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/gtest_prod_util.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/observer_list.h"
  16 #include "base/process/process.h"
  17 #include "base/values.h"
  18 #include "content/browser/frame_host/frame_tree.h"
  19 #include "content/browser/frame_host/navigation_controller_delegate.h"
  20 #include "content/browser/frame_host/navigation_controller_impl.h"
  21 #include "content/browser/frame_host/navigator_delegate.h"
  22 #include "content/browser/frame_host/render_frame_host_delegate.h"
  23 #include "content/browser/frame_host/render_frame_host_manager.h"
  24 #include "content/browser/renderer_host/render_view_host_delegate.h"
  25 #include "content/browser/renderer_host/render_widget_host_delegate.h"
  26 #include "content/common/content_export.h"
  27 #include "content/public/browser/notification_observer.h"
  28 #include "content/public/browser/notification_registrar.h"
  29 #include "content/public/browser/web_contents.h"
  30 #include "content/public/common/page_transition_types.h"
  31 #include "content/public/common/renderer_preferences.h"
  32 #include "content/public/common/three_d_api_types.h"
  33 #include "net/base/load_states.h"
  34 #include "third_party/WebKit/public/web/WebDragOperation.h"
  35 #include "ui/gfx/rect_f.h"
  36 #include "ui/gfx/size.h"
  37 #include "webkit/common/resource_type.h"
  38
  39 struct BrowserPluginHostMsg_ResizeGuest_Params;
  40 struct ViewHostMsg_DateTimeDialogValue_Params;
  41 struct ViewMsg_PostMessage_Params;
  42
  43 namespace content {
  44 class BrowserPluginEmbedder;
  45 class BrowserPluginGuest;
  46 class BrowserPluginGuestManager;
  47 class ColorChooser;
  48 class DateTimeChooserAndroid;
  49 class DownloadItem;
  50 class InterstitialPageImpl;
  51 class JavaBridgeDispatcherHostManager;
  52 class JavaScriptDialogManager;
  53 class PowerSaveBlocker;
  54 class RenderViewHost;
  55 class RenderViewHostDelegateView;
  56 class RenderViewHostImpl;
  57 class RenderWidgetHostImpl;
  58 class RenderWidgetHostViewPort;
  59 class SavePackage;
  60 class SessionStorageNamespaceImpl;
  61 class SiteInstance;
  62 class TestWebContents;
  63 class WebContentsDelegate;
  64 class WebContentsImpl;
  65 class WebContentsObserver;
  66 class WebContentsViewPort;
  67 class WebContentsViewDelegate;
  68 struct ColorSuggestion;
  69 struct FaviconURL;
  70 struct LoadNotificationDetails;
  71 struct ResourceRedirectDetails;
  72 struct ResourceRequestDetails;
  73
  74 // Factory function for the implementations that content knows about. Takes
  75 // ownership of |delegate|.
  76 WebContentsViewPort* CreateWebContentsView(
  77     WebContentsImpl* web_contents,
  78     WebContentsViewDelegate* delegate,
  79     RenderViewHostDelegateView** render_view_host_delegate_view);
  80
  81 class CONTENT_EXPORT WebContentsImpl
  82     : public NON_EXPORTED_BASE(WebContents),
  83       public NON_EXPORTED_BASE(RenderFrameHostDelegate),
  84       public RenderViewHostDelegate,
  85       public RenderWidgetHostDelegate,
  86       public RenderFrameHostManager::Delegate,
  87       public NotificationObserver,
  88       public NON_EXPORTED_BASE(NavigationControllerDelegate),
  89       public NON_EXPORTED_BASE(NavigatorDelegate) {
  90  public:
  91   virtual ~WebContentsImpl();
  92
  93   static WebContentsImpl* CreateWithOpener(
  94       const WebContents::CreateParams& params,
  95       WebContentsImpl* opener);
  96
  97   // Returns the opener WebContentsImpl, if any. This can be set to null if the
  98   // opener is closed or the page clears its window.opener.
  99   WebContentsImpl* opener() const { return opener_; }
 100
 101   // Creates a WebContents to be used as a browser plugin guest.
 102   static BrowserPluginGuest* CreateGuest(
 103       BrowserContext* browser_context,
 104       content::SiteInstance* site_instance,
 105       int guest_instance_id,
 106       scoped_ptr<base::DictionaryValue> extra_params);
 107
 108   // Creates a swapped out RenderView. This is used by the browser plugin to
 109   // create a swapped out RenderView in the embedder render process for the
 110   // guest, to expose the guest's window object to the embedder.
 111   // This returns the routing ID of the newly created swapped out RenderView.
 112   int CreateSwappedOutRenderView(SiteInstance* instance);
 113
 114   // Complex initialization here. Specifically needed to avoid having
 115   // members call back into our virtual functions in the constructor.
 116   virtual void Init(const WebContents::CreateParams& params);
 117
 118   // Returns the SavePackage which manages the page saving job. May be NULL.
 119   SavePackage* save_package() const { return save_package_.get(); }
 120
 121 #if defined(OS_ANDROID)
 122   JavaBridgeDispatcherHostManager* java_bridge_dispatcher_host_manager() const {
 123     return java_bridge_dispatcher_host_manager_.get();
 124   }
 125
 126   // In Android WebView, the RenderView needs created even there is no
 127   // navigation entry, this allows Android WebViews to use
 128   // javascript: URLs that load into the DOMWindow before the first page
 129   // load. This is not safe to do in any context that a web page could get a
 130   // reference to the DOMWindow before the first page load.
 131   bool CreateRenderViewForInitialEmptyDocument();
 132 #endif
 133
 134   // Expose the render manager for testing.
 135   RenderFrameHostManager* GetRenderManagerForTesting();
 136
 137   // Returns guest browser plugin object, or NULL if this WebContents is not a
 138   // guest.
 139   BrowserPluginGuest* GetBrowserPluginGuest() const;
 140
 141   // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
 142   // has a BrowserPluginGuest then that implies that it is being hosted by
 143   // a BrowserPlugin object in an embedder renderer process.
