web_contents_impl.h revision e5d81f57cb97b3b6b7fccc9c5610d21eb81db09d 
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/ax_event_notification_details.h"
28#include "content/public/browser/notification_observer.h"
29#include "content/public/browser/notification_registrar.h"
30#include "content/public/browser/web_contents.h"
31#include "content/public/common/page_transition_types.h"
32#include "content/public/common/renderer_preferences.h"
33#include "content/public/common/three_d_api_types.h"
34#include "net/base/load_states.h"
35#include "third_party/WebKit/public/web/WebDragOperation.h"
36#include "ui/gfx/rect_f.h"
37#include "ui/gfx/size.h"
38#include "webkit/common/resource_type.h"
39
40struct BrowserPluginHostMsg_ResizeGuest_Params;
41struct ViewHostMsg_DateTimeDialogValue_Params;
42struct ViewMsg_PostMessage_Params;
43
44namespace content {
45class BrowserPluginEmbedder;
46class BrowserPluginGuest;
47class BrowserPluginGuestManager;
48class ColorChooser;
49class DateTimeChooserAndroid;
50class DownloadItem;
51class InterstitialPageImpl;
52class JavaBridgeDispatcherHostManager;
53class JavaScriptDialogManager;
54class PowerSaveBlocker;
55class RenderViewHost;
56class RenderViewHostDelegateView;
57class RenderViewHostImpl;
58class RenderWidgetHostImpl;
59class RenderWidgetHostViewPort;
60class SavePackage;
61class SessionStorageNamespaceImpl;
62class SiteInstance;
63class TestWebContents;
64class WebContentsDelegate;
65class WebContentsImpl;
66class WebContentsObserver;
67class WebContentsViewPort;
68class WebContentsViewDelegate;
69struct AXEventNotificationDetails;
70struct ColorSuggestion;
71struct FaviconURL;
72struct LoadNotificationDetails;
73struct ResourceRedirectDetails;
74struct ResourceRequestDetails;
75
76// Factory function for the implementations that content knows about. Takes
77// ownership of |delegate|.
78WebContentsViewPort* CreateWebContentsView(
79    WebContentsImpl* web_contents,
80    WebContentsViewDelegate* delegate,
81    RenderViewHostDelegateView** render_view_host_delegate_view);
82
83class CONTENT_EXPORT WebContentsImpl
84    : public NON_EXPORTED_BASE(WebContents),
85      public NON_EXPORTED_BASE(RenderFrameHostDelegate),
86      public RenderViewHostDelegate,
87      public RenderWidgetHostDelegate,
88      public RenderFrameHostManager::Delegate,
89      public NotificationObserver,
90      public NON_EXPORTED_BASE(NavigationControllerDelegate),
91      public NON_EXPORTED_BASE(NavigatorDelegate) {
92 public:
93  virtual ~WebContentsImpl();
94
95  static WebContentsImpl* CreateWithOpener(
96      const WebContents::CreateParams& params,
97      WebContentsImpl* opener);
98
99  // Returns the opener WebContentsImpl, if any. This can be set to null if the
100  // opener is closed or the page clears its window.opener.
101  WebContentsImpl* opener() const { return opener_; }
102
103  // Creates a WebContents to be used as a browser plugin guest.
104  static BrowserPluginGuest* CreateGuest(
105      BrowserContext* browser_context,
106      content::SiteInstance* site_instance,
107      int guest_instance_id,
108      scoped_ptr<base::DictionaryValue> extra_params);
109
110  // Creates a swapped out RenderView. This is used by the browser plugin to
111  // create a swapped out RenderView in the embedder render process for the
112  // guest, to expose the guest's window object to the embedder.
113  // This returns the routing ID of the newly created swapped out RenderView.
114  int CreateSwappedOutRenderView(SiteInstance* instance);
115
116  // Complex initialization here. Specifically needed to avoid having
117  // members call back into our virtual functions in the constructor.
118  virtual void Init(const WebContents::CreateParams& params);
119
120  // Returns the SavePackage which manages the page saving job. May be NULL.
121  SavePackage* save_package() const { return save_package_.get(); }
122
123#if defined(OS_ANDROID)
124  JavaBridgeDispatcherHostManager* java_bridge_dispatcher_host_manager() const {
125    return java_bridge_dispatcher_host_manager_.get();
126  }
127
128  // In Android WebView, the RenderView needs created even there is no
129  // navigation entry, this allows Android WebViews to use
130  // javascript: URLs that load into the DOMWindow before the first page
131  // load. This is not safe to do in any context that a web page could get a
132  // reference to the DOMWindow before the first page load.
133  bool CreateRenderViewForInitialEmptyDocument();
134#endif
135
136  // Expose the render manager for testing.
137  // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
138  RenderFrameHostManager* GetRenderManagerForTesting();
139
140  // Returns guest browser plugin object, or NULL if this WebContents is not a
141  // guest.
142  BrowserPluginGuest* GetBrowserPluginGuest() const;
143
144  // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
145  // has a BrowserPluginGuest then that implies that it is being hosted by
146  // a BrowserPlugin object in an embedder renderer process.
147  void SetBrowserPluginGuest(BrowserPluginGuest* guest);
148
149  // Returns embedder browser plugin object, or NULL if this WebContents is not
150  // an embedder.
151  BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
152
153  // Returns the BrowserPluginGuestManager object, or NULL if this web contents
154  // does not have a BrowserPluginGuestManager.
