Plumb DemuxerStream::EnableBitstreamConverter through mojo pipeline.

media/mojo/interfaces/demuxer_stream.mojom

Index: media/mojo/interfaces/demuxer_stream.mojom
diff --git a/media/mojo/interfaces/demuxer_stream.mojom b/media/mojo/interfaces/demuxer_stream.mojom
index 5b880b747c4b3d43a60ff45aa4125c870a58598b..b985878d3b69e4cc5586895999633e1bd9eb737d 100644
--- a/media/mojo/interfaces/demuxer_stream.mojom
+++ b/media/mojo/interfaces/demuxer_stream.mojom
@@ -53,4 +53,6 @@ interface DemuxerStream {
              DecoderBuffer? buffer,
              AudioDecoderConfig? audio_config,
              VideoDecoderConfig? video_config);
+
+  EnableBitstreamConverter();

[xhwang, 2016/03/08 01:36:46]

Could you please add a comment.

[alokp, 2016/03/08 05:22:42]

I wanted to copy the comment from media::DemuxerStream, but did not find any
comment there. Can you suggest an appropriate comment? I am not too sure what
this function is supposed to do in generic terms.

[xhwang, 2016/03/08 06:34:27]

Fair enough :) How about:

Enables converting bitstream to a format that is expected by the decoder. For
example, H.264 bitstream based packets into H.264 Annex B bytestream format.

 };