 144   void SetBrowserPluginGuest(BrowserPluginGuest* guest);
 145
 146   // Returns embedder browser plugin object, or NULL if this WebContents is not
 147   // an embedder.
 148   BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
 149
 150   // Returns the BrowserPluginGuestManager object, or NULL if this web contents
 151   // does not have a BrowserPluginGuestManager.
 152   BrowserPluginGuestManager* GetBrowserPluginGuestManager() const;
 153
 154   // Gets the current fullscreen render widget's routing ID. Returns
 155   // MSG_ROUTING_NONE when there is no fullscreen render widget.
 156   int GetFullscreenWidgetRoutingID() const;
 157
 158   // Invoked when visible SSL state (as defined by SSLStatus) changes.
 159   void DidChangeVisibleSSLState();
 160
 161   // Informs the render view host and the BrowserPluginEmbedder, if present, of
 162   // a Drag Source End.
 163   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
 164       int screen_y, blink::WebDragOperation operation);
 165
 166   // Informs the render view host and the BrowserPluginEmbedder, if present, of
 167   // a Drag Source Move.
 168   void DragSourceMovedTo(int client_x, int client_y,
 169                          int screen_x, int screen_y);
 170
 171   // A response has been received for a resource request.
 172   void DidGetResourceResponseStart(
 173       const ResourceRequestDetails& details);
 174
 175   // A redirect was received while requesting a resource.
 176   void DidGetRedirectForResourceRequest(
 177       RenderViewHost* render_view_host,
 178       const ResourceRedirectDetails& details);
 179
 180   // WebContents ------------------------------------------------------
 181   virtual WebContentsDelegate* GetDelegate() OVERRIDE;
 182   virtual void SetDelegate(WebContentsDelegate* delegate) OVERRIDE;
 183   virtual NavigationControllerImpl& GetController() OVERRIDE;
 184   virtual const NavigationControllerImpl& GetController() const OVERRIDE;
 185   virtual BrowserContext* GetBrowserContext() const OVERRIDE;
 186   virtual RenderProcessHost* GetRenderProcessHost() const OVERRIDE;
 187   virtual RenderFrameHost* GetMainFrame() OVERRIDE;
 188   virtual void ForEachFrame(
 189       const base::Callback<void(RenderFrameHost*)>& on_frame) OVERRIDE;
 190   virtual void SendToAllFrames(IPC::Message* message) OVERRIDE;
 191   virtual RenderViewHost* GetRenderViewHost() const OVERRIDE;
 192   virtual void GetRenderViewHostAtPosition(
 193       int x,
 194       int y,
 195       const GetRenderViewHostCallback& callback) OVERRIDE;
 196   virtual WebContents* GetEmbedderWebContents() const OVERRIDE;
 197   virtual int GetEmbeddedInstanceID() const OVERRIDE;
 198   virtual int GetRoutingID() const OVERRIDE;
 199   virtual RenderWidgetHostView* GetRenderWidgetHostView() const OVERRIDE;
 200   virtual RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const
 201       OVERRIDE;
 202   virtual WebContentsView* GetView() const OVERRIDE;
 203   virtual WebUI* CreateWebUI(const GURL& url) OVERRIDE;
 204   virtual WebUI* GetWebUI() const OVERRIDE;
 205   virtual WebUI* GetCommittedWebUI() const OVERRIDE;
 206   virtual void SetUserAgentOverride(const std::string& override) OVERRIDE;
 207   virtual const std::string& GetUserAgentOverride() const OVERRIDE;
 208 #if defined(OS_WIN)
 209   virtual void SetParentNativeViewAccessible(
 210       gfx::NativeViewAccessible accessible_parent) OVERRIDE;
 211 #endif
 212   virtual const base::string16& GetTitle() const OVERRIDE;
 213   virtual int32 GetMaxPageID() OVERRIDE;
 214   virtual int32 GetMaxPageIDForSiteInstance(
 215       SiteInstance* site_instance) OVERRIDE;
 216   virtual SiteInstance* GetSiteInstance() const OVERRIDE;
 217   virtual SiteInstance* GetPendingSiteInstance() const OVERRIDE;
 218   virtual bool IsLoading() const OVERRIDE;
 219   virtual bool IsWaitingForResponse() const OVERRIDE;
 220   virtual const net::LoadStateWithParam& GetLoadState() const OVERRIDE;
 221   virtual const base::string16& GetLoadStateHost() const OVERRIDE;
 222   virtual uint64 GetUploadSize() const OVERRIDE;
 223   virtual uint64 GetUploadPosition() const OVERRIDE;
 224   virtual std::set<GURL> GetSitesInTab() const OVERRIDE;
 225   virtual const std::string& GetEncoding() const OVERRIDE;
 226   virtual bool DisplayedInsecureContent() const OVERRIDE;
 227   virtual void IncrementCapturerCount() OVERRIDE;
 228   virtual void DecrementCapturerCount() OVERRIDE;
 229   virtual int GetCapturerCount() const OVERRIDE;
 230   virtual bool IsCrashed() const OVERRIDE;
 231   virtual void SetIsCrashed(base::TerminationStatus status,
 232                             int error_code) OVERRIDE;
 233   virtual base::TerminationStatus GetCrashedStatus() const OVERRIDE;
 234   virtual bool IsBeingDestroyed() const OVERRIDE;
 235   virtual void NotifyNavigationStateChanged(unsigned changed_flags) OVERRIDE;
 236   virtual base::TimeTicks GetLastSelectedTime() const OVERRIDE;
 237   virtual void WasShown() OVERRIDE;
 238   virtual void WasHidden() OVERRIDE;
 239   virtual bool NeedToFireBeforeUnload() OVERRIDE;
 240   virtual void Stop() OVERRIDE;
 241   virtual WebContents* Clone() OVERRIDE;
 242   virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE;
 243   virtual bool ShowingInterstitialPage() const OVERRIDE;
 244   virtual InterstitialPage* GetInterstitialPage() const OVERRIDE;
 245   virtual bool IsSavable() OVERRIDE;
 246   virtual void OnSavePage() OVERRIDE;
 247   virtual bool SavePage(const base::FilePath& main_file,
 248                         const base::FilePath& dir_path,
 249                         SavePageType save_type) OVERRIDE;
 250   virtual void SaveFrame(const GURL& url,
 251                          const Referrer& referrer) OVERRIDE;
 252   virtual void GenerateMHTML(
 253       const base::FilePath& file,
 254       const base::Callback<void(int64)>& callback)
 255           OVERRIDE;
 256   virtual bool IsActiveEntry(int32 page_id) OVERRIDE;
 257
 258   virtual const std::string& GetContentsMimeType() const OVERRIDE;
 259   virtual bool WillNotifyDisconnection() const OVERRIDE;
 260   virtual void SetOverrideEncoding(const std::string& encoding) OVERRIDE;