155  BrowserPluginGuestManager* GetBrowserPluginGuestManager() const;
156
157  // Gets the current fullscreen render widget's routing ID. Returns
158  // MSG_ROUTING_NONE when there is no fullscreen render widget.
159  int GetFullscreenWidgetRoutingID() const;
160
161  // Invoked when visible SSL state (as defined by SSLStatus) changes.
162  void DidChangeVisibleSSLState();
163
164  // Informs the render view host and the BrowserPluginEmbedder, if present, of
165  // a Drag Source End.
166  void DragSourceEndedAt(int client_x, int client_y, int screen_x,
167      int screen_y, blink::WebDragOperation operation);
168
169  // Informs the render view host and the BrowserPluginEmbedder, if present, of
170  // a Drag Source Move.
171  void DragSourceMovedTo(int client_x, int client_y,
172                         int screen_x, int screen_y);
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      RenderViewHost* render_view_host,
181      const ResourceRedirectDetails& details);
182
183  // WebContents ------------------------------------------------------
184  virtual WebContentsDelegate* GetDelegate() OVERRIDE;
185  virtual void SetDelegate(WebContentsDelegate* delegate) OVERRIDE;
186  virtual NavigationControllerImpl& GetController() OVERRIDE;
187  virtual const NavigationControllerImpl& GetController() const OVERRIDE;
188  virtual BrowserContext* GetBrowserContext() const OVERRIDE;
189  virtual RenderProcessHost* GetRenderProcessHost() const OVERRIDE;
190  virtual RenderFrameHost* GetMainFrame() OVERRIDE;
191  virtual RenderFrameHost* GetFocusedFrame() OVERRIDE;
192  virtual void ForEachFrame(
193      const base::Callback<void(RenderFrameHost*)>& on_frame) OVERRIDE;
194  virtual void SendToAllFrames(IPC::Message* message) OVERRIDE;
195  virtual RenderViewHost* GetRenderViewHost() const 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(const gfx::Size& capture_size) 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 GetLastActiveTime() 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 ReloadFocusedFrame(bool ignore_cache) OVERRIDE;
243  virtual void FocusThroughTabTraversal(bool reverse) OVERRIDE;
244  virtual bool ShowingInterstitialPage() const OVERRIDE;
245  virtual InterstitialPage* GetInterstitialPage() const OVERRIDE;
246  virtual bool IsSavable() OVERRIDE;
247  virtual void OnSavePage() OVERRIDE;
248  virtual bool SavePage(const base::FilePath& main_file,
249                        const base::FilePath& dir_path,
250                        SavePageType save_type) OVERRIDE;
251  virtual void SaveFrame(const GURL& url,
252                         const Referrer& referrer) OVERRIDE;
253  virtual void GenerateMHTML(
254      const base::FilePath& file,
255      const base::Callback<void(int64)>& callback)
256          OVERRIDE;
257  virtual bool IsActiveEntry(int32 page_id) OVERRIDE;
258
259  virtual const std::string& GetContentsMimeType() const OVERRIDE;
260  virtual bool WillNotifyDisconnection() const OVERRIDE;
261  virtual void SetOverrideEncoding(const std::string& encoding) OVERRIDE;
262  virtual void ResetOverrideEncoding() OVERRIDE;
263  virtual RendererPreferences* GetMutableRendererPrefs() OVERRIDE;
264  virtual void Close() OVERRIDE;
265  virtual void SystemDragEnded() OVERRIDE;
266  virtual void UserGestureDone() OVERRIDE;
267  virtual void SetClosedByUserGesture(bool value) OVERRIDE;
268  virtual bool GetClosedByUserGesture() const OVERRIDE;
269  virtual double GetZoomLevel() const OVERRIDE;
270  virtual int GetZoomPercent(bool* enable_increment,
271                             bool* enable_decrement) const OVERRIDE;
272  virtual void ViewSource() OVERRIDE;
273  virtual void ViewFrameSource(const GURL& url,
274                               const PageState& page_state) OVERRIDE;
275  virtual int GetMinimumZoomPercent() const OVERRIDE;
276  virtual int GetMaximumZoomPercent() const OVERRIDE;
277  virtual gfx::Size GetPreferredSize() const OVERRIDE;
278  virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE;
279  virtual bool HasOpener() const OVERRIDE;
280  virtual void DidChooseColorInColorChooser(SkColor color) OVERRIDE;
281  virtual void DidEndColorChooser() OVERRIDE;
282  virtual int DownloadImage(const GURL& url,
283                            bool is_favicon,
284                            uint32_t max_bitmap_size,
285                            const ImageDownloadCallback& callback) OVERRIDE;
286  virtual bool IsSubframe() const OVERRIDE;
287  virtual void Find(int request_id,
288                    const base::string16& search_text,
289                    const blink::WebFindOptions& options) OVERRIDE;
290  virtual void SetZoomLevel(double level) OVERRIDE;
291  virtual void StopFinding(StopFindAction action) OVERRIDE;
292#if defined(OS_ANDROID)
293  virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents()
294      OVERRIDE;
295#endif
296
297  // Implementation of PageNavigator.
298  virtual WebContents* OpenURL(const OpenURLParams& params) OVERRIDE;
299
300  // Implementation of IPC::Sender.
