Add OVERRIDE to content/.

content/renderer/speech_input_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 CONTENT_RENDERER_SPEECH_INPUT_DISPATCHER_H_
 #define CONTENT_RENDERER_SPEECH_INPUT_DISPATCHER_H_
 
 #include "base/basictypes.h"
 #include "content/common/speech_input_result.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSpeechInputController.h"
 
 class RenderViewImpl;
 
 namespace WebKit {
 class WebSpeechInputListener;
 }
 
 // SpeechInputDispatcher is a delegate for speech input messages used by WebKit.
 // It's the complement of SpeechInputDispatcherHost (owned by RenderViewHost).
 class SpeechInputDispatcher : public content::RenderViewObserver,
                               public WebKit::WebSpeechInputController {
  public:
   SpeechInputDispatcher(RenderViewImpl* render_view,
                         WebKit::WebSpeechInputListener* listener);
 
  private:
   // RenderView::Observer implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message);
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // WebKit::WebSpeechInputController.
   virtual bool startRecognition(int request_id,
                                 const WebKit::WebRect& element_rect,
                                 const WebKit::WebString& language,
                                 const WebKit::WebString& grammar,
                                 const WebKit::WebSecurityOrigin& origin);
 
   virtual void cancelRecognition(int request_id);
   virtual void stopRecording(int request_id);
 
   void OnSpeechRecognitionResult(int request_id,
       const speech_input::SpeechInputResult& result);
   void OnSpeechRecordingComplete(int request_id);
   void OnSpeechRecognitionComplete(int request_id);
   void OnSpeechRecognitionToggleSpeechInput();
 
   WebKit::WebSpeechInputListener* listener_;
 
   DISALLOW_COPY_AND_ASSIGN(SpeechInputDispatcher);
 };
 
 #endif  // CHROME_RENDERER_SPEECH_INPUT_DISPATCHER_H_