 261   virtual void ResetOverrideEncoding() OVERRIDE;
 262   virtual RendererPreferences* GetMutableRendererPrefs() OVERRIDE;
 263   virtual void Close() OVERRIDE;
 264   virtual void SystemDragEnded() OVERRIDE;
 265   virtual void UserGestureDone() OVERRIDE;
 266   virtual void SetClosedByUserGesture(bool value) OVERRIDE;
 267   virtual bool GetClosedByUserGesture() const OVERRIDE;
 268   virtual double GetZoomLevel() const OVERRIDE;
 269   virtual int GetZoomPercent(bool* enable_increment,
 270                              bool* enable_decrement) const OVERRIDE;
 271   virtual void ViewSource() OVERRIDE;
 272   virtual void ViewFrameSource(const GURL& url,
 273                                const PageState& page_state) OVERRIDE;
 274   virtual int GetMinimumZoomPercent() const OVERRIDE;
 275   virtual int GetMaximumZoomPercent() const OVERRIDE;
 276   virtual gfx::Size GetPreferredSize() const OVERRIDE;
 277   virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE;
 278   virtual bool HasOpener() const OVERRIDE;
 279   virtual void DidChooseColorInColorChooser(SkColor color) OVERRIDE;
 280   virtual void DidEndColorChooser() OVERRIDE;
 281   virtual int DownloadImage(const GURL& url,
 282                             bool is_favicon,
 283                             uint32_t max_bitmap_size,
 284                             const ImageDownloadCallback& callback) OVERRIDE;
 285   virtual bool IsSubframe() const OVERRIDE;
 286   virtual void Find(int request_id,
 287                     const base::string16& search_text,
 288                     const blink::WebFindOptions& options) OVERRIDE;
 289   virtual void SetZoomLevel(double level) OVERRIDE;
 290   virtual void StopFinding(StopFindAction action) OVERRIDE;
 291 #if defined(OS_ANDROID)
 292   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents()
 293       OVERRIDE;
 294 #endif
 295
 296   // Implementation of PageNavigator.
 297   virtual WebContents* OpenURL(const OpenURLParams& params) OVERRIDE;
 298
 299   // Implementation of IPC::Sender.
 300   virtual bool Send(IPC::Message* message) OVERRIDE;
 301
 302   // RenderFrameHostDelegate ---------------------------------------------------
 303   virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
 304                                  const IPC::Message& message) OVERRIDE;
 305   virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE;
 306   virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
 307   virtual void WorkerCrashed() OVERRIDE;
 308   virtual WebContents* GetAsWebContents() OVERRIDE;
 309
 310   // RenderViewHostDelegate ----------------------------------------------------
 311   virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE;
 312   virtual RenderViewHostDelegate::RendererManagement*
 313       GetRendererManagementDelegate() OVERRIDE;
 314   virtual bool OnMessageReceived(RenderViewHost* render_view_host,
 315                                  const IPC::Message& message) OVERRIDE;
 316   virtual const GURL& GetURL() const OVERRIDE;
 317   virtual const GURL& GetVisibleURL() const OVERRIDE;
 318   virtual const GURL& GetLastCommittedURL() const OVERRIDE;
 319   // RenderFrameHostDelegate has the same method, so list it there because this
 320   // interface is going away.
 321   // virtual WebContents* GetAsWebContents() OVERRIDE;
 322   virtual gfx::Rect GetRootWindowResizerRect() const OVERRIDE;
 323   virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
 324   virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
 325   virtual void RenderViewTerminated(RenderViewHost* render_view_host,
 326                                     base::TerminationStatus status,
 327                                     int error_code) OVERRIDE;
 328   virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
 329   virtual void DidNavigate(
 330       RenderViewHost* render_view_host,
 331       const ViewHostMsg_FrameNavigate_Params& params) OVERRIDE;
 332   virtual void UpdateState(RenderViewHost* render_view_host,
 333                            int32 page_id,
 334                            const PageState& page_state) OVERRIDE;
 335   virtual void UpdateTitle(RenderViewHost* render_view_host,
 336                            int32 page_id,
 337                            const base::string16& title,
 338                            base::i18n::TextDirection title_direction) OVERRIDE;
 339   virtual void UpdateEncoding(RenderViewHost* render_view_host,
 340                               const std::string& encoding) OVERRIDE;
 341   virtual void UpdateTargetURL(int32 page_id, const GURL& url) OVERRIDE;
 342   virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
 343   virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
 344   virtual void SwappedOut(RenderViewHost* render_view_host) OVERRIDE;
 345   virtual void DidStartLoading(RenderViewHost* render_view_host) OVERRIDE;
 346   virtual void DidStopLoading(RenderViewHost* render_view_host) OVERRIDE;
 347   virtual void DidCancelLoading() OVERRIDE;
 348   virtual void DidChangeLoadProgress(double progress) OVERRIDE;
 349   virtual void DidDisownOpener(RenderViewHost* rvh) OVERRIDE;
 350   virtual void DidAccessInitialDocument() OVERRIDE;
 351   virtual void DocumentAvailableInMainFrame(
 352       RenderViewHost* render_view_host) OVERRIDE;
 353   virtual void DocumentOnLoadCompletedInMainFrame(
 354       RenderViewHost* render_view_host,
 355       int32 page_id) OVERRIDE;
 356   virtual void RequestOpenURL(RenderViewHost* rvh,
 357                               const GURL& url,
 358                               const Referrer& referrer,
 359                               WindowOpenDisposition disposition,
 360                               int64 source_frame_id,
 361                               bool should_replace_current_entry,
 362                               bool user_gesture) OVERRIDE;
 363   virtual void RequestTransferURL(
 364       const GURL& url,
 365       const std::vector<GURL>& redirect_chain,
 366       const Referrer& referrer,
 367       PageTransition page_transition,
 368       WindowOpenDisposition disposition,
 369       int64 source_frame_id,
 370       const GlobalRequestID& transferred_global_request_id,