301  virtual bool Send(IPC::Message* message) OVERRIDE;
302
303  // RenderFrameHostDelegate ---------------------------------------------------
304  virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
305                                 const IPC::Message& message) OVERRIDE;
306  virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE;
307  virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
308  virtual void DidStartLoading(RenderFrameHost* render_frame_host,
309                               bool to_different_document) OVERRIDE;
310  virtual void DidStopLoading(RenderFrameHost* render_frame_host) OVERRIDE;
311  virtual void SwappedOut(RenderFrameHost* render_frame_host) OVERRIDE;
312  virtual void WorkerCrashed(RenderFrameHost* render_frame_host) OVERRIDE;
313  virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
314                               const ContextMenuParams& params) OVERRIDE;
315  virtual WebContents* GetAsWebContents() OVERRIDE;
316
317  // RenderViewHostDelegate ----------------------------------------------------
318  virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE;
319  virtual bool OnMessageReceived(RenderViewHost* render_view_host,
320                                 const IPC::Message& message) OVERRIDE;
321  virtual const GURL& GetURL() const OVERRIDE;
322  virtual const GURL& GetVisibleURL() const OVERRIDE;
323  virtual const GURL& GetLastCommittedURL() const OVERRIDE;
324  // RenderFrameHostDelegate has the same method, so list it there because this
325  // interface is going away.
326  // virtual WebContents* GetAsWebContents() OVERRIDE;
327  virtual gfx::Rect GetRootWindowResizerRect() const OVERRIDE;
328  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
329  virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
330  virtual void RenderViewTerminated(RenderViewHost* render_view_host,
331                                    base::TerminationStatus status,
332                                    int error_code) OVERRIDE;
333  virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
334  virtual void UpdateState(RenderViewHost* render_view_host,
335                           int32 page_id,
336                           const PageState& page_state) OVERRIDE;
337  virtual void UpdateTitle(RenderViewHost* render_view_host,
338                           int32 page_id,
339                           const base::string16& title,
340                           base::i18n::TextDirection title_direction) OVERRIDE;
341  virtual void UpdateEncoding(RenderViewHost* render_view_host,
342                              const std::string& encoding) OVERRIDE;
343  virtual void UpdateTargetURL(int32 page_id, const GURL& url) OVERRIDE;
344  virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
345  virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
346  virtual void DidCancelLoading() OVERRIDE;
347  virtual void DidChangeLoadProgress(double progress) OVERRIDE;
348  virtual void DidDisownOpener(RenderViewHost* rvh) OVERRIDE;
349  virtual void DidAccessInitialDocument() OVERRIDE;
350  virtual void DocumentAvailableInMainFrame(
351      RenderViewHost* render_view_host) OVERRIDE;
352  virtual void DocumentOnLoadCompletedInMainFrame(
353      RenderViewHost* render_view_host,
354      int32 page_id) OVERRIDE;
355  virtual void RouteCloseEvent(RenderViewHost* rvh) OVERRIDE;
356  virtual void RouteMessageEvent(
357      RenderViewHost* rvh,
358      const ViewMsg_PostMessage_Params& params) OVERRIDE;
359  virtual void RunJavaScriptMessage(RenderViewHost* rvh,
360                                    const base::string16& message,
361                                    const base::string16& default_prompt,
362                                    const GURL& frame_url,
363                                    JavaScriptMessageType type,
364                                    IPC::Message* reply_msg,
365                                    bool* did_suppress_message) OVERRIDE;
366  virtual void RunBeforeUnloadConfirm(RenderViewHost* rvh,
367                                      const base::string16& message,
368                                      bool is_reload,
369                                      IPC::Message* reply_msg) OVERRIDE;
370  virtual bool AddMessageToConsole(int32 level,
371                                   const base::string16& message,
372                                   int32 line_no,
373                                   const base::string16& source_id) OVERRIDE;
374  virtual RendererPreferences GetRendererPrefs(
375      BrowserContext* browser_context) const OVERRIDE;
376  virtual WebPreferences GetWebkitPrefs() OVERRIDE;
377  virtual void OnUserGesture() OVERRIDE;
378  virtual void OnIgnoredUIEvent() OVERRIDE;
379  virtual void RendererUnresponsive(RenderViewHost* render_view_host,
380                                    bool is_during_beforeunload,
381                                    bool is_during_unload) OVERRIDE;
382  virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
383  virtual void LoadStateChanged(const GURL& url,
384                                const net::LoadStateWithParam& load_state,
385                                uint64 upload_position,
386                                uint64 upload_size) OVERRIDE;
387  virtual void Activate() OVERRIDE;
388  virtual void Deactivate() OVERRIDE;
389  virtual void LostCapture() OVERRIDE;
390  virtual void HandleMouseDown() OVERRIDE;
391  virtual void HandleMouseUp() OVERRIDE;
392  virtual void HandlePointerActivate() OVERRIDE;
393  virtual void HandleGestureBegin() OVERRIDE;
394  virtual void HandleGestureEnd() OVERRIDE;
395  virtual void RunFileChooser(
396      RenderViewHost* render_view_host,
397      const FileChooserParams& params) OVERRIDE;
398  virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
399  virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
400  virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
401  virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE;
402  virtual void RequestToLockMouse(bool user_gesture,
403                                  bool last_unlocked_by_target) OVERRIDE;
404  virtual void LostMouseLock() OVERRIDE;
405  virtual void CreateNewWindow(
406      int render_process_id,
407      int route_id,
408      int main_frame_route_id,
409      const ViewHostMsg_CreateWindow_Params& params,
