Add OVERRIDE to media/.

media/filters/reference_audio_renderer.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_FILTERS_REFERENCE_AUDIO_RENDERER_H_
 #define MEDIA_FILTERS_REFERENCE_AUDIO_RENDERER_H_
 
 // This is the reference implementation of AudioRenderer, which uses the audio
 // interfaces to open an audio device.  It cannot be used in the sandbox, but is
 // used in other applications such as the test player.
@@ skipping 13 matching lines @@
 namespace media {
 
 class MEDIA_EXPORT ReferenceAudioRenderer
     : public AudioRendererBase,
       public AudioOutputStream::AudioSourceCallback {
  public:
   ReferenceAudioRenderer();
   virtual ~ReferenceAudioRenderer();
 
   // Filter implementation.
-  virtual void SetPlaybackRate(float playback_rate);
+  virtual void SetPlaybackRate(float playback_rate) OVERRIDE;
 
   // AudioRenderer implementation.
-  virtual void SetVolume(float volume);
+  virtual void SetVolume(float volume) OVERRIDE;
 
   // AudioSourceCallback implementation.
   virtual uint32 OnMoreData(AudioOutputStream* stream, uint8* dest,
-                            uint32 len, AudioBuffersState buffers_state);
+                            uint32 len,
+                            AudioBuffersState buffers_state) OVERRIDE;
   virtual void OnClose(AudioOutputStream* stream);
-  virtual void OnError(AudioOutputStream* stream, int code);
+  virtual void OnError(AudioOutputStream* stream, int code) OVERRIDE;
 
  protected:
   // AudioRendererBase implementation.
   virtual bool OnInitialize(int bits_per_channel,
                             ChannelLayout channel_layout,
-                            int sample_rate);
-  virtual void OnStop();
+                            int sample_rate) OVERRIDE;
+  virtual void OnStop() OVERRIDE;
 
  private:
   // Audio output stream device.
   AudioOutputStream* stream_;
   int bytes_per_second_;
 
   DISALLOW_COPY_AND_ASSIGN(ReferenceAudioRenderer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_REFERENCE_AUDIO_RENDERER_H_