 371       bool should_replace_current_entry,
 372       bool user_gesture) OVERRIDE;
 373   virtual void RouteCloseEvent(RenderViewHost* rvh) OVERRIDE;
 374   virtual void RouteMessageEvent(
 375       RenderViewHost* rvh,
 376       const ViewMsg_PostMessage_Params& params) OVERRIDE;
 377   virtual void RunJavaScriptMessage(RenderViewHost* rvh,
 378                                     const base::string16& message,
 379                                     const base::string16& default_prompt,
 380                                     const GURL& frame_url,
 381                                     JavaScriptMessageType type,
 382                                     IPC::Message* reply_msg,
 383                                     bool* did_suppress_message) OVERRIDE;
 384   virtual void RunBeforeUnloadConfirm(RenderViewHost* rvh,
 385                                       const base::string16& message,
 386                                       bool is_reload,
 387                                       IPC::Message* reply_msg) OVERRIDE;
 388   virtual bool AddMessageToConsole(int32 level,
 389                                    const base::string16& message,
 390                                    int32 line_no,
 391                                    const base::string16& source_id) OVERRIDE;
 392   virtual RendererPreferences GetRendererPrefs(
 393       BrowserContext* browser_context) const OVERRIDE;
 394   virtual WebPreferences GetWebkitPrefs() OVERRIDE;
 395   virtual void OnUserGesture() OVERRIDE;
 396   virtual void OnIgnoredUIEvent() OVERRIDE;
 397   virtual void RendererUnresponsive(RenderViewHost* render_view_host,
 398                                     bool is_during_beforeunload,
 399                                     bool is_during_unload) OVERRIDE;
 400   virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
 401   virtual void LoadStateChanged(const GURL& url,
 402                                 const net::LoadStateWithParam& load_state,
 403                                 uint64 upload_position,
 404                                 uint64 upload_size) OVERRIDE;
 405   virtual void Activate() OVERRIDE;
 406   virtual void Deactivate() OVERRIDE;
 407   virtual void LostCapture() OVERRIDE;
 408   virtual void HandleMouseDown() OVERRIDE;
 409   virtual void HandleMouseUp() OVERRIDE;
 410   virtual void HandlePointerActivate() OVERRIDE;
 411   virtual void HandleGestureBegin() OVERRIDE;
 412   virtual void HandleGestureEnd() OVERRIDE;
 413   virtual void RunFileChooser(
 414       RenderViewHost* render_view_host,
 415       const FileChooserParams& params) OVERRIDE;
 416   virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
 417   virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
 418   virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
 419   virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE;
 420   virtual void RequestToLockMouse(bool user_gesture,
 421                                   bool last_unlocked_by_target) OVERRIDE;
 422   virtual void LostMouseLock() OVERRIDE;
 423   virtual void CreateNewWindow(
 424       int render_process_id,
 425       int route_id,
 426       int main_frame_route_id,
 427       const ViewHostMsg_CreateWindow_Params& params,
 428       SessionStorageNamespace* session_storage_namespace) OVERRIDE;
 429   virtual void CreateNewWidget(int render_process_id,
 430                                int route_id,
 431                                blink::WebPopupType popup_type) OVERRIDE;
 432   virtual void CreateNewFullscreenWidget(int render_process_id,
 433                                          int route_id) OVERRIDE;
 434   virtual void ShowCreatedWindow(int route_id,
 435                                  WindowOpenDisposition disposition,
 436                                  const gfx::Rect& initial_pos,
 437                                  bool user_gesture) OVERRIDE;
 438   virtual void ShowCreatedWidget(int route_id,
 439                                  const gfx::Rect& initial_pos) OVERRIDE;
 440   virtual void ShowCreatedFullscreenWidget(int route_id) OVERRIDE;
 441   virtual void ShowContextMenu(const ContextMenuParams& params) OVERRIDE;
 442   virtual void RequestMediaAccessPermission(
 443       const MediaStreamRequest& request,
 444       const MediaResponseCallback& callback) OVERRIDE;
 445   virtual SessionStorageNamespace* GetSessionStorageNamespace(
 446       SiteInstance* instance) OVERRIDE;
 447   virtual FrameTree* GetFrameTree() OVERRIDE;
 448
 449   // NavigatorDelegate ---------------------------------------------------------
 450
 451   virtual void DidStartProvisionalLoad(
 452       RenderFrameHostImpl* render_frame_host,
 453       int64 frame_id,
 454       int64 parent_frame_id,
 455       bool is_main_frame,
 456       const GURL& validated_url,
 457       bool is_error_page,
 458       bool is_iframe_srcdoc) OVERRIDE;
 459   virtual void DidFailProvisionalLoadWithError(
 460       RenderFrameHostImpl* render_frame_host,
 461       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
 462       OVERRIDE;
 463   virtual void DidRedirectProvisionalLoad(
 464       RenderFrameHostImpl* render_frame_host,
 465       const GURL& validated_target_url) OVERRIDE;
 466   virtual void NotifyChangedNavigationState(
 467       InvalidateTypes changed_flags) OVERRIDE;
 468   virtual void AboutToNavigateRenderFrame(
 469       RenderFrameHostImpl* render_frame_host) OVERRIDE;
 470   virtual void DidStartNavigationToPendingEntry(
 471       RenderFrameHostImpl* render_frame_host,
 472       const GURL& url,
 473       NavigationController::ReloadType reload_type) OVERRIDE;
 474
 475   // RenderWidgetHostDelegate --------------------------------------------------
 476
 477   virtual void RenderWidgetDeleted(
 478       RenderWidgetHostImpl* render_widget_host) OVERRIDE;
 479   virtual bool PreHandleKeyboardEvent(
 480       const NativeWebKeyboardEvent& event,
 481       bool* is_keyboard_shortcut) OVERRIDE;
 482   virtual void HandleKeyboardEvent(
 483       const NativeWebKeyboardEvent& event) OVERRIDE;
 484   virtual bool PreHandleWheelEvent(
 485       const blink::WebMouseWheelEvent& event) OVERRIDE;