410      SessionStorageNamespace* session_storage_namespace) OVERRIDE;
411  virtual void CreateNewWidget(int render_process_id,
412                               int route_id,
413                               blink::WebPopupType popup_type) OVERRIDE;
414  virtual void CreateNewFullscreenWidget(int render_process_id,
415                                         int route_id) OVERRIDE;
416  virtual void ShowCreatedWindow(int route_id,
417                                 WindowOpenDisposition disposition,
418                                 const gfx::Rect& initial_pos,
419                                 bool user_gesture) OVERRIDE;
420  virtual void ShowCreatedWidget(int route_id,
421                                 const gfx::Rect& initial_pos) OVERRIDE;
422  virtual void ShowCreatedFullscreenWidget(int route_id) OVERRIDE;
423  virtual void RequestMediaAccessPermission(
424      const MediaStreamRequest& request,
425      const MediaResponseCallback& callback) OVERRIDE;
426  virtual SessionStorageNamespace* GetSessionStorageNamespace(
427      SiteInstance* instance) OVERRIDE;
428  virtual FrameTree* GetFrameTree() OVERRIDE;
429  virtual void AccessibilityEventReceived(
430      const std::vector<AXEventNotificationDetails>& details) OVERRIDE;
431
432  // NavigatorDelegate ---------------------------------------------------------
433
434  virtual void DidStartProvisionalLoad(
435      RenderFrameHostImpl* render_frame_host,
436      int parent_routing_id,
437      const GURL& validated_url,
438      bool is_error_page,
439      bool is_iframe_srcdoc) OVERRIDE;
440  virtual void DidFailProvisionalLoadWithError(
441      RenderFrameHostImpl* render_frame_host,
442      const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
443      OVERRIDE;
444  virtual void DidFailLoadWithError(
445      RenderFrameHostImpl* render_frame_host,
446      const GURL& url,
447      int error_code,
448      const base::string16& error_description) OVERRIDE;
449  virtual void DidRedirectProvisionalLoad(
450      RenderFrameHostImpl* render_frame_host,
451      const GURL& validated_target_url) OVERRIDE;
452  virtual void DidCommitProvisionalLoad(
453      RenderFrameHostImpl* render_frame_host,
454      const base::string16& frame_unique_name,
455      bool is_main_frame,
456      const GURL& url,
457      PageTransition transition_type) OVERRIDE;
458  virtual void DidNavigateMainFramePreCommit(
459      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
460  virtual void DidNavigateMainFramePostCommit(
461      const LoadCommittedDetails& details,
462      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
463  virtual void DidNavigateAnyFramePostCommit(
464      RenderFrameHostImpl* render_frame_host,
465      const LoadCommittedDetails& details,
466      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) OVERRIDE;
467  virtual void SetMainFrameMimeType(const std::string& mime_type) OVERRIDE;
468  virtual bool CanOverscrollContent() OVERRIDE;
469  virtual void NotifyChangedNavigationState(
470      InvalidateTypes changed_flags) OVERRIDE;
471  virtual void AboutToNavigateRenderFrame(
472      RenderFrameHostImpl* render_frame_host) OVERRIDE;
473  virtual void DidStartNavigationToPendingEntry(
474      RenderFrameHostImpl* render_frame_host,
475      const GURL& url,
476      NavigationController::ReloadType reload_type) OVERRIDE;
477  virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
478                              const OpenURLParams& params) OVERRIDE;
479
480  // RenderWidgetHostDelegate --------------------------------------------------
481
482  virtual void RenderWidgetDeleted(
483      RenderWidgetHostImpl* render_widget_host) OVERRIDE;
484  virtual bool PreHandleKeyboardEvent(
485      const NativeWebKeyboardEvent& event,
486      bool* is_keyboard_shortcut) OVERRIDE;
487  virtual void HandleKeyboardEvent(
488      const NativeWebKeyboardEvent& event) OVERRIDE;
489  virtual bool HandleWheelEvent(
490      const blink::WebMouseWheelEvent& event) OVERRIDE;
491  virtual bool PreHandleGestureEvent(
492      const blink::WebGestureEvent& event) OVERRIDE;
493  virtual bool HandleGestureEvent(
494      const blink::WebGestureEvent& event) OVERRIDE;
495  virtual void DidSendScreenRects(RenderWidgetHostImpl* rwh) OVERRIDE;
496#if defined(OS_WIN)
497  virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE;
498#endif
499
500  // RenderFrameHostManager::Delegate ------------------------------------------
501
502  virtual bool CreateRenderViewForRenderManager(
503      RenderViewHost* render_view_host,
504      int opener_route_id,
505      CrossProcessFrameConnector* frame_connector) OVERRIDE;
506  virtual void BeforeUnloadFiredFromRenderManager(
507      bool proceed, const base::TimeTicks& proceed_time,
508      bool* proceed_to_fire_unload) OVERRIDE;
509  virtual void RenderProcessGoneFromRenderManager(
510      RenderViewHost* render_view_host) OVERRIDE;
511  virtual void UpdateRenderViewSizeForRenderManager() OVERRIDE;
512  virtual void CancelModalDialogsForRenderManager() OVERRIDE;
513  virtual void NotifySwappedFromRenderManager(
514      RenderViewHost* old_host, RenderViewHost* new_host) OVERRIDE;
515  virtual int CreateOpenerRenderViewsForRenderManager(
516      SiteInstance* instance) OVERRIDE;
517  virtual NavigationControllerImpl&
518      GetControllerForRenderManager() OVERRIDE;
519  virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) OVERRIDE;
520  virtual NavigationEntry*
521      GetLastCommittedNavigationEntryForRenderManager() OVERRIDE;
522  virtual bool FocusLocationBarByDefault() OVERRIDE;
523  virtual void SetFocusToLocationBar(bool select_all) OVERRIDE;
524  virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) OVERRIDE;
525  virtual bool IsHidden() OVERRIDE;
526
527  // NotificationObserver ------------------------------------------------------
528
529  virtual void Observe(int type,
530                       const NotificationSource& source,
531                       const NotificationDetails& details) OVERRIDE;
532
533  // NavigationControllerDelegate ----------------------------------------------
534
535  virtual WebContents* GetWebContents() OVERRIDE;
536  virtual void NotifyNavigationEntryCommitted(
537      const LoadCommittedDetails& load_details) OVERRIDE;
538
539  // Invoked before a form repost warning is shown.
