewSizeForRenderManager() override;
 613   void CancelModalDialogsForRenderManager() override;
 614   void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
 615                                       RenderFrameHost* new_host,
 616                                       bool is_main_frame) override;
 617   void NotifyMainFrameSwappedFromRenderManager(
 618       RenderViewHost* old_host,
 619       RenderViewHost* new_host) override;
 620   NavigationControllerImpl& GetControllerForRenderManager() override;
 621   scoped_ptr<WebUIImpl> CreateWebUIForRenderManager(const GURL& url) override;
 622   NavigationEntry* GetLastCommittedNavigationEntryForRenderManager() override;
 623   bool FocusLocationBarByDefault() override;
 624   void SetFocusToLocationBar(bool select_all) override;
 625   bool IsHidden() override;
 626   int GetOuterDelegateFrameTreeNodeID() override;
 627
 628   // NotificationObserver ------------------------------------------------------
 629
 630   void Observe(int type,
 631                const NotificationSource& source,
 632                const NotificationDetails& details) override;
 633
 634   // NavigationControllerDelegate ----------------------------------------------
 635
 636   WebContents* GetWebContents() override;
 637   void NotifyNavigationEntryCommitted(
 638       const LoadCommittedDetails& load_details) override;
 639
 640   // Invoked before a form repost warning is shown.
 641   void NotifyBeforeFormRepostWarningShow() override;
 642
 643   // Activate this WebContents and show a form repost warning.
 644   void ActivateAndShowRepostFormWarningDialog() override;
 645
 646   // Whether the initial empty page of this view has been accessed by another
 647   // page, making it unsafe to show the pending URL. Always false after the
 648   // first commit.
 649   bool HasAccessedInitialDocument() override;
 650
 651   // Updates the max page ID for the current SiteInstance in this
 652   // WebContentsImpl to be at least |page_id|.
 653   void UpdateMaxPageID(int32 page_id) override;
 654
 655   // Updates the max page ID for the given SiteInstance in this WebContentsImpl
 656   // to be at least |page_id|.
 657   void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
 658                                       int32 page_id) override;
 659
 660   // Copy the current map of SiteInstance ID to max page ID from another tab.
 661   // This is necessary when this tab adopts the NavigationEntries from
 662   // |web_contents|.
 663   void CopyMaxPageIDsFrom(WebContents* web_contents) override;
 664
 665   // Sets the history for this WebContentsImpl to |history_length| entries, with
 666   // an offset of |history_offset|.
 667   void SetHistoryOffsetAndLength(int history_offset,
 668                                  int history_length) override;
 669
 670   // Called by InterstitialPageImpl when it creates a RenderFrameHost.
 671   void RenderFrameForInterstitialPageCreated(
 672       RenderFrameHost* render_frame_host) override;
 673
 674   // Sets the passed interstitial as the currently showing interstitial.
 675   // No interstitial page should already be attached.
 676   void AttachInterstitialPage(InterstitialPageImpl* interstitial_page) override;
 677
 678   // Unsets the currently showing interstitial.
 679   void DetachInterstitialPage() override;
 680
 681   // Changes the IsLoading state and notifies the delegate as needed.
 682   // |details| is used to provide details on the load that just finished
 683   // (but can be null if not applicable).
 684   void SetIsLoading(bool is_loading,
 685                     bool to_different_document,
 686                     LoadNotificationDetails* details) override;
 687
 688   typedef base::Callback<void(WebContents*)> CreatedCallback;
 689
 690   // Forces overscroll to be disabled (used by touch emulation).
 691   void SetForceDisableOverscrollContent(bool force_disable);
 692
 693   AudioStreamMonitor* audio_stream_monitor() {
 694     return &audio_stream_monitor_;
 695   }
 696
 697   bool has_audio_power_save_blocker_for_testing() const {
 698     return audio_power_save_blocker_;
 699   }
 700
 701   bool has_video_power_save_blocker_for_testing() const {
 702     return video_power_save_blocker_;
 703   }
 704
 705 #if defined(ENABLE_BROWSER_CDMS)
 706   MediaWebContentsObserver* media_web_contents_observer() {
 707     return media_web_contents_observer_.get();
 708   }
 709 #endif
 710
 711  private:
 712   friend class WebContentsObserver;
 713   friend class WebContents;  // To implement factory methods.
