Have ExtensionHost use TabContents instead of RenderViewHost. Try #2. The first

content/browser/tab_contents/tab_contents.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 85 matching lines @@
   // Gets the controller for this tab contents.
   NavigationController& controller() { return controller_; }
   const NavigationController& controller() const { return controller_; }
 
   // Returns the user browser context associated with this TabContents (via the
   // NavigationController).
   content::BrowserContext* browser_context() const {
     return controller_.browser_context();
   }
 
+  void set_view_type(content::ViewType view_type) { view_type_ = view_type; }
+
   // Returns the SavePackage which manages the page saving job. May be NULL.
   SavePackage* save_package() const { return save_package_.get(); }
 
   // Return the currently active RenderProcessHost and RenderViewHost. Each of
   // these may change over time.
   RenderProcessHost* GetRenderProcessHost() const;
   RenderViewHost* render_view_host() const {
     return render_manager_.current_host();
   }
 
@@ skipping 341 matching lines @@
 
   // Returns the WebUI for the current state of the tab. This will either be
   // the pending WebUI, the committed WebUI, or NULL.
   WebUI* GetWebUIForCurrentState();
 
   // Called when the reponse to a pending mouse lock request has arrived.
   // Returns true if |allowed| is true and the mouse has been successfully
   // locked.
   bool GotResponseToLockMouseRequest(bool allowed);
 
+  // RenderViewHostDelegate ----------------------------------------------------
+
+  virtual RenderViewHostDelegate::View* GetViewDelegate() OVERRIDE;
+  virtual RenderViewHostDelegate::RendererManagement*
+      GetRendererManagementDelegate() OVERRIDE;
+  virtual TabContents* GetAsTabContents() OVERRIDE;
+  virtual content::ViewType GetRenderViewType() const OVERRIDE;
+  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void RenderViewGone(RenderViewHost* render_view_host,
+                              base::TerminationStatus status,
+                              int error_code) OVERRIDE;
+  virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void DidNavigate(
+      RenderViewHost* render_view_host,
+      const ViewHostMsg_FrameNavigate_Params& params) OVERRIDE;
+  virtual void UpdateState(RenderViewHost* render_view_host,
+                           int32 page_id,
+                           const std::string& state) OVERRIDE;
+  virtual void UpdateTitle(RenderViewHost* render_view_host,
+                           int32 page_id,
+                           const string16& title,
+                           base::i18n::TextDirection title_direction) OVERRIDE;
+  virtual void UpdateEncoding(RenderViewHost* render_view_host,
+                              const std::string& encoding) OVERRIDE;
+  virtual void UpdateTargetURL(int32 page_id, const GURL& url) OVERRIDE;
+  virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
+  virtual void DidStartLoading() OVERRIDE;
+  virtual void DidStopLoading() OVERRIDE;
+  virtual void DidCancelLoading() OVERRIDE;
+  virtual void DidChangeLoadProgress(double progress) OVERRIDE;
+  virtual void DocumentAvailableInMainFrame(
+      RenderViewHost* render_view_host) OVERRIDE;
+  virtual void DocumentOnLoadCompletedInMainFrame(
+      RenderViewHost* render_view_host,
+      int32 page_id) OVERRIDE;
+  virtual void RequestOpenURL(const GURL& url,
+                              const GURL& referrer,
+                              WindowOpenDisposition disposition,
+                              int64 source_frame_id) OVERRIDE;
+  virtual void RunJavaScriptMessage(const RenderViewHost* rvh,
+                                    const string16& message,
+                                    const string16& default_prompt,
+                                    const GURL& frame_url,
+                                    const int flags,
+                                    IPC::Message* reply_msg,
+                                    bool* did_suppress_message) OVERRIDE;
+  virtual void RunBeforeUnloadConfirm(const RenderViewHost* rvh,
+                                      const string16& message,
+                                      IPC::Message* reply_msg) OVERRIDE;
+  virtual content::RendererPreferences GetRendererPrefs(
+      content::BrowserContext* browser_context) const OVERRIDE;
+  virtual WebPreferences GetWebkitPrefs() OVERRIDE;
+  virtual void OnUserGesture() OVERRIDE;
+  virtual void OnIgnoredUIEvent() OVERRIDE;
+  virtual void RendererUnresponsive(RenderViewHost* render_view_host,
+                                    bool is_during_unload) OVERRIDE;
+  virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
+  virtual void LoadStateChanged(const GURL& url,
+                                const net::LoadStateWithParam& load_state,
+                                uint64 upload_position,
+                                uint64 upload_size) OVERRIDE;
+  virtual void WorkerCrashed() OVERRIDE;
+  virtual void Activate() OVERRIDE;
+  virtual void Deactivate() OVERRIDE;
+  virtual void LostCapture() OVERRIDE;
+  virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
+                                      bool* is_keyboard_shortcut) OVERRIDE;
+  virtual void HandleKeyboardEvent(
+      const NativeWebKeyboardEvent& event) OVERRIDE;
+  virtual void HandleMouseUp() OVERRIDE;
+  virtual void HandleMouseActivate() OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message);
+  virtual void RunFileChooser(RenderViewHost* render_view_host,
+                              const ViewHostMsg_RunFileChooser_Params& params);
+  virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
+  virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
+  virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
+  virtual void RequestToLockMouse() OVERRIDE;
+  virtual void LostMouseLock() OVERRIDE;
+
  protected:
   friend class TabContentsObserver;
 
   // Add and remove observers for page navigation notifications. Adding or
   // removing multiple times has no effect. The order in which notifications
   // are sent to observers is undefined. Clients must be sure to remove the
   // observer before they go away.
   void AddObserver(TabContentsObserver* observer);
   void RemoveObserver(TabContentsObserver* observer);
 
