Move media/audio files into media namespace

media/audio/audio_buffers_state.h

 // Copyright (c) 2012 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_BUFFERS_STATE_H_
 #define MEDIA_AUDIO_AUDIO_BUFFERS_STATE_H_
 
 #include "media/base/media_export.h"
 
+namespace media {
+
 // AudioBuffersState struct stores current state of audio buffers.
 // It is used for audio synchronization.
 struct MEDIA_EXPORT AudioBuffersState {
   AudioBuffersState();
   AudioBuffersState(int pending_bytes, int hardware_delay_bytes);
 
   int total_bytes() {
     return pending_bytes + hardware_delay_bytes;
   }
 
   // Number of bytes we currently have in our software buffer.
   int pending_bytes;
 
   // Number of bytes that have been written to the device, but haven't
   // been played yet.
   int hardware_delay_bytes;
 };
 
+}  // namespace media
+
 #endif  // MEDIA_AUDIO_AUDIO_BUFFERS_STATE_H_