Add support for external video renderers in mojo.

media/mojo/interfaces/demuxer_stream.mojom

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 module mojo;
 
 import "media/mojo/interfaces/media_types.mojom";
 
 // DemuxerStream is modeled after media::DemuxerStream using mojo in order to
 // enable proxying between a media::Pipeline and media::Renderer living in two
 // different applications.
 [Client=DemuxerStreamClient]
 interface DemuxerStream {
   // See media::DemuxerStream for descriptions.
   enum Type {
     UNKNOWN,
     AUDIO,
-    LAST_TYPE = AUDIO
+    VIDEO,
+    LAST_TYPE = VIDEO,
   };
 
   // See media::DemuxerStream for descriptions.
   enum Status {
     OK = 0,
     ABORTED,
     CONFIG_CHANGED,
   };
 
   // Request a MediaDecoderBuffer from this stream for decoding and rendering.
@@ skipping 13 matching lines @@
   //     [ |DemuxerStream::Status| |MediaDecoderBuffer| ]
   //
   // payloads from the DataPipe directly.  If |pipe| is NULL, it means the
   // client needs to use DemuxerStream::Read() directly to obtain buffers.
   OnStreamReady(handle<data_pipe_consumer>? pipe);
 
   // A new AudioDecoderConfig is available. Will be sent by the DemuxerStream
   // whenever a DemuxerStream::STATUS_CONFIG_CHANGED is observed (either
   // in a Read() callback or over the DataPipe).
   OnAudioDecoderConfigChanged(AudioDecoderConfig config);
+
+  // A new VideoDecoderConfig is available. Will be sent by the DemuxerStream
+  // whenever a DemuxerStream::STATUS_CONFIG_CHANGED is observed (either
+  // in a Read() callback or over the DataPipe).
+  OnVideoDecoderConfigChanged(VideoDecoderConfig config);
 };