Add support for midstream audio configuration changes.

media/base/audio_decoder.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_BASE_AUDIO_DECODER_H_
 #define MEDIA_BASE_AUDIO_DECODER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "media/base/audio_decoder_config.h"
@@ skipping 51 matching lines @@
   // Resets decoder state, dropping any queued encoded data.
   virtual void Reset(const base::Closure& closure) = 0;
 
   // Stops decoder, fires any pending callbacks and sets the decoder to an
   // uninitialized state. An AudioDecoder cannot be re-initialized after it has
   // been stopped.
   // Note that if Initialize() has been called, Stop() must be called and
   // complete before deleting the decoder.
   virtual void Stop(const base::Closure& closure) = 0;
 
-  // Returns various information about the decoded audio format.
-  virtual int bits_per_channel() = 0;
-  virtual ChannelLayout channel_layout() = 0;
-  virtual int samples_per_second() = 0;
-
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_DECODER_H_