Pass RenderFrameHost to WebContentObservers' message handlers

chrome/browser/guest_view/web_view/plugin_permission_helper.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_GUEST_VIEW_WEB_VIEW_PLUGIN_PERMISSION_HELPER_H_
 #define CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_PLUGIN_PERMISSION_HELPER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
 class PluginPermissionHelper
     : public content::WebContentsUserData<PluginPermissionHelper>,
       public content::WebContentsObserver {
  public:
   virtual ~PluginPermissionHelper();
 
  private:
   explicit PluginPermissionHelper(content::WebContents* web_contents);
   friend class content::WebContentsUserData<PluginPermissionHelper>;
 
   // content::WebContentsObserver implementation.
+  virtual bool OnMessageReceived(
+      const IPC::Message& message,
+      content::RenderFrameHost* render_frame_host) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // Message handlers:
   void OnBlockedUnauthorizedPlugin(const base::string16& name,
                                    const std::string& identifier);
   void OnCouldNotLoadPlugin(const base::FilePath& plugin_path);
   void OnBlockedOutdatedPlugin(int placeholder_id,
                                const std::string& identifier);
   void OnNPAPINotSupported(const std::string& identifier);
   void OnOpenAboutPlugins();
 #if defined(ENABLE_PLUGIN_INSTALLATION)
   void OnFindMissingPlugin(int placeholder_id, const std::string& mime_type);
 
   void OnRemovePluginPlaceholderHost(int placeholder_id);
 #endif
 
   void OnPermissionResponse(const std::string& identifier,
                             bool allow,
                             const std::string& user_input);
 
   base::WeakPtrFactory<PluginPermissionHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginPermissionHelper);
 };
 
 #endif  // CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_PLUGIN_PERMISSION_HELPER_H_