Move extension messages to their own file and add a RenderViewObserver to start moving the extens...

chrome/browser/notifications/balloon_host.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 CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_
 #define CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 42 matching lines @@
   virtual void RenderViewCreated(RenderViewHost* render_view_host);
   virtual void RenderViewReady(RenderViewHost* render_view_host);
   virtual void RenderViewGone(RenderViewHost* render_view_host,
                               base::TerminationStatus status,
                               int error_code);
   virtual void UpdateTitle(RenderViewHost* render_view_host,
                            int32 page_id, const std::wstring& title) {}
   virtual int GetBrowserWindowID() const;
   virtual ViewType::Type GetRenderViewType() const;
   virtual RenderViewHostDelegate::View* GetViewDelegate();
-  virtual void ProcessWebUIMessage(const ViewHostMsg_DomMessage_Params& params);
+  virtual void ProcessWebUIMessage(
+      const ExtensionHostMsg_DomMessage_Params& params);
 
   // NotificationObserver override.
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
 
   // RenderViewHostDelegate::View methods. Only the ones for opening new
   // windows are currently implemented.
   virtual void CreateNewWindow(
@@ skipping 80 matching lines @@
   // rendering a page from an extension.
   scoped_ptr<ExtensionFunctionDispatcher> extension_function_dispatcher_;
 
   // A flag to enable Web UI.
   bool enable_web_ui_;
 
   NotificationRegistrar registrar_;
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_