Move ExtensionHostMsg_PostMessage IPC handling from

chrome/browser/extensions/chrome_extension_web_contents_observer.h

 // Copyright 2014 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_EXTENSIONS_CHROME_EXTENSION_WEB_CONTENTS_OBSERVER_H_
 #define CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSION_WEB_CONTENTS_OBSERVER_H_
 
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "extensions/browser/extension_web_contents_observer.h"
 #include "extensions/common/stack_frame.h"
 
 namespace content {
 class RenderFrameHost;
 }
 
 namespace extensions {
-struct Message;
 
 // An ExtensionWebContentsObserver that adds support for the extension error
 // console, reloading crashed extensions and routing extension messages between
 // renderers.
 class ChromeExtensionWebContentsObserver
     : public ExtensionWebContentsObserver,
       public content::WebContentsUserData<ChromeExtensionWebContentsObserver> {
  private:
   friend class content::WebContentsUserData<ChromeExtensionWebContentsObserver>;
 
   explicit ChromeExtensionWebContentsObserver(
       content::WebContents* web_contents);
   virtual ~ChromeExtensionWebContentsObserver();
 
   // content::WebContentsObserver overrides.
   virtual void RenderViewCreated(content::RenderViewHost* render_view_host)
       OVERRIDE;
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual bool OnMessageReceived(
       const IPC::Message& message,
       content::RenderFrameHost* render_frame_host) OVERRIDE;
 
-  // Routes a message to the extensions MessageService.
-  void OnPostMessage(int port_id, const Message& message);
-
   // Adds a message to the extensions ErrorConsole.
   void OnDetailedConsoleMessageAdded(const base::string16& message,
                                      const base::string16& source,
                                      const StackTrace& stack_trace,
                                      int32 severity_level);
 
   // Reloads an extension if it is on the terminated list.
   void ReloadIfTerminated(content::RenderViewHost* render_view_host);
 
   DISALLOW_COPY_AND_ASSIGN(ChromeExtensionWebContentsObserver);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSION_WEB_CONTENTS_OBSERVER_H_