540  virtual void NotifyBeforeFormRepostWarningShow() OVERRIDE;
541
542  // Activate this WebContents and show a form repost warning.
543  virtual void ActivateAndShowRepostFormWarningDialog() OVERRIDE;
544
545  // Updates the max page ID for the current SiteInstance in this
546  // WebContentsImpl to be at least |page_id|.
547  virtual void UpdateMaxPageID(int32 page_id) OVERRIDE;
548
549  // Updates the max page ID for the given SiteInstance in this WebContentsImpl
550  // to be at least |page_id|.
551  virtual void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
552                                              int32 page_id) OVERRIDE;
553
554  // Copy the current map of SiteInstance ID to max page ID from another tab.
555  // This is necessary when this tab adopts the NavigationEntries from
556  // |web_contents|.
557  virtual void CopyMaxPageIDsFrom(WebContents* web_contents) OVERRIDE;
558
559  // Called by the NavigationController to cause the WebContentsImpl to navigate
560  // to the current pending entry. The NavigationController should be called
561  // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
562  // The callbacks can be inside of this function, or at some future time.
563  //
564  // The entry has a PageID of -1 if newly created (corresponding to navigation
565  // to a new URL).
566  //
567  // If this method returns false, then the navigation is discarded (equivalent
568  // to calling DiscardPendingEntry on the NavigationController).
569  virtual bool NavigateToPendingEntry(
570      NavigationController::ReloadType reload_type) OVERRIDE;
571
572  // Sets the history for this WebContentsImpl to |history_length| entries, and
573  // moves the current page_id to the last entry in the list if it's valid.
574  // This is mainly used when a prerendered page is swapped into the current
575  // tab. The method is virtual for testing.
576  virtual void SetHistoryLengthAndPrune(
577      const SiteInstance* site_instance,
578      int merge_history_length,
579      int32 minimum_page_id) OVERRIDE;
580
581  // Called by InterstitialPageImpl when it creates a RenderFrameHost.
582  virtual void RenderFrameForInterstitialPageCreated(
583      RenderFrameHost* render_frame_host) OVERRIDE;
584
585  // Sets the passed interstitial as the currently showing interstitial.
586  // No interstitial page should already be attached.
587  virtual void AttachInterstitialPage(
588      InterstitialPageImpl* interstitial_page) OVERRIDE;
589
590  // Unsets the currently showing interstitial.
591  virtual void DetachInterstitialPage() OVERRIDE;
592
593  // Changes the IsLoading state and notifies the delegate as needed.
594  // |details| is used to provide details on the load that just finished
595  // (but can be null if not applicable).
596  virtual void SetIsLoading(RenderViewHost* render_view_host,
597                            bool is_loading,
598                            bool to_different_document,
599                            LoadNotificationDetails* details) OVERRIDE;
600
601  typedef base::Callback<void(WebContents*)> CreatedCallback;
602
603 private:
604  friend class NavigationControllerImpl;
605  friend class TestNavigationObserver;
606  friend class WebContentsObserver;
607  friend class WebContents;  // To implement factory methods.
608
609  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
610  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
611  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
612  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
613                           CrossSiteCantPreemptAfterUnload);
614  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
615  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
616  FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
617  FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
618  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
619  FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
620
621  // So InterstitialPageImpl can access SetIsLoading.
622  friend class InterstitialPageImpl;
623
624  // TODO(brettw) TestWebContents shouldn't exist!
625  friend class TestWebContents;
626
627  class DestructionObserver;
628
629  // See WebContents::Create for a description of these parameters.
630  WebContentsImpl(BrowserContext* browser_context,
631                  WebContentsImpl* opener);
632
633  // Add and remove observers for page navigation notifications. The order in
634  // which notifications are sent to observers is undefined. Clients must be
635  // sure to remove the observer before they go away.
636  void AddObserver(WebContentsObserver* observer);
637  void RemoveObserver(WebContentsObserver* observer);
638
639  // Clears this tab's opener if it has been closed.
640  void OnWebContentsDestroyed(WebContentsImpl* web_contents);
641
642  // Creates and adds to the map a destruction observer watching |web_contents|.
643  // No-op if such an observer already exists.
644  void AddDestructionObserver(WebContentsImpl* web_contents);
645
646  // Deletes and removes from the map a destruction observer
647  // watching |web_contents|. No-op if there is no such observer.
648  void RemoveDestructionObserver(WebContentsImpl* web_contents);
649
650  // Callback function when showing JS dialogs.
