Add OVERRIDE to chrome/renderer.

chrome/renderer/extensions/extension_dispatcher.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_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_
 #define CHROME_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 70 matching lines @@
   }
 
   // If the extension is in fact idle, tell the browser process to close
   // the background page.
   void CheckIdleStatus(const std::string& extension_id);
 
  private:
   friend class RenderViewTest;
 
   // RenderProcessObserver implementation:
-  virtual bool OnControlMessageReceived(const IPC::Message& message);
-  virtual void WebKitInitialized();
-  virtual void IdleNotification();
+  virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual void WebKitInitialized() OVERRIDE;
+  virtual void IdleNotification() OVERRIDE;
 
   void OnMessageInvoke(const std::string& extension_id,
                        const std::string& function_name,
                        const base::ListValue& args,
                        const GURL& event_url);
   void OnDeliverMessage(int target_port_id, const std::string& message);
   void OnSetFunctionNames(const std::vector<std::string>& names);
   void OnLoaded(
       const std::vector<ExtensionMsg_Loaded_Params>& loaded_extensions);
   void OnUnloaded(const std::string& id);
@@ skipping 65 matching lines @@
   // Status of webrequest usage for known extensions.
   // TODO(mpcomplete): remove. http://crbug.com/100411
   bool webrequest_adblock_;
   bool webrequest_adblock_plus_;
   bool webrequest_other_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDispatcher);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_