Getting rid of AudioHardwareConfig and its synchronous IPC.

media/blink/webmediaplayer_impl.h

 // Copyright 2013 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_BLINK_WEBMEDIAPLAYER_IMPL_H_
 #define MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 49 matching lines @@
 class WebLayerImpl;
 }
 
 namespace gpu {
 namespace gles2 {
 class GLES2Interface;
 }
 }
 
 namespace media {
-class AudioHardwareConfig;
 class ChunkDemuxer;
 class GpuVideoAcceleratorFactories;
 class MediaLog;
 class UrlIndex;
 class VideoFrameCompositor;
 class WebAudioSourceProviderImpl;
 class WebMediaPlayerDelegate;
 class WebTextTrackImpl;
 
 // The canonical implementation of blink::WebMediaPlayer that's backed by
@@ skipping 448 matching lines @@
   // Called some-time after OnHidden() if the media was suspended in a playing
   // state as part of the call to OnHidden().
   base::OneShotTimer background_pause_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_