Add OVERRIDE to media/.

media/audio/audio_output_proxy.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 MEDIA_AUDIO_AUDIO_OUTPUT_STREAM_PROXY_H_
 #define MEDIA_AUDIO_AUDIO_OUTPUT_STREAM_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/task.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
 
 class AudioOutputDispatcher;
 
 // AudioOutputProxy is an audio otput stream that uses resources more
 // efficiently than a regular audio output stream: it opens audio
 // device only when sound is playing, i.e. between Start() and Stop()
 // (there is still one physical stream per each audio output proxy in
 // playing state).
 //
 // AudioOutputProxy uses AudioOutputDispatcher to open and close
 // physical output streams.
 class MEDIA_EXPORT AudioOutputProxy : public AudioOutputStream {
  public:
   // Caller keeps ownership of |dispatcher|.
   AudioOutputProxy(AudioOutputDispatcher* dispatcher);
 
   // AudioOutputStream interface.
-  virtual bool Open();
-  virtual void Start(AudioSourceCallback* callback);
-  virtual void Stop();
-  virtual void SetVolume(double volume);
-  virtual void GetVolume(double* volume);
-  virtual void Close();
+  virtual bool Open() OVERRIDE;
+  virtual void Start(AudioSourceCallback* callback) OVERRIDE;
+  virtual void Stop() OVERRIDE;
+  virtual void SetVolume(double volume) OVERRIDE;
+  virtual void GetVolume(double* volume) OVERRIDE;
+  virtual void Close() OVERRIDE;
 
  private:
   // Needs to access destructor.
   friend class DeleteTask<AudioOutputProxy>;
 
   enum State {
     kCreated,
     kOpened,
     kPlaying,
     kClosed,
@@ skipping 10 matching lines @@
   AudioOutputStream* physical_stream_;
 
   // Need to save volume here, so that we can restore it in case the stream
   // is stopped, and then started again.
   double volume_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioOutputProxy);
 };
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_STREAM_PROXY_H_