Add callback in VideoDecoder and AudioDecoder to return decoded frames.

media/filters/decoder_stream.h

Index: media/filters/decoder_stream.h
diff --git a/media/filters/decoder_stream.h b/media/filters/decoder_stream.h
index 2856f8536e2cf7f931819f4f09a1fc2841ce5c9d..d180f27fc53deae4ced2fbee4a6ef582badc44d6 100644
--- a/media/filters/decoder_stream.h
+++ b/media/filters/decoder_stream.h
@@ -141,9 +141,10 @@ class MEDIA_EXPORT DecoderStream {
   void FlushDecoder();
 
   // Callback for Decoder::Decode().
-  void OnDecodeOutputReady(int buffer_size,
-                           DecoderStatus status,
-                           const scoped_refptr<Output>& output);
+  void OnDecodeDone(int buffer_size, bool end_of_stream, DecoderStatus status);
+
+  // Output callback passed to Decoder::Initialize().
+  void OnDecodeOutputReady(const scoped_refptr<Output>& output);
 
   // Reads a buffer from |stream_| and returns the result via OnBufferReady().
   void ReadFromDemuxerStream();