651  void OnDialogClosed(RenderViewHost* rvh,
652                      IPC::Message* reply_msg,
653                      bool success,
654                      const base::string16& user_input);
655
656  // Callback function when requesting permission to access the PPAPI broker.
657  // |result| is true if permission was granted.
658  void OnPpapiBrokerPermissionResult(int routing_id, bool result);
659
660  bool OnMessageReceived(RenderViewHost* render_view_host,
661                         RenderFrameHost* render_frame_host,
662                         const IPC::Message& message);
663
664  // IPC message handlers.
665  void OnDidLoadResourceFromMemoryCache(const GURL& url,
666                                        const std::string& security_info,
667                                        const std::string& http_request,
668                                        const std::string& mime_type,
669                                        ResourceType::Type resource_type);
670  void OnDidDisplayInsecureContent();
671  void OnDidRunInsecureContent(const std::string& security_origin,
672                               const GURL& target_url);
673  void OnDocumentLoadedInFrame();
674  void OnDidFinishLoad(const GURL& url);
675  void OnGoToEntryAtOffset(int offset);
676  void OnUpdateZoomLimits(int minimum_percent,
677                          int maximum_percent,
678                          bool remember);
679  void OnEnumerateDirectory(int request_id, const base::FilePath& path);
680
681  void OnRegisterProtocolHandler(const std::string& protocol,
682                                 const GURL& url,
683                                 const base::string16& title,
684                                 bool user_gesture);
685  void OnFindReply(int request_id,
686                   int number_of_matches,
687                   const gfx::Rect& selection_rect,
688                   int active_match_ordinal,
689                   bool final_update);
690#if defined(OS_ANDROID)
691  void OnFindMatchRectsReply(int version,
692                             const std::vector<gfx::RectF>& rects,
693                             const gfx::RectF& active_rect);
694
695  void OnOpenDateTimeDialog(
696      const ViewHostMsg_DateTimeDialogValue_Params& value);
697  void OnJavaBridgeGetChannelHandle(IPC::Message* reply_msg);
698#endif
699  void OnPepperPluginHung(int plugin_child_id,
700                          const base::FilePath& path,
701                          bool is_hung);
702  void OnPluginCrashed(const base::FilePath& plugin_path,
703                       base::ProcessId plugin_pid);
704  void OnDomOperationResponse(const std::string& json_string,
705                              int automation_id);
706  void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
707  void OnOpenColorChooser(int color_chooser_id,
708                          SkColor color,
709                          const std::vector<ColorSuggestion>& suggestions);
710  void OnEndColorChooser(int color_chooser_id);
711  void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
712  void OnWebUISend(const GURL& source_url,
713                   const std::string& name,
714                   const base::ListValue& args);
715  void OnRequestPpapiBrokerPermission(int routing_id,
716                                      const GURL& url,
717                                      const base::FilePath& plugin_path);
718  void OnBrowserPluginMessage(const IPC::Message& message);
719  void OnDidDownloadImage(int id,
720                          int http_status_code,
721                          const GURL& image_url,
722                          const std::vector<SkBitmap>& bitmaps,
723                          const std::vector<gfx::Size>& original_bitmap_sizes);
724  void OnUpdateFaviconURL(int32 page_id,
725                          const std::vector<FaviconURL>& candidates);
726  void OnFirstVisuallyNonEmptyPaint(int32 page_id);
727  void OnMediaPlayingNotification(int64 player_cookie,
728                                  bool has_video,
729                                  bool has_audio);
730  void OnMediaPausedNotification(int64 player_cookie);
731  void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
732                               const base::string16& main_text,
733                               const base::string16& sub_text);
734  void OnHideValidationMessage();
735  void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
736
737
738  // Called by derived classes to indicate that we're no longer waiting for a
739  // response. This won't actually update the throbber, but it will get picked
740  // up at the next animation step if the throbber is going.
741  void SetNotWaitingForResponse() { waiting_for_response_ = false; }
742
743  // Navigation helpers --------------------------------------------------------
744  //
745  // These functions are helpers for Navigate() and DidNavigate().
746
747  // Handles post-navigation tasks in DidNavigate AFTER the entry has been
748  // committed to the navigation controller. Note that the navigation entry is
749  // not provided since it may be invalid/changed after being committed. The
750  // current navigation entry is in the NavigationController at this point.
751
752  // If our controller was restored, update the max page ID associated with the
753  // given RenderViewHost to be larger than the number of restored entries.
754  // This is called in CreateRenderView before any navigations in the RenderView
755  // have begun, to prevent any races in updating RenderView::next_page_id.
756  void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
757
758  // Saves the given title to the navigation entry and does associated work. It
759  // will update history and the view for the new title, and also synthesize
760  // titles for file URLs that have none (so we require that the URL of the
761  // entry already be set).
762  //
763  // This is used as the backend for state updates, which include a new title,
764  // or the dedicated set title message. It returns true if the new title is
765  // different and was therefore updated.
766  bool UpdateTitleForEntry(NavigationEntryImpl* entry,
767                           const base::string16& title);
768
769  // Recursively creates swapped out RenderViews for this tab's opener chain
770  // (including this tab) in the given SiteInstance, allowing other tabs to send
771  // cross-process JavaScript calls to their opener(s).  Returns the route ID of
772  // this tab's RenderView for |instance|.
773  int CreateOpenerRenderViews(SiteInstance* instance);
774
775  // Helper for CreateNewWidget/CreateNewFullscreenWidget.