 486   virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE;
 487 #if defined(OS_WIN)
 488   virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE;
 489 #endif
 490
 491   // RenderFrameHostManager::Delegate ------------------------------------------
 492
 493   virtual bool CreateRenderViewForRenderManager(
 494       RenderViewHost* render_view_host, int opener_route_id) OVERRIDE;
 495   virtual void BeforeUnloadFiredFromRenderManager(
 496       bool proceed, const base::TimeTicks& proceed_time,
 497       bool* proceed_to_fire_unload) OVERRIDE;
 498   virtual void RenderProcessGoneFromRenderManager(
 499       RenderViewHost* render_view_host) OVERRIDE;
 500   virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE;
 501   virtual void CancelModalDialogsForRenderManager() OVERRIDE;
 502   virtual void NotifySwappedFromRenderManager(
 503       RenderViewHost* old_host, RenderViewHost* new_host) OVERRIDE;
 504   virtual int CreateOpenerRenderViewsForRenderManager(
 505       SiteInstance* instance) OVERRIDE;
 506   virtual NavigationControllerImpl&
 507       GetControllerForRenderManager() OVERRIDE;
 508   virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE;
 509   virtual NavigationEntry*
 510       GetLastCommittedNavigationEntryForRenderManager() OVERRIDE;
 511   virtual bool FocusLocationBarByDefault() OVERRIDE;
 512   virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
 513   virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE;
 514   virtual bool IsHidden() OVERRIDE;
 515
 516   // NotificationObserver ------------------------------------------------------
 517
 518   virtual void Observe(int type,
 519                        const NotificationSource& source,
 520                        const NotificationDetails& details) OVERRIDE;
 521
 522   // NavigationControllerDelegate ----------------------------------------------
 523
 524   virtual WebContents* GetWebContents() OVERRIDE;
 525   virtual void NotifyNavigationEntryCommitted(
 526       const LoadCommittedDetails& load_details) OVERRIDE;
 527
 528   // Invoked before a form repost warning is shown.
 529   virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE;
 530
 531   // Activate this WebContents and show a form repost warning.
 532   virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE;
 533
 534   // Updates the max page ID for the current SiteInstance in this
 535   // WebContentsImpl to be at least |page_id|.
 536   virtual void UpdateMaxPageID(int32 page_id) OVERRIDE;
 537
 538   // Updates the max page ID for the given SiteInstance in this WebContentsImpl
 539   // to be at least |page_id|.
 540   virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
 541                                               int32 page_id) OVERRIDE;
 542
 543   // Copy the current map of SiteInstance ID to max page ID from another tab.
 544   // This is necessary when this tab adopts the NavigationEntries from
 545   // |web_contents|.
 546   virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE;
 547
 548   // Called by the NavigationController to cause the WebContentsImpl to navigate
 549   // to the current pending entry. The NavigationController should be called
 550   // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
 551   // The callbacks can be inside of this function, or at some future time.
 552   //
 553   // The entry has a PageID of -1 if newly created (corresponding to navigation
 554   // to a new URL).
 555   //
 556   // If this method returns false, then the navigation is discarded (equivalent
 557   // to calling DiscardPendingEntry on the NavigationController).
 558   virtual bool NavigateToPendingEntry(
 559       NavigationController::ReloadType reload_type) OVERRIDE;
 560
 561   // Sets the history for this WebContentsImpl to |history_length| entries, and
 562   // moves the current page_id to the last entry in the list if it's valid.
 563   // This is mainly used when a prerendered page is swapped into the current
 564   // tab. The method is virtual for testing.
 565   virtual void SetHistoryLengthAndPrune(
 566       const SiteInstance* site_instance,
 567       int merge_history_length,
 568       int32 minimum_page_id) OVERRIDE;
 569
 570   // Called by InterstitialPageImpl when it creates a RenderFrameHost.
 571   virtual void RenderFrameForInterstitialPageCreated(
 572       RenderFrameHost* render_frame_host) OVERRIDE;
 573
 574   // Sets the passed interstitial as the currently showing interstitial.
 575   // No interstitial page should already be attached.
 576   virtual void AttachInterstitialPage(
 577       InterstitialPageImpl* interstitial_page) OVERRIDE;
 578
 579   // Unsets the currently showing interstitial.
 580   virtual void DetachInterstitialPage() OVERRIDE;
 581
 582   // Changes the IsLoading state and notifies the delegate as needed.
 583   // |details| is used to provide details on the load that just finished
 584   // (but can be null if not applicable).
 585   virtual void SetIsLoading(RenderViewHost* render_view_host,
 586                             bool is_loading,
 587                             LoadNotificationDetails* details) OVERRIDE;
 588
 589   typedef base::Callback<void(WebContents*)> CreatedCallback;
 590
 591  private:
 592   friend class NavigationControllerImpl;
 593   friend class TestNavigationObserver;
 594   friend class WebContentsObserver;
 595   friend class WebContents;  // To implement factory methods.
 596
 597   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
 598   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
 599   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
 600   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 601                            CrossSiteCantPreemptAfterUnload);
 602   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
 603   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
 604   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
 605   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
 606   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
 607
 608   // So InterstitialPageImpl can access SetIsLoading.
 609   friend class InterstitialPageImpl;
 610
 611   // TODO(brettw) TestWebContents shouldn't exist!