 714
 715   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
 716   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
 717   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
 718   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 719                            CrossSiteCantPreemptAfterUnload);
 720   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
 721   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
 722   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
 723   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 724                            LoadResourceFromMemoryCacheWithBadSecurityInfo);
 725   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 726                            LoadResourceFromMemoryCacheWithEmptySecurityInfo);
 727   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
 728   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
 729   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
 730   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
 731   FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest,
 732                            CrossSiteIframeAccessibility);
 733
 734   // So InterstitialPageImpl can access SetIsLoading.
 735   friend class InterstitialPageImpl;
 736
 737   // TODO(brettw) TestWebContents shouldn't exist!
 738   friend class TestWebContents;
 739
 740   class DestructionObserver;
 741
 742   // Represents a WebContents node in a tree of WebContents structure.
 743   //
 744   // Two WebContents with separate FrameTrees can be connected by
 745   // outer/inner relationship using this class. Note that their FrameTrees
 746   // still remain disjoint.
 747   // The parent is referred to as "outer WebContents" and the descendents are
 748   // referred to as "inner WebContents".
 749   // For each inner WebContents, the outer WebContents will have a
 750   // corresponding FrameTreeNode.
 751   struct WebContentsTreeNode {
 752    public:
 753     WebContentsTreeNode();
 754     ~WebContentsTreeNode();
 755
 756     typedef std::set<WebContentsTreeNode*> ChildrenSet;
 757
 758     void ConnectToOuterWebContents(WebContentsImpl* outer_web_contents,
 759                                    RenderFrameHostImpl* outer_contents_frame);
 760
 761     WebContentsImpl* outer_web_contents() { return outer_web_contents_; }
 762     int outer_contents_frame_tree_node_id() {
 763       return outer_contents_frame_tree_node_id_;
 764     }
 765
 766    private:
 767     // The outer Webontents.
 768     WebContentsImpl* outer_web_contents_;
 769     // The ID of the FrameTreeNode in outer WebContents that is hosting us.
 770     int outer_contents_frame_tree_node_id_;
 771     // List of inner WebContents that we host.
 772     ChildrenSet inner_web_contents_tree_nodes_;
 773   };
 774
 775   // See WebContents::Create for a description of these parameters.
 776   WebContentsImpl(BrowserContext* browser_context);
 777
 778   // Add and remove observers for page navigation notifications. The order in
 779   // which notifications are sent to observers is undefined. Clients must be
 780   // sure to remove the observer before they go away.
 781   void AddObserver(WebContentsObserver* observer);
 782   void RemoveObserver(WebContentsObserver* observer);
 783
 784   // Clears a pending contents that has been closed before being shown.
 785   void OnWebContentsDestroyed(WebContentsImpl* web_contents);
 786
 787   // Creates and adds to the map a destruction observer watching |web_contents|.
 788   // No-op if such an observer already exists.
 789   void AddDestructionObserver(WebContentsImpl* web_contents);
 790
 791   // Deletes and removes from the map a destruction observer
 792   // watching |web_contents|. No-op if there is no such observer.
 793   void RemoveDestructionObserver(WebContentsImpl* web_contents);
 794
 795   // Traverses all the RenderFrameHosts in the FrameTree and creates a set
 796   // all the unique RenderWidgetHostViews.
 797   std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
 798
 799   // Callback function when showing JavaScript dialogs.  Takes in a routing ID
 800   // pair to identify the RenderFrameHost that opened the dialog, because it's
 801   // possible for the RenderFrameHost to be deleted by the time this is called.
 802   void OnDialogClosed(int render_process_id,
 803                       int render_frame_id,
 804                       IPC::Message* reply_msg,
 805                       bool dialog_was_suppressed,
 806                       bool success,
 807                       const base::string16& user_input);
 808
 809   bool OnMessageReceived(RenderViewHost* render_view_host,
 810                          RenderFrameHost* render_frame_host,
 811                          const IPC::Message& message);
 812
 813   // Checks whether render_frame_message_source_ is set to non-null value,
 814   // otherwise it terminates the main frame renderer process.
 815   bool HasValidFrameSource();
 816
 817   // IPC message handlers.