776  void CreateNewWidget(int render_process_id,
777                       int route_id,
778                       bool is_fullscreen,
779                       blink::WebPopupType popup_type);
780
781  // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
782  void ShowCreatedWidget(int route_id,
783                         bool is_fullscreen,
784                         const gfx::Rect& initial_pos);
785
786  // Finds the new RenderWidgetHost and returns it. Note that this can only be
787  // called once as this call also removes it from the internal map.
788  RenderWidgetHostView* GetCreatedWidget(int route_id);
789
790  // Finds the new WebContentsImpl by route_id, initializes it for
791  // renderer-initiated creation, and returns it. Note that this can only be
792  // called once as this call also removes it from the internal map.
793  WebContentsImpl* GetCreatedWindow(int route_id);
794
795  // Returns the RenderWidgetHostView that is associated with a native window
796  // and can be used in showing created widgets.
797  // If this WebContents belongs to a browser plugin guest, there is no native
798  // window 'view' associated with this WebContents. This method returns the
799  // 'view' of the embedder instead.
800  RenderWidgetHostViewPort* GetRenderWidgetHostViewPort() const;
801
802  // Misc non-view stuff -------------------------------------------------------
803
804  // Helper functions for sending notifications.
805  void NotifySwapped(RenderViewHost* old_host, RenderViewHost* new_host);
806  void NotifyDisconnected();
807
808  void SetEncoding(const std::string& encoding);
809
810  // TODO(creis): This should take in a FrameTreeNode to know which node's
811  // render manager to return.  For now, we just return the root's.
812  RenderFrameHostManager* GetRenderManager() const;
813
814  RenderViewHostImpl* GetRenderViewHostImpl();
815
816  // Removes browser plugin embedder if there is one.
817  void RemoveBrowserPluginEmbedder();
818
819  // Clear |render_view_host|'s PowerSaveBlockers.
820  void ClearPowerSaveBlockers(RenderViewHost* render_view_host);
821
822  // Clear all PowerSaveBlockers, leave power_save_blocker_ empty.
823  void ClearAllPowerSaveBlockers();
824
825  // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
826  gfx::Size GetSizeForNewRenderView() const;
827
828  void OnFrameRemoved(RenderViewHostImpl* render_view_host,
829                      int frame_routing_id);
830
831  // Helper method that's called whenever |preferred_size_| or
832  // |preferred_size_for_capture_| changes, to propagate the new value to the
833  // |delegate_|.
834  void OnPreferredSizeChanged(const gfx::Size& old_size);
835
836  // Adds/removes a callback called on creation of each new WebContents.
837  // Deprecated, about to remove.
838  static void AddCreatedCallback(const CreatedCallback& callback);
839  static void RemoveCreatedCallback(const CreatedCallback& callback);
840
841  // Data for core operation ---------------------------------------------------
842
843  // Delegate for notifying our owner about stuff. Not owned by us.
844  WebContentsDelegate* delegate_;
845
846  // Handles the back/forward list and loading.
847  NavigationControllerImpl controller_;
848
849  // The corresponding view.
850  scoped_ptr<WebContentsViewPort> view_;
851
852  // The view of the RVHD. Usually this is our WebContentsView implementation,
853  // but if an embedder uses a different WebContentsView, they'll need to
854  // provide this.
855  RenderViewHostDelegateView* render_view_host_delegate_view_;
856
857  // Tracks created WebContentsImpl objects that have not been shown yet. They
858  // are identified by the route ID passed to CreateNewWindow.
859  typedef std::map<int, WebContentsImpl*> PendingContents;
860  PendingContents pending_contents_;
861
862  // These maps hold on to the widgets that we created on behalf of the renderer
863  // that haven't shown yet.
864  typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
865  PendingWidgetViews pending_widget_views_;
866
867  typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
868  DestructionObservers destruction_observers_;
869
870  // A list of observers notified when page state changes. Weak references.
871  // This MUST be listed above frame_tree_ since at destruction time the
872  // latter might cause RenderViewHost's destructor to call us and we might use
873  // the observer list then.
874  ObserverList<WebContentsObserver> observers_;
875
876  // The tab that opened this tab, if any.  Will be set to null if the opener
877  // is closed.
878  WebContentsImpl* opener_;
879
880#if defined(OS_WIN)
881  gfx::NativeViewAccessible accessible_parent_;
882#endif
883
884  // Helper classes ------------------------------------------------------------
885
886  // Maps the RenderViewHost to its media_player_cookie and PowerSaveBlocker
887  // pairs. Key is the RenderViewHost, value is the map which maps player_cookie
888  // on to PowerSaveBlocker.
889  typedef std::map<RenderViewHost*, std::map<int64, PowerSaveBlocker*> >
890      PowerSaveBlockerMap;
891  PowerSaveBlockerMap power_save_blockers_;
892
893  // Manages the frame tree of the page and process swaps in each node.
894  FrameTree frame_tree_;
895
896#if defined(OS_ANDROID)
897  // Manages injecting Java objects into all RenderViewHosts associated with
898  // this WebContentsImpl.
899  scoped_ptr<JavaBridgeDispatcherHostManager>
900      java_bridge_dispatcher_host_manager_;
901#endif
902
903  // SavePackage, lazily created.
904  scoped_refptr<SavePackage> save_package_;
905
906  // Data for loading state ----------------------------------------------------
907
908  // Indicates whether we're currently loading a resource.