 612   friend class TestWebContents;
 613
 614   class DestructionObserver;
 615
 616   // See WebContents::Create for a description of these parameters.
 617   WebContentsImpl(BrowserContext* browser_context,
 618                   WebContentsImpl* opener);
 619
 620   // Add and remove observers for page navigation notifications. The order in
 621   // which notifications are sent to observers is undefined. Clients must be
 622   // sure to remove the observer before they go away.
 623   void AddObserver(WebContentsObserver* observer);
 624   void RemoveObserver(WebContentsObserver* observer);
 625
 626   // Clears this tab's opener if it has been closed.
 627   void OnWebContentsDestroyed(WebContentsImpl* web_contents);
 628
 629   // Creates and adds to the map a destruction observer watching |web_contents|.
 630   // No-op if such an observer already exists.
 631   void AddDestructionObserver(WebContentsImpl* web_contents);
 632
 633   // Deletes and removes from the map a destruction observer
 634   // watching |web_contents|. No-op if there is no such observer.
 635   void RemoveDestructionObserver(WebContentsImpl* web_contents);
 636
 637   // Callback function when showing JS dialogs.
 638   void OnDialogClosed(RenderViewHost* rvh,
 639                       IPC::Message* reply_msg,
 640                       bool success,
 641                       const base::string16& user_input);
 642
 643   // Callback function when requesting permission to access the PPAPI broker.
 644   // |result| is true if permission was granted.
 645   void OnPpapiBrokerPermissionResult(int routing_id, bool result);
 646
 647   bool OnMessageReceived(RenderViewHost* render_view_host,
 648                          RenderFrameHost* render_frame_host,
 649                          const IPC::Message& message);
 650
 651   // IPC message handlers.
 652   void OnDidLoadResourceFromMemoryCache(const GURL& url,
 653                                         const std::string& security_info,
 654                                         const std::string& http_request,
 655                                         const std::string& mime_type,
 656                                         ResourceType::Type resource_type);
 657   void OnDidDisplayInsecureContent();
 658   void OnDidRunInsecureContent(const std::string& security_origin,
 659                                const GURL& target_url);
 660   void OnDocumentLoadedInFrame(int64 frame_id);
 661   void OnDidFinishLoad(int64 frame_id,
 662                        const GURL& url,
 663                        bool is_main_frame);
 664   void OnDidFailLoadWithError(int64 frame_id,
 665                               const GURL& url,
 666                               bool is_main_frame,
 667                               int error_code,
 668                               const base::string16& error_description);
 669   void OnGoToEntryAtOffset(int offset);
 670   void OnUpdateZoomLimits(int minimum_percent,
 671                           int maximum_percent,
 672                           bool remember);
 673   void OnEnumerateDirectory(int request_id, const base::FilePath& path);
 674   void OnJSOutOfMemory();
 675
 676   void OnRegisterProtocolHandler(const std::string& protocol,
 677                                  const GURL& url,
 678                                  const base::string16& title,
 679                                  bool user_gesture);
 680   void OnFindReply(int request_id,
 681                    int number_of_matches,
 682                    const gfx::Rect& selection_rect,
 683                    int active_match_ordinal,
 684                    bool final_update);
 685 #if defined(OS_ANDROID)
 686   void OnFindMatchRectsReply(int version,
 687                              const std::vector<gfx::RectF>& rects,
 688                              const gfx::RectF& active_rect);
 689
 690   void OnOpenDateTimeDialog(
 691       const ViewHostMsg_DateTimeDialogValue_Params& value);
 692   void OnJavaBridgeGetChannelHandle(IPC::Message* reply_msg);
 693 #endif
 694   void OnPepperPluginHung(int plugin_child_id,
 695                           const base::FilePath& path,
 696                           bool is_hung);
 697   void OnPluginCrashed(const base::FilePath& plugin_path,
 698                        base::ProcessId plugin_pid);
 699   void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
 700   void OnOpenColorChooser(int color_chooser_id,
 701                           SkColor color,
 702                           const std::vector<ColorSuggestion>& suggestions);
 703   void OnEndColorChooser(int color_chooser_id);
 704   void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
 705   void OnWebUISend(const GURL& source_url,
 706                    const std::string& name,
 707                    const base::ListValue& args);
 708   void OnRequestPpapiBrokerPermission(int routing_id,
 709                                       const GURL& url,
 710                                       const base::FilePath& plugin_path);
 711   void OnBrowserPluginMessage(const IPC::Message& message);
 712   void OnDidDownloadImage(int id,
 713                           int http_status_code,
 714                           const GURL& image_url,
 715                           const std::vector<SkBitmap>& bitmaps,
 716                           const std::vector<gfx::Size>& original_bitmap_sizes);
 717   void OnUpdateFaviconURL(int32 page_id,
 718                           const std::vector<FaviconURL>& candidates);
 719   void OnFirstVisuallyNonEmptyPaint(int32 page_id);
 720   void OnMediaNotification(int64 player_cookie,
 721                            bool has_video,
 722                            bool has_audio,
 723                            bool is_playing);
 724   void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
 725                                const base::string16& main_text,
 726                                const base::string16& sub_text);
 727   void OnHideValidationMessage();
 728   void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
 729
 730
 731   // Called by derived classes to indicate that we're no longer waiting for a
 732   // response. This won't actually update the throbber, but it will get picked
 733   // up at the next animation step if the throbber is going.
 734   void SetNotWaitingForResponse() { waiting_for_response_ = false; }
 735
 736   // Navigation helpers --------------------------------------------------------
 737   //
 738   // These functions are helpers for Navigate() and DidNavigate().
 739
 740   // Handles post-navigation tasks in DidNavigate AFTER the entry has been
 741   // committed to the navigation controller. Note that the navigation entry is
 742   // not provided since it may be invalid/changed after being committed. The
 743   // current navigation entry is in the NavigationController at this point.
 744   void DidNavigateMainFramePostCommit(
 745       const LoadCommittedDetails& details,
 746       const ViewHostMsg_FrameNavigate_Params& params);
 747   void DidNavigateAnyFramePostCommit(
 748       RenderViewHost* render_view_host,
 749       const LoadCommittedDetails& details,
 750       const ViewHostMsg_FrameNavigate_Params& params);
 751
 752   // Specifies whether the passed in URL should be assigned as the site of the
 753   // current SiteInstance, if it does not yet have a site.