 818   void OnThemeColorChanged(SkColor theme_color);
 819   void OnDidLoadResourceFromMemoryCache(const GURL& url,
 820                                         const std::string& security_info,
 821                                         const std::string& http_request,
 822                                         const std::string& mime_type,
 823                                         ResourceType resource_type);
 824   void OnDidDisplayInsecureContent();
 825   void OnDidRunInsecureContent(const std::string& security_origin,
 826                                const GURL& target_url);
 827   void OnDocumentLoadedInFrame();
 828   void OnDidFinishLoad(const GURL& url);
 829   void OnGoToEntryAtOffset(int offset);
 830   void OnUpdateZoomLimits(int minimum_percent,
 831                           int maximum_percent);
 832   void OnEnumerateDirectory(int request_id, const base::FilePath& path);
 833
 834   void OnRegisterProtocolHandler(const std::string& protocol,
 835                                  const GURL& url,
 836                                  const base::string16& title,
 837                                  bool user_gesture);
 838   void OnUnregisterProtocolHandler(const std::string& protocol,
 839                                    const GURL& url,
 840                                    bool user_gesture);
 841   void OnFindReply(int request_id,
 842                    int number_of_matches,
 843                    const gfx::Rect& selection_rect,
 844                    int active_match_ordinal,
 845                    bool final_update);
 846 #if defined(OS_ANDROID)
 847   void OnFindMatchRectsReply(int version,
 848                              const std::vector<gfx::RectF>& rects,
 849                              const gfx::RectF& active_rect);
 850
 851   void OnOpenDateTimeDialog(
 852       const ViewHostMsg_DateTimeDialogValue_Params& value);
 853 #endif
 854   void OnDomOperationResponse(const std::string& json_string,
 855                               int automation_id);
 856   void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
 857   void OnOpenColorChooser(int color_chooser_id,
 858                           SkColor color,
 859                           const std::vector<ColorSuggestion>& suggestions);
 860   void OnEndColorChooser(int color_chooser_id);
 861   void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
 862   void OnWebUISend(const GURL& source_url,
 863                    const std::string& name,
 864                    const base::ListValue& args);
 865 #if defined(ENABLE_PLUGINS)
 866   void OnPepperInstanceCreated();
 867   void OnPepperInstanceDeleted();
 868   void OnPepperPluginHung(int plugin_child_id,
 869                           const base::FilePath& path,
 870                           bool is_hung);
 871   void OnPluginCrashed(const base::FilePath& plugin_path,
 872                        base::ProcessId plugin_pid);
 873   void OnRequestPpapiBrokerPermission(int routing_id,
 874                                       const GURL& url,
 875                                       const base::FilePath& plugin_path);
 876
 877   // Callback function when requesting permission to access the PPAPI broker.
 878   // |result| is true if permission was granted.
 879   void OnPpapiBrokerPermissionResult(int routing_id, bool result);
 880
 881   void OnBrowserPluginMessage(RenderFrameHost* render_frame_host,
 882                               const IPC::Message& message);
 883 #endif  // defined(ENABLE_PLUGINS)
 884   void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
 885   void OnFirstVisuallyNonEmptyPaint();
 886   void OnMediaPlayingNotification(int64 player_cookie,
 887                                   bool has_video,
 888                                   bool has_audio,
 889                                   bool is_remote);
 890   void OnMediaPausedNotification(int64 player_cookie);
 891   void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
 892                                const base::string16& main_text,
 893                                const base::string16& sub_text);
 894   void OnHideValidationMessage();
 895   void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
 896
 897   // Called by derived classes to indicate that we're no longer waiting for a
 898   // response. This won't actually update the throbber, but it will get picked
 899   // up at the next animation step if the throbber is going.
 900   void SetNotWaitingForResponse() { waiting_for_response_ = false; }
 901
 902   // Navigation helpers --------------------------------------------------------
 903   //
 904   // These functions are helpers for Navigate() and DidNavigate().
 905
 906   // Handles post-navigation tasks in DidNavigate AFTER the entry has been
 907   // committed to the navigation controller. Note that the navigation entry is
 908   // not provided since it may be invalid/changed after being committed. The
 909   // current navigation entry is in the NavigationController at this point.
 910
 911   // If our controller was restored, update the max page ID associated with the
 912   // given RenderViewHost to be larger than the number of restored entries.
