Update FFmpegAudioDecoder to support multi-frame packets.

media/filters/ffmpeg_audio_decoder.h

Index: media/filters/ffmpeg_audio_decoder.h
diff --git a/media/filters/ffmpeg_audio_decoder.h b/media/filters/ffmpeg_audio_decoder.h
index 8e67f59c72c2dff6aec55b82d50f68f6d6517110..58e0d7b9c2dd18857424f26ad17d45946fc10963 100644
--- a/media/filters/ffmpeg_audio_decoder.h
+++ b/media/filters/ffmpeg_audio_decoder.h
@@ -22,6 +22,7 @@ namespace media {
 
 class DataBuffer;
 class DecoderBuffer;
+struct QueuedAudioBuffer;
 
 class MEDIA_EXPORT FFmpegAudioDecoder : public AudioDecoder {
  public:
@@ -92,6 +93,10 @@ class MEDIA_EXPORT FFmpegAudioDecoder : public AudioDecoder {
 
   ReadCB read_cb_;
 
+  // Since multiple frames may be decoded from the same packet we need to queue
+  // them up and hand them out as we receive Read() calls.
+  std::list<QueuedAudioBuffer> queued_audio_;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(FFmpegAudioDecoder);
 };