@@ skipping 125 matching lines @@
                                         int merge_history_length,
                                         int32 minimum_page_id);
 
   // Misc non-view stuff -------------------------------------------------------
 
   // Helper functions for sending notifications.
   void NotifySwapped();
   void NotifyConnected();
   void NotifyDisconnected();
 
-  // RenderViewHostDelegate ----------------------------------------------------
-
-  // RenderViewHostDelegate implementation.
-  virtual RenderViewHostDelegate::View* GetViewDelegate() OVERRIDE;
-  virtual RenderViewHostDelegate::RendererManagement*
-      GetRendererManagementDelegate() OVERRIDE;
-  virtual TabContents* GetAsTabContents() OVERRIDE;
-  virtual content::ViewType GetRenderViewType() const OVERRIDE;
-  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
-  virtual void RenderViewReady(RenderViewHost* render_view_host) OVERRIDE;
-  virtual void RenderViewGone(RenderViewHost* render_view_host,
-                              base::TerminationStatus status,
-                              int error_code) OVERRIDE;
-  virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
-  virtual void DidNavigate(
-      RenderViewHost* render_view_host,
-      const ViewHostMsg_FrameNavigate_Params& params) OVERRIDE;
-  virtual void UpdateState(RenderViewHost* render_view_host,
-                           int32 page_id,
-                           const std::string& state) OVERRIDE;
-  virtual void UpdateTitle(RenderViewHost* render_view_host,
-                           int32 page_id,
-                           const string16& title,
-                           base::i18n::TextDirection title_direction) OVERRIDE;
-  virtual void UpdateEncoding(RenderViewHost* render_view_host,
-                              const std::string& encoding) OVERRIDE;
-  virtual void UpdateTargetURL(int32 page_id, const GURL& url) OVERRIDE;
-  virtual void Close(RenderViewHost* render_view_host) OVERRIDE;
-  virtual void RequestMove(const gfx::Rect& new_bounds) OVERRIDE;
-  virtual void DidStartLoading() OVERRIDE;
-  virtual void DidStopLoading() OVERRIDE;
-  virtual void DidCancelLoading() OVERRIDE;
-  virtual void DidChangeLoadProgress(double progress) OVERRIDE;
-  virtual void DocumentOnLoadCompletedInMainFrame(
-      RenderViewHost* render_view_host,
-      int32 page_id) OVERRIDE;
-  virtual void RequestOpenURL(const GURL& url,
-                              const GURL& referrer,
-                              WindowOpenDisposition disposition,
-                              int64 source_frame_id) OVERRIDE;
-  virtual void RunJavaScriptMessage(const RenderViewHost* rvh,
-                                    const string16& message,
-                                    const string16& default_prompt,
-                                    const GURL& frame_url,
-                                    const int flags,
-                                    IPC::Message* reply_msg,
-                                    bool* did_suppress_message) OVERRIDE;
-  virtual void RunBeforeUnloadConfirm(const RenderViewHost* rvh,
-                                      const string16& message,
-                                      IPC::Message* reply_msg) OVERRIDE;
-  virtual content::RendererPreferences GetRendererPrefs(
-      content::BrowserContext* browser_context) const OVERRIDE;
-  virtual WebPreferences GetWebkitPrefs() OVERRIDE;
-  virtual void OnUserGesture() OVERRIDE;
-  virtual void OnIgnoredUIEvent() OVERRIDE;
-  virtual void RendererUnresponsive(RenderViewHost* render_view_host,
-                                    bool is_during_unload) OVERRIDE;
-  virtual void RendererResponsive(RenderViewHost* render_view_host) OVERRIDE;
-  virtual void LoadStateChanged(const GURL& url,
-                                const net::LoadStateWithParam& load_state,
-                                uint64 upload_position,
-                                uint64 upload_size) OVERRIDE;
-  virtual void WorkerCrashed() OVERRIDE;
-  virtual void Activate() OVERRIDE;
-  virtual void Deactivate() OVERRIDE;
-  virtual void LostCapture() OVERRIDE;
-  virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
-                                      bool* is_keyboard_shortcut) OVERRIDE;
-  virtual void HandleKeyboardEvent(
-      const NativeWebKeyboardEvent& event) OVERRIDE;
-  virtual void HandleMouseUp() OVERRIDE;
-  virtual void HandleMouseActivate() OVERRIDE;
-  virtual bool OnMessageReceived(const IPC::Message& message);
-  virtual void RunFileChooser(RenderViewHost* render_view_host,
-                              const ViewHostMsg_RunFileChooser_Params& params);
-  virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
-  virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
-  virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
-  virtual void RequestToLockMouse() OVERRIDE;
-  virtual void LostMouseLock() OVERRIDE;
-
   // RenderViewHostManager::Delegate -------------------------------------------
 
   virtual void BeforeUnloadFiredFromRenderManager(
       bool proceed,
       bool* proceed_to_fire_unload);
   virtual void DidStartLoadingFromRenderManager(
       RenderViewHost* render_view_host);
   virtual void RenderViewGoneFromRenderManager(
       RenderViewHost* render_view_host);
   virtual void UpdateRenderViewSizeForRenderManager();
@@ skipping 142 matching lines @@
   // remember it.
   bool temporary_zoom_settings_;
 
   // A list of observers notified when page state changes. Weak references.
   ObserverList<TabContentsObserver> observers_;
 
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
+  // Our view type. Default is VIEW_TYPE_TAB_CONTENTS.
+  content::ViewType view_type_;
+
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_