Add VideoTrackSink interface to content/public

content/renderer/media/media_stream_dependency_factory.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/media/media_stream_dependency_factory.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "content/public/common/content_switches.h"
 #include "content/renderer/media/media_stream_source_extra_data.h"
 #include "content/renderer/media/media_stream_track_extra_data.h"
 #include "content/renderer/media/peer_connection_identity_service.h"
 #include "content/renderer/media/rtc_media_constraints.h"
 #include "content/renderer/media/rtc_peer_connection_handler.h"
 #include "content/renderer/media/rtc_video_capturer.h"
 #include "content/renderer/media/rtc_video_decoder_factory.h"
 #include "content/renderer/media/rtc_video_encoder_factory.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
+#include "content/renderer/media/video_track.h"
 #include "content/renderer/media/webaudio_capturer_source.h"
 #include "content/renderer/media/webrtc_audio_device_impl.h"
 #include "content/renderer/media/webrtc_local_audio_track.h"
 #include "content/renderer/media/webrtc_uma_histograms.h"
 #include "content/renderer/p2p/ipc_network_manager.h"
 #include "content/renderer/p2p/ipc_socket_factory.h"
 #include "content/renderer/p2p/port_allocator.h"
 #include "content/renderer/render_thread_impl.h"
 #include "jingle/glue/thread_wrapper.h"
 #include "media/filters/gpu_video_accelerator_factories.h"
@@ skipping 825 matching lines @@
     GetWebRtcAudioDevice()->AddAudioCapturer(capturer);
 
   return capturer;
 }
 
 void MediaStreamDependencyFactory::AddNativeTrackToBlinkTrack(
     webrtc::MediaStreamTrackInterface* native_track,
     const blink::WebMediaStreamTrack& webkit_track) {
   DCHECK(!webkit_track.isNull() && !webkit_track.extraData());
   blink::WebMediaStreamTrack track = webkit_track;
-  track.setExtraData(new MediaStreamTrackExtraData(native_track));
+
+  if (track.source().type() == blink::WebMediaStreamSource::TypeVideo) {
+    // TODO(perkj): Is it better  to have multiple implementations of
+    // AddNativeTrackToBlinkTrack with different types of |native_track|?
+    DCHECK(native_track->kind() == "video");
+    track.setExtraData(new VideoTrack(
+        static_cast<webrtc::VideoTrackInterface*> (native_track)));
+  } else {
+    track.setExtraData(new MediaStreamTrackExtraData(native_track));
+  }
 }
 
 webrtc::MediaStreamInterface*
 MediaStreamDependencyFactory::GetNativeMediaStream(
     const blink::WebMediaStream& stream) {
   if (stream.isNull())
     return NULL;
   MediaStreamExtraData* extra_data =
       static_cast<MediaStreamExtraData*>(stream.extraData());
   return extra_data ? extra_data->stream().get() : NULL;
 }
 
 webrtc::MediaStreamTrackInterface*
 MediaStreamDependencyFactory::GetNativeMediaStreamTrack(
       const blink::WebMediaStreamTrack& track) {
   if (track.isNull())
     return NULL;
   MediaStreamTrackExtraData* extra_data =
       static_cast<MediaStreamTrackExtraData*>(track.extraData());
   return extra_data ? extra_data->track().get() : NULL;
 }
 
 }  // namespace content