 754   bool ShouldAssignSiteForURL(const GURL& url);
 755
 756   // If our controller was restored, update the max page ID associated with the
 757   // given RenderViewHost to be larger than the number of restored entries.
 758   // This is called in CreateRenderView before any navigations in the RenderView
 759   // have begun, to prevent any races in updating RenderView::next_page_id.
 760   void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
 761
 762   // Saves the given title to the navigation entry and does associated work. It
 763   // will update history and the view for the new title, and also synthesize
 764   // titles for file URLs that have none (so we require that the URL of the
 765   // entry already be set).
 766   //
 767   // This is used as the backend for state updates, which include a new title,
 768   // or the dedicated set title message. It returns true if the new title is
 769   // different and was therefore updated.
 770   bool UpdateTitleForEntry(NavigationEntryImpl* entry,
 771                            const base::string16& title);
 772
 773   // Recursively creates swapped out RenderViews for this tab's opener chain
 774   // (including this tab) in the given SiteInstance, allowing other tabs to send
 775   // cross-process JavaScript calls to their opener(s).  Returns the route ID of
 776   // this tab's RenderView for |instance|.
 777   int CreateOpenerRenderViews(SiteInstance* instance);
 778
 779   // Helper for CreateNewWidget/CreateNewFullscreenWidget.
 780   void CreateNewWidget(int render_process_id,
 781                        int route_id,
 782                        bool is_fullscreen,
 783                        blink::WebPopupType popup_type);
 784
 785   // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
 786   void ShowCreatedWidget(int route_id,
 787                          bool is_fullscreen,
 788                          const gfx::Rect& initial_pos);
 789
 790   // Finds the new RenderWidgetHost and returns it. Note that this can only be
 791   // called once as this call also removes it from the internal map.
 792   RenderWidgetHostView* GetCreatedWidget(int route_id);
 793
 794   // Finds the new WebContentsImpl by route_id, initializes it for
 795   // renderer-initiated creation, and returns it. Note that this can only be
 796   // called once as this call also removes it from the internal map.
 797   WebContentsImpl* GetCreatedWindow(int route_id);
 798
 799   // Returns the RenderWidgetHostView that is associated with a native window
 800   // and can be used in showing created widgets.
 801   // If this WebContents belongs to a browser plugin guest, there is no native
 802   // window 'view' associated with this WebContents. This method returns the
 803   // 'view' of the embedder instead.
 804   RenderWidgetHostViewPort* GetRenderWidgetHostViewPort() const;
 805
 806   // Misc non-view stuff -------------------------------------------------------
 807
 808   // Helper functions for sending notifications.
 809   void NotifySwapped(RenderViewHost* old_host, RenderViewHost* new_host);
 810   void NotifyDisconnected();
 811
 812   void SetEncoding(const std::string& encoding);
 813
 814   // TODO(creis): This should take in a FrameTreeNode to know which node's
 815   // render manager to return.  For now, we just return the root's.
 816   RenderFrameHostManager* GetRenderManager() const;
 817
 818   RenderViewHostImpl* GetRenderViewHostImpl();
 819
 820   // Removes browser plugin embedder if there is one.
 821   void RemoveBrowserPluginEmbedder();
 822
 823   // Clear |render_view_host|'s PowerSaveBlockers.
 824   void ClearPowerSaveBlockers(RenderViewHost* render_view_host);
 825
 826   // Clear all PowerSaveBlockers, leave power_save_blocker_ empty.
 827   void ClearAllPowerSaveBlockers();
 828
 829   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
 830   gfx::Size GetSizeForNewRenderView() const;
 831
 832   void OnFrameRemoved(RenderViewHostImpl* render_view_host, int64 frame_id);
 833
 834   // Adds/removes a callback called on creation of each new WebContents.
 835   // Deprecated, about to remove.
 836   static void AddCreatedCallback(const CreatedCallback& callback);
 837   static void RemoveCreatedCallback(const CreatedCallback& callback);
 838
 839   // Data for core operation ---------------------------------------------------
 840
 841   // Delegate for notifying our owner about stuff. Not owned by us.
 842   WebContentsDelegate* delegate_;
 843
 844   // Handles the back/forward list and loading.
 845   NavigationControllerImpl controller_;
 846
 847   // The corresponding view.
 848   scoped_ptr<WebContentsViewPort> view_;
 849
 850   // The view of the RVHD. Usually this is our WebContentsView implementation,
 851   // but if an embedder uses a different WebContentsView, they'll need to
 852   // provide this.
 853   RenderViewHostDelegateView* render_view_host_delegate_view_;
 854
 855   // Tracks created WebContentsImpl objects that have not been shown yet. They
 856   // are identified by the route ID passed to CreateNewWindow.
 857   typedef std::map<int, WebContentsImpl*> PendingContents;
 858   PendingContents pending_contents_;
 859
 860   // These maps hold on to the widgets that we created on behalf of the renderer
 861   // that haven't shown yet.
 862   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
 863   PendingWidgetViews pending_widget_views_;
 864
 865   typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
 866   DestructionObservers destruction_observers_;
 867
 868   // A list of observers notified when page state changes. Weak references.
 869   // This MUST be listed above frame_tree_ since at destruction time the
 870   // latter might cause RenderViewHost's destructor to call us and we might use
 871   // the observer list then.
 872   ObserverList<WebContentsObserver> observers_;
 873
 874   // The tab that opened this tab, if any.  Will be set to null if the opener
 875   // is closed.
 876   WebContentsImpl* opener_;
 877
 878 #if defined(OS_WIN)
 879   gfx::NativeViewAccessible accessible_parent_;
 880 #endif
 881
 882   // Helper classes ------------------------------------------------------------
 883
 884   // Maps the RenderViewHost to its media_player_cookie and PowerSaveBlocker
 885   // pairs. Key is the RenderViewHost, value is the map which maps player_cookie
 886   // on to PowerSaveBlocker.
