Add DecryptingAudioDecoder.

media/base/decryptor.h

Index: media/base/decryptor.h
diff --git a/media/base/decryptor.h b/media/base/decryptor.h
index 2793be42a43646f35313b84327dab4dfd9c73414..6051c634a4731cd0da246ba90be01ff50d6e967a 100644
--- a/media/base/decryptor.h
+++ b/media/base/decryptor.h
@@ -131,11 +131,7 @@ class MEDIA_EXPORT Decryptor {
                                       const KeyAddedCB& key_added_cb) = 0;
 
   // Helper structure for managing multiple decoded audio buffers per input.
-  struct QueuedAudioBuffer {
-    AudioDecoder::Status status;
-    scoped_refptr<Buffer> buffer;
-  };
-  typedef std::list<QueuedAudioBuffer> AudioBuffers;
+  typedef std::list<scoped_refptr<Buffer> > AudioBuffers;

[xhwang, 2012/10/18 02:14:10]

This cl is based on 11144036, so the changes in this file are really from that
CL. Comments are not accurate here and please ignore.

 
   // Indicates completion of audio/video decrypt-and-decode operation.
   //
@@ -153,8 +149,7 @@ class MEDIA_EXPORT Decryptor {
   // - Set to kError if unexpected error has occurred. In this case the
   //   second parameter must be NULL.
   // Second parameter: The decoded video frame or audio buffers.
-  typedef base::Callback<void(Status,
-                              const scoped_ptr<AudioBuffers>&)> AudioDecodeCB;
+  typedef base::Callback<void(Status, const AudioBuffers&)> AudioDecodeCB;
   typedef base::Callback<void(Status,
                               const scoped_refptr<VideoFrame>&)> VideoDecodeCB;