 913   // This is called in CreateRenderView before any navigations in the RenderView
 914   // have begun, to prevent any races in updating RenderView::next_page_id.
 915   void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
 916
 917   // Saves the given title to the navigation entry and does associated work. It
 918   // will update history and the view for the new title, and also synthesize
 919   // titles for file URLs that have none (so we require that the URL of the
 920   // entry already be set).
 921   //
 922   // This is used as the backend for state updates, which include a new title,
 923   // or the dedicated set title message. It returns true if the new title is
 924   // different and was therefore updated.
 925   bool UpdateTitleForEntry(NavigationEntryImpl* entry,
 926                            const base::string16& title);
 927
 928   // Helper for CreateNewWidget/CreateNewFullscreenWidget.
 929   void CreateNewWidget(int32 render_process_id,
 930                        int32 route_id,
 931                        int32 surface_id,
 932                        bool is_fullscreen,
 933                        blink::WebPopupType popup_type);
 934
 935   // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
 936   void ShowCreatedWidget(int route_id,
 937                          bool is_fullscreen,
 938                          const gfx::Rect& initial_rect);
 939
 940   // Finds the new RenderWidgetHost and returns it. Note that this can only be
 941   // called once as this call also removes it from the internal map.
 942   RenderWidgetHostView* GetCreatedWidget(int route_id);
 943
 944   // Finds the new WebContentsImpl by route_id, initializes it for
 945   // renderer-initiated creation, and returns it. Note that this can only be
 946   // called once as this call also removes it from the internal map.
 947   WebContentsImpl* GetCreatedWindow(int route_id);
 948
 949   // Tracking loading progress -------------------------------------------------
 950
 951   // Resets the tracking state of the current load progress.
 952   void ResetLoadProgressState();
 953
 954   // Notifies the delegate that the load progress was updated.
 955   void SendChangeLoadProgress();
 956
 957   // Misc non-view stuff -------------------------------------------------------
 958
 959   // Sets the history for a specified RenderViewHost to |history_length|
 960   // entries, with an offset of |history_offset|.
 961   void SetHistoryOffsetAndLengthForView(RenderViewHost* render_view_host,
 962                                         int history_offset,
 963                                         int history_length);
 964
 965   // Helper functions for sending notifications.
 966   void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
 967   void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
 968   void NotifyDisconnected();
 969
 970   void SetEncoding(const std::string& encoding);
 971
 972   // TODO(creis): This should take in a FrameTreeNode to know which node's
 973   // render manager to return.  For now, we just return the root's.
 974   RenderFrameHostManager* GetRenderManager() const;
 975
 976   // Removes browser plugin embedder if there is one.
 977   void RemoveBrowserPluginEmbedder();
 978
 979   // Clear |render_frame_host|'s tracking entry for its power save blockers.
 980   void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
 981
 982   // Clear tracking entries for all RenderFrameHosts, clears
 983   // |audio_power_save_blocker_| and |video_power_save_blocker_|.
 984   void ClearAllPowerSaveBlockers();
 985
 986   // Creates an audio or video power save blocker respectively.
 987   void CreateAudioPowerSaveBlocker();
 988   void CreateVideoPowerSaveBlocker();
 989
 990   // Releases the audio power save blockers if |active_audio_players_| is empty.
 991   // Likewise, releases the video power save blockers if |active_video_players_|
 992   // is empty.
 993   void MaybeReleasePowerSaveBlockers();
 994
 995   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
 996   gfx::Size GetSizeForNewRenderView();
 997
 998   void OnFrameRemoved(RenderFrameHost* render_frame_host);
 999
1000   // Helper method that's called whenever |preferred_size_| or
1001   // |preferred_size_for_capture_| changes, to propagate the new value to the
1002   // |delegate_|.
1003   void OnPreferredSizeChanged(const gfx::Size& old_size);
1004
1005   // Helper methods for adding or removing player entries in |player_map| under
1006   // the key |render_frame_message_source_|.
1007   typedef std::vector<int64> PlayerList;
1008   typedef std::map<uintptr_t, PlayerList> ActiveMediaPlayerMap;
1009   void AddMediaPlayerEntry(int64 player_cookie,
1010                            ActiveMediaPlayerMap* player_map);
1011   void RemoveMediaPlayerEntry(int64 player_cookie,
1012                               ActiveMediaPlayerMap* player_map);
1013   // Removes all entries from |player_map| for |render_frame_host|.