 887   typedef std::map<RenderViewHost*, std::map<int64, PowerSaveBlocker*> >
 888       PowerSaveBlockerMap;
 889   PowerSaveBlockerMap power_save_blockers_;
 890
 891   // Manages the frame tree of the page and process swaps in each node.
 892   FrameTree frame_tree_;
 893
 894 #if defined(OS_ANDROID)
 895   // Manages injecting Java objects into all RenderViewHosts associated with
 896   // this WebContentsImpl.
 897   scoped_ptr<JavaBridgeDispatcherHostManager>
 898       java_bridge_dispatcher_host_manager_;
 899 #endif
 900
 901   // SavePackage, lazily created.
 902   scoped_refptr<SavePackage> save_package_;
 903
 904   // Data for loading state ----------------------------------------------------
 905
 906   // Indicates whether we're currently loading a resource.
 907   bool is_loading_;
 908
 909   // Indicates if the tab is considered crashed.
 910   base::TerminationStatus crashed_status_;
 911   int crashed_error_code_;
 912
 913   // Whether this WebContents is waiting for a first-response for the
 914   // main resource of the page. This controls whether the throbber state is
 915   // "waiting" or "loading."
 916   bool waiting_for_response_;
 917
 918   // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
 919   // to a given tab and SiteInstance, and must be valid for the lifetime of the
 920   // WebContentsImpl.
 921   std::map<int32, int32> max_page_ids_;
 922
 923   // The current load state and the URL associated with it.
 924   net::LoadStateWithParam load_state_;
 925   base::string16 load_state_host_;
 926   // Upload progress, for displaying in the status bar.
 927   // Set to zero when there is no significant upload happening.
 928   uint64 upload_size_;
 929   uint64 upload_position_;
 930
 931   // Data for current page -----------------------------------------------------
 932
 933   // When a title cannot be taken from any entry, this title will be used.
 934   base::string16 page_title_when_no_navigation_entry_;
 935
 936   // When a navigation occurs, we record its contents MIME type. It can be
 937   // used to check whether we can do something for some special contents.
 938   std::string contents_mime_type_;
 939
 940   // Character encoding.
 941   std::string encoding_;
 942
 943   // True if this is a secure page which displayed insecure content.
 944   bool displayed_insecure_content_;
 945
 946   // Data for misc internal state ----------------------------------------------
 947
 948   // When > 0, the WebContents is currently being captured (e.g., for
 949   // screenshots or mirroring); and the underlying RenderWidgetHost should not
 950   // be told it is hidden.
 951   int capturer_count_;
 952
 953   // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
 954   bool should_normally_be_visible_;
 955
 956   // See getter above.
 957   bool is_being_destroyed_;
 958
 959   // Indicates whether we should notify about disconnection of this
 960   // WebContentsImpl. This is used to ensure disconnection notifications only
 961   // happen if a connection notification has happened and that they happen only
 962   // once.
 963   bool notify_disconnection_;
 964
 965   // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
 966   // delegate of this WebContentsImpl is nulled before its destructor is called.
 967   JavaScriptDialogManager* dialog_manager_;
 968
 969   // Set to true when there is an active "before unload" dialog.  When true,
 970   // we've forced the throbber to start in Navigate, and we need to remember to
 971   // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
 972   bool is_showing_before_unload_dialog_;
 973
 974   // Settings that get passed to the renderer process.
 975   RendererPreferences renderer_preferences_;
 976
 977   // The time that this tab was last selected.
 978   base::TimeTicks last_selected_time_;
 979
 980   // See description above setter.
 981   bool closed_by_user_gesture_;
 982
 983   // Minimum/maximum zoom percent.
 984   int minimum_zoom_percent_;
 985   int maximum_zoom_percent_;
 986   // If true, the default zoom limits have been overriden for this tab, in which
 987   // case we don't want saved settings to apply to it and we don't want to
 988   // remember it.
 989   bool temporary_zoom_settings_;
 990
 991   // The intrinsic size of the page.
 992   gfx::Size preferred_size_;
 993
 994 #if defined(OS_ANDROID)
 995   // Date time chooser opened by this tab.
 996   // Only used in Android since all other platforms use a multi field UI.
 997   scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
 998 #endif
 999
1000   // Color chooser that was opened by this tab.
1001   scoped_ptr<ColorChooser> color_chooser_;
1002
1003   // A unique identifier for the current color chooser.  Identifiers are unique
1004   // across a renderer process.  This avoids race conditions in synchronizing
1005   // the browser and renderer processes.  For example, if a renderer closes one
1006   // chooser and opens another, and simultaneously the user picks a color in the
1007   // first chooser, the IDs can be used to drop the "chose a color" message
1008   // rather than erroneously tell the renderer that the user picked a color in
1009   // the second chooser.
1010   int color_chooser_identifier_;
1011
1012   // Manages the embedder state for browser plugins, if this WebContents is an
1013   // embedder; NULL otherwise.
1014   scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1015   // Manages the guest state for browser plugin, if this WebContents is a guest;
1016   // NULL otherwise.
1017   scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1018
1019   // This must be at the end, or else we might get notifications and use other
1020   // member variables that are gone.
1021   NotificationRegistrar registrar_;
1022
1023   // Used during IPC message dispatching from the RenderView so that the
1024   // handlers can get a pointer to the RVH through which the message was
1025   // received.
1026   RenderViewHost* render_view_message_source_;
1027
1028   // All live RenderWidgetHostImpls that are created by this object and may
1029   // outlive it.
1030   std::set<RenderWidgetHostImpl*> created_widgets_;
1031
1032   // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1033   int fullscreen_widget_routing_id_;
1034
1035   // Maps the ids of pending image downloads to their callbacks
1036   typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1037   ImageDownloadMap image_download_map_;
1038
1039   // Whether this WebContents is responsible for displaying a subframe in a
1040   // different process from its parent page.
1041   bool is_subframe_;
1042
1043   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1044 };
1045
1046 }  // namespace content
1047
1048 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_