909  bool is_loading_;
910
911  // Indicates if the tab is considered crashed.
912  base::TerminationStatus crashed_status_;
913  int crashed_error_code_;
914
915  // Whether this WebContents is waiting for a first-response for the
916  // main resource of the page. This controls whether the throbber state is
917  // "waiting" or "loading."
918  bool waiting_for_response_;
919
920  // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
921  // to a given tab and SiteInstance, and must be valid for the lifetime of the
922  // WebContentsImpl.
923  std::map<int32, int32> max_page_ids_;
924
925  // The current load state and the URL associated with it.
926  net::LoadStateWithParam load_state_;
927  base::string16 load_state_host_;
928  // Upload progress, for displaying in the status bar.
929  // Set to zero when there is no significant upload happening.
930  uint64 upload_size_;
931  uint64 upload_position_;
932
933  // Data for current page -----------------------------------------------------
934
935  // When a title cannot be taken from any entry, this title will be used.
936  base::string16 page_title_when_no_navigation_entry_;
937
938  // When a navigation occurs, we record its contents MIME type. It can be
939  // used to check whether we can do something for some special contents.
940  std::string contents_mime_type_;
941
942  // Character encoding.
943  std::string encoding_;
944
945  // True if this is a secure page which displayed insecure content.
946  bool displayed_insecure_content_;
947
948  // Data for misc internal state ----------------------------------------------
949
950  // When > 0, the WebContents is currently being captured (e.g., for
951  // screenshots or mirroring); and the underlying RenderWidgetHost should not
952  // be told it is hidden.
953  int capturer_count_;
954
955  // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
956  bool should_normally_be_visible_;
957
958  // See getter above.
959  bool is_being_destroyed_;
960
961  // Indicates whether we should notify about disconnection of this
962  // WebContentsImpl. This is used to ensure disconnection notifications only
963  // happen if a connection notification has happened and that they happen only
964  // once.
965  bool notify_disconnection_;
966
967  // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
968  // delegate of this WebContentsImpl is nulled before its destructor is called.
969  JavaScriptDialogManager* dialog_manager_;
970
971  // Set to true when there is an active "before unload" dialog.  When true,
972  // we've forced the throbber to start in Navigate, and we need to remember to
973  // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
974  bool is_showing_before_unload_dialog_;
975
976  // Settings that get passed to the renderer process.
977  RendererPreferences renderer_preferences_;
978
979  // The time that this WebContents was last made active. The initial value is
980  // the WebContents creation time.
981  base::TimeTicks last_active_time_;
982
983  // See description above setter.
984  bool closed_by_user_gesture_;
985
986  // Minimum/maximum zoom percent.
987  int minimum_zoom_percent_;
988  int maximum_zoom_percent_;
989  // If true, the default zoom limits have been overriden for this tab, in which
990  // case we don't want saved settings to apply to it and we don't want to
991  // remember it.
992  bool temporary_zoom_settings_;
993
994  // The raw accumulated zoom value and the actual zoom increments made for an
995  // an in-progress pinch gesture.
996  float totalPinchGestureAmount_;
997  int currentPinchZoomStepDelta_;
998
999  // The intrinsic size of the page.
1000  gfx::Size preferred_size_;
1001
1002  // The preferred size for content screen capture.  When |capturer_count_| > 0,
1003  // this overrides |preferred_size_|.
1004  gfx::Size preferred_size_for_capture_;
1005
1006#if defined(OS_ANDROID)
1007  // Date time chooser opened by this tab.
1008  // Only used in Android since all other platforms use a multi field UI.
1009  scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1010#endif
1011
1012  // Color chooser that was opened by this tab.
1013  scoped_ptr<ColorChooser> color_chooser_;
1014
1015  // A unique identifier for the current color chooser.  Identifiers are unique
1016  // across a renderer process.  This avoids race conditions in synchronizing
1017  // the browser and renderer processes.  For example, if a renderer closes one
1018  // chooser and opens another, and simultaneously the user picks a color in the
1019  // first chooser, the IDs can be used to drop the "chose a color" message
1020  // rather than erroneously tell the renderer that the user picked a color in
1021  // the second chooser.
1022  int color_chooser_identifier_;
1023
1024  // Manages the embedder state for browser plugins, if this WebContents is an
1025  // embedder; NULL otherwise.
1026  scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1027  // Manages the guest state for browser plugin, if this WebContents is a guest;
1028  // NULL otherwise.
1029  scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1030
1031  // This must be at the end, or else we might get notifications and use other
1032  // member variables that are gone.
1033  NotificationRegistrar registrar_;
1034
1035  // Used during IPC message dispatching from the RenderView/RenderFrame so that
1036  // the handlers can get a pointer to the RVH through which the message was
1037  // received.
1038  RenderViewHost* render_view_message_source_;
1039  RenderFrameHost* render_frame_message_source_;
1040
1041  // All live RenderWidgetHostImpls that are created by this object and may
1042  // outlive it.
1043  std::set<RenderWidgetHostImpl*> created_widgets_;
1044
1045  // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1046  int fullscreen_widget_routing_id_;
1047
1048  // Maps the ids of pending image downloads to their callbacks
1049  typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1050  ImageDownloadMap image_download_map_;
1051
1052  // Whether this WebContents is responsible for displaying a subframe in a
1053  // different process from its parent page.
1054  bool is_subframe_;
1055
1056  DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1057};
1058
1059}  // namespace content
1060
1061#endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
1062