1014   void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host,
1015                                    ActiveMediaPlayerMap* player_map);
1016
1017   // Internal helper to create WebUI objects associated with |this|. |url| is
1018   // used to determine which WebUI should be created (if any). |frame_name|
1019   // corresponds to the name of a frame that the WebUI should be created for (or
1020   // the main frame if empty).
1021   WebUI* CreateWebUI(const GURL& url, const std::string& frame_name);
1022
1023   // Data for core operation ---------------------------------------------------
1024
1025   // Delegate for notifying our owner about stuff. Not owned by us.
1026   WebContentsDelegate* delegate_;
1027
1028   // Handles the back/forward list and loading.
1029   NavigationControllerImpl controller_;
1030
1031   // The corresponding view.
1032   scoped_ptr<WebContentsView> view_;
1033
1034   // The view of the RVHD. Usually this is our WebContentsView implementation,
1035   // but if an embedder uses a different WebContentsView, they'll need to
1036   // provide this.
1037   RenderViewHostDelegateView* render_view_host_delegate_view_;
1038
1039   // Tracks created WebContentsImpl objects that have not been shown yet. They
1040   // are identified by the route ID passed to CreateNewWindow.
1041   typedef std::map<int, WebContentsImpl*> PendingContents;
1042   PendingContents pending_contents_;
1043
1044   // These maps hold on to the widgets that we created on behalf of the renderer
1045   // that haven't shown yet.
1046   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
1047   PendingWidgetViews pending_widget_views_;
1048
1049   typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
1050   DestructionObservers destruction_observers_;
1051
1052   // A list of observers notified when page state changes. Weak references.
1053   // This MUST be listed above frame_tree_ since at destruction time the
1054   // latter might cause RenderViewHost's destructor to call us and we might use
1055   // the observer list then.
1056   base::ObserverList<WebContentsObserver> observers_;
1057
1058   // True if this tab was opened by another tab. This is not unset if the opener
1059   // is closed.
1060   bool created_with_opener_;
1061
1062 #if defined(OS_WIN)
1063   gfx::NativeViewAccessible accessible_parent_;
1064 #endif
1065
1066   // Helper classes ------------------------------------------------------------
1067
1068   // Tracking variables and associated power save blockers for media playback.
1069   ActiveMediaPlayerMap active_audio_players_;
1070   ActiveMediaPlayerMap active_video_players_;
1071   scoped_ptr<PowerSaveBlocker> audio_power_save_blocker_;
1072   scoped_ptr<PowerSaveBlocker> video_power_save_blocker_;
1073
1074   // Manages the frame tree of the page and process swaps in each node.
1075   FrameTree frame_tree_;
1076
1077   // If this WebContents is part of a "tree of WebContents", then this contains
1078   // information about the structure.
1079   scoped_ptr<WebContentsTreeNode> node_;
1080
1081   // SavePackage, lazily created.
1082   scoped_refptr<SavePackage> save_package_;
1083
1084   // Data for loading state ----------------------------------------------------
1085
1086   // Indicates whether we're currently loading a resource.
1087   bool is_loading_;
1088
1089   // Indicates whether the current load is to a different document. Only valid
1090   // if is_loading_ is true.
1091   bool is_load_to_different_document_;
1092
1093   // Indicates if the tab is considered crashed.
1094   base::TerminationStatus crashed_status_;
1095   int crashed_error_code_;
1096
1097   // Whether this WebContents is waiting for a first-response for the
1098   // main resource of the page. This controls whether the throbber state is
1099   // "waiting" or "loading."
1100   bool waiting_for_response_;
1101
1102   // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1103   // to a given tab and SiteInstance, and must be valid for the lifetime of the
1104   // WebContentsImpl.
1105   std::map<int32, int32> max_page_ids_;
1106
1107   // The current load state and the URL associated with it.
1108   net::LoadStateWithParam load_state_;
1109   base::string16 load_state_host_;
1110
1111   base::TimeTicks loading_last_progress_update_;
1112
1113   // Upload progress, for displaying in the status bar.
