Replace AudioDecoderConfig with simple accessors on AudioDecoder.

media/filters/audio_renderer_impl.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_AUDIO_RENDERER_IMPL_H_
 #define MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_
 
 // This is the default implementation of AudioRenderer, which uses the audio
 // interfaces to open an audio device.  Although it cannot be used in the
 // sandbox, it serves as a reference implementation and can be used in other
@@ skipping 27 matching lines @@
   virtual void SetVolume(float volume);
 
   // AudioSourceCallback implementation.
   virtual uint32 OnMoreData(AudioOutputStream* stream, uint8* dest,
                             uint32 len, AudioBuffersState buffers_state);
   virtual void OnClose(AudioOutputStream* stream);
   virtual void OnError(AudioOutputStream* stream, int code);
 
  protected:
   // AudioRendererBase implementation.
-  virtual bool OnInitialize(const AudioDecoderConfig& config);
+  virtual bool OnInitialize(int bits_per_channel,
+                            ChannelLayout channel_layout,
+                            int sample_rate);
   virtual void OnStop();
 
  private:
   // Audio output stream device.
   AudioOutputStream* stream_;
   int bytes_per_second_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_