Revert 290359 "Remove AudioBuffersState class."

trunk/src/content/browser/renderer_host/media/audio_sync_reader.cc

 // 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.
 
 #include "content/browser/renderer_host/media/audio_sync_reader.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/histogram.h"
 #include "content/public/common/content_switches.h"
+#include "media/audio/audio_buffers_state.h"
 #include "media/audio/audio_parameters.h"
 
 using media::AudioBus;
 
 namespace content {
 
 AudioSyncReader::AudioSyncReader(base::SharedMemory* shared_memory,
                                  const media::AudioParameters& params)
     : shared_memory_(shared_memory),
       mute_audio_(CommandLine::ForCurrentProcess()->HasSwitch(
@@ skipping 123 matching lines @@
                                base::TimeDelta::FromMilliseconds(1),
                                base::TimeDelta::FromMilliseconds(1000),
                                50);
     return false;
   }
 
   return true;
 }
 
 }  // namespace content