1114   // Set to zero when there is no significant upload happening.
1115   uint64 upload_size_;
1116   uint64 upload_position_;
1117
1118   // Tracks that this WebContents needs to unblock requests to the renderer.
1119   // See ResumeLoadingCreatedWebContents.
1120   bool is_resume_pending_;
1121
1122   // Data for current page -----------------------------------------------------
1123
1124   // When a title cannot be taken from any entry, this title will be used.
1125   base::string16 page_title_when_no_navigation_entry_;
1126
1127   // When a navigation occurs, we record its contents MIME type. It can be
1128   // used to check whether we can do something for some special contents.
1129   std::string contents_mime_type_;
1130
1131   // The last reported character encoding, not canonicalized.
1132   std::string last_reported_encoding_;
1133
1134   // The canonicalized character encoding.
1135   std::string canonical_encoding_;
1136
1137   // True if this is a secure page which displayed insecure content.
1138   bool displayed_insecure_content_;
1139
1140   // Whether the initial empty page has been accessed by another page, making it
1141   // unsafe to show the pending URL. Usually false unless another window tries
1142   // to modify the blank page.  Always false after the first commit.
1143   bool has_accessed_initial_document_;
1144
1145   // The theme color for the underlying document as specified
1146   // by theme-color meta tag.
1147   SkColor theme_color_;
1148
1149   // The last published theme color.
1150   SkColor last_sent_theme_color_;
1151
1152   // Whether the first visually non-empty paint has occurred.
1153   bool did_first_visually_non_empty_paint_;
1154
1155   // Data for misc internal state ----------------------------------------------
1156
1157   // When > 0, the WebContents is currently being captured (e.g., for
1158   // screenshots or mirroring); and the underlying RenderWidgetHost should not
1159   // be told it is hidden.
1160   int capturer_count_;
1161
1162   // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1163   bool should_normally_be_visible_;
1164
1165   // See getter above.
1166   bool is_being_destroyed_;
1167
1168   // Indicates whether we should notify about disconnection of this
1169   // WebContentsImpl. This is used to ensure disconnection notifications only
1170   // happen if a connection notification has happened and that they happen only
1171   // once.
1172   bool notify_disconnection_;
1173
1174   // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1175   // delegate of this WebContentsImpl is nulled before its destructor is called.
1176   JavaScriptDialogManager* dialog_manager_;
1177
1178   // Set to true when there is an active "before unload" dialog.  When true,
1179   // we've forced the throbber to start in Navigate, and we need to remember to
1180   // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1181   bool is_showing_before_unload_dialog_;
1182
1183   // Settings that get passed to the renderer process.
1184   RendererPreferences renderer_preferences_;
1185
1186   // The time that this WebContents was last made active. The initial value is
1187   // the WebContents creation time.
1188   base::TimeTicks last_active_time_;
1189
1190   // See description above setter.
1191   bool closed_by_user_gesture_;
1192
1193   // Minimum/maximum zoom percent.
1194   int minimum_zoom_percent_;
1195   int maximum_zoom_percent_;
1196
1197   // The intrinsic size of the page.
1198   gfx::Size preferred_size_;
1199
1200   // The preferred size for content screen capture.  When |capturer_count_| > 0,
1201   // this overrides |preferred_size_|.
1202   gfx::Size preferred_size_for_capture_;
1203
1204 #if defined(OS_ANDROID)
1205   // Date time chooser opened by this tab.
1206   // Only used in Android since all other platforms use a multi field UI.
1207   scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1208 #endif
1209
1210   // Holds information about a current color chooser dialog, if one is visible.
1211   struct ColorChooserInfo {
1212     ColorChooserInfo(int render_process_id,
1213                      int render_frame_id,
1214                      ColorChooser* chooser,
1215                      int identifier);
1216     ~ColorChooserInfo();
1217
1218     int render_process_id;
1219     int render_frame_id;
1220
1221     // Color chooser that was opened by this tab.
1222     scoped_ptr<ColorChooser> chooser;
1223
1224     // A unique identifier for the current color chooser.  Identifiers are
1225     // unique across a renderer process.  This avoids race conditions in
1226     // synchronizing the browser and renderer processes.  For example, if a
1227     // renderer closes one chooser and opens another, and simultaneously the
1228     // user picks a color in the first chooser, the IDs can be used to drop the
1229     // "chose a color" message rather than erroneously tell the renderer that
1230     // the user picked a color in the second chooser.
