Add AudioBufferStream.

media/filters/decrypting_audio_decoder.h

Index: media/filters/decrypting_audio_decoder.h
diff --git a/media/filters/decrypting_audio_decoder.h b/media/filters/decrypting_audio_decoder.h
index 5d9c4da243580620650c3a5083a8d6dcc64b1eef..50034ba010148270787dfd3650bfad1062c304ee 100644
--- a/media/filters/decrypting_audio_decoder.h
+++ b/media/filters/decrypting_audio_decoder.h
@@ -43,15 +43,16 @@ class MEDIA_EXPORT DecryptingAudioDecoder : public AudioDecoder {
   virtual ~DecryptingAudioDecoder();
 
   // AudioDecoder implementation.
-  virtual void Initialize(DemuxerStream* stream,
-                          const PipelineStatusCB& status_cb,
-                          const StatisticsCB& statistics_cb) OVERRIDE;
-  virtual void Read(const ReadCB& read_cb) OVERRIDE;
+  virtual void Initialize(const AudioDecoderConfig& config,
+                          const PipelineStatusCB& status_cb) OVERRIDE;
+  virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer,
+                      const DecodeCB& decode_cb) OVERRIDE;
   virtual void Reset(const base::Closure& closure) OVERRIDE;
   virtual void Stop(const base::Closure& closure) OVERRIDE;
   virtual int bits_per_channel() OVERRIDE;
   virtual ChannelLayout channel_layout() OVERRIDE;
   virtual int samples_per_second() OVERRIDE;
+  virtual bool HasQueuedData() const OVERRIDE;
 
  private:
   // For a detailed state diagram please see this link: http://goo.gl/8jAok
@@ -77,14 +78,6 @@ class MEDIA_EXPORT DecryptingAudioDecoder : public AudioDecoder {
   // Callback for Decryptor::InitializeAudioDecoder() during initialization.
   void FinishInitialization(bool success);
 
-  // Callback for Decryptor::InitializeAudioDecoder() during config change.
-  void FinishConfigChange(bool success);
-
-  // Reads from the demuxer stream with corresponding callback method.
-  void ReadFromDemuxerStream();
-  void DecryptAndDecodeBuffer(DemuxerStream::Status status,
-                              const scoped_refptr<DecoderBuffer>& buffer);
-
   void DecodePendingBuffer();
 
   // Callback for Decryptor::DecryptAndDecodeAudio().
@@ -115,12 +108,12 @@ class MEDIA_EXPORT DecryptingAudioDecoder : public AudioDecoder {
 
   PipelineStatusCB init_cb_;
   StatisticsCB statistics_cb_;
-  ReadCB read_cb_;
+  DecodeCB decode_cb_;
   base::Closure reset_cb_;
   base::Closure stop_cb_;
 
   // Pointer to the demuxer stream that will feed us compressed buffers.
-  DemuxerStream* demuxer_stream_;
+  AudioDecoderConfig config_;
 
   // Callback to request/cancel decryptor creation notification.
   SetDecryptorReadyCB set_decryptor_ready_cb_;