1231     int identifier;
1232   };
1233
1234   scoped_ptr<ColorChooserInfo> color_chooser_info_;
1235
1236   // Manages the embedder state for browser plugins, if this WebContents is an
1237   // embedder; NULL otherwise.
1238   scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1239   // Manages the guest state for browser plugin, if this WebContents is a guest;
1240   // NULL otherwise.
1241   scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1242
1243 #if defined(ENABLE_PLUGINS)
1244   // Manages the whitelist of plugin content origins exempt from power saving.
1245   scoped_ptr<PluginContentOriginWhitelist> plugin_content_origin_whitelist_;
1246 #endif
1247
1248   // This must be at the end, or else we might get notifications and use other
1249   // member variables that are gone.
1250   NotificationRegistrar registrar_;
1251
1252   // Used during IPC message dispatching from the RenderView/RenderFrame so that
1253   // the handlers can get a pointer to the RVH through which the message was
1254   // received.
1255   RenderViewHost* render_view_message_source_;
1256   RenderFrameHost* render_frame_message_source_;
1257
1258   // All live RenderWidgetHostImpls that are created by this object and may
1259   // outlive it.
1260   std::set<RenderWidgetHostImpl*> created_widgets_;
1261
1262   // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1263   int fullscreen_widget_routing_id_;
1264
1265   // At the time the fullscreen widget was being shut down, did it have focus?
1266   // This is used to restore focus to the WebContentsView after both: 1) the
1267   // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1268   // completed making layout changes to effect an exit from fullscreen mode.
1269   bool fullscreen_widget_had_focus_at_shutdown_;
1270
1271   // Whether this WebContents is responsible for displaying a subframe in a
1272   // different process from its parent page.
1273   bool is_subframe_;
1274
1275   // When a new tab is created asynchronously, stores the OpenURLParams needed
1276   // to continue loading the page once the tab is ready.
1277   scoped_ptr<OpenURLParams> delayed_open_url_params_;
1278
1279   // Whether overscroll should be unconditionally disabled.
1280   bool force_disable_overscroll_content_;
1281
1282   // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1283   bool last_dialog_suppressed_;
1284
1285   scoped_ptr<GeolocationServiceContext> geolocation_service_context_;
1286
1287   scoped_ptr<ScreenOrientationDispatcherHost>
1288       screen_orientation_dispatcher_host_;
1289
1290   scoped_ptr<ManifestManagerHost> manifest_manager_host_;
1291
1292   // The accessibility mode for all frames. This is queried when each frame
1293   // is created, and broadcast to all frames when it changes.
1294   AccessibilityMode accessibility_mode_;
1295
1296   // Monitors power levels for audio streams associated with this WebContents.
1297   AudioStreamMonitor audio_stream_monitor_;
1298
1299   // Created on-demand to mute all audio output from this WebContents.
1300   scoped_ptr<WebContentsAudioMuter> audio_muter_;
1301
1302   bool virtual_keyboard_requested_;
1303
1304 #if defined(ENABLE_BROWSER_CDMS)
1305   // Manages all the media player and CDM managers and forwards IPCs to them.
1306   scoped_ptr<MediaWebContentsObserver> media_web_contents_observer_;
1307 #endif
1308
1309   scoped_ptr<RenderWidgetHostInputEventRouter> rwh_input_event_router_;
1310
1311   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1312
1313   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1314 };
1315
1316 // Dangerous methods which should never be made part of the public API, so we
1317 // grant their use only to an explicit friend list (c++ attorney/client idiom).
1318 class CONTENT_EXPORT WebContentsImpl::FriendZone {
1319  private:
1320   friend class TestNavigationObserver;
1321   friend class WebContentsAddedObserver;
1322   friend class ContentBrowserSanityChecker;
1323
1324   FriendZone();  // Not instantiable.
1325
1326   // Adds/removes a callback called on creation of each new WebContents.
1327   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
1328   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
1329
1330   DISALLOW_COPY_AND_ASSIGN(FriendZone);
1331 };
1332
1333 }  // namespace content
1334
1335 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_