Make WebRtcVideoChannel2::WebRtcVideoSendStream implement rtc::VideoRendererInterface.

talk/media/base/mediachannel.h

Index: talk/media/base/mediachannel.h
diff --git a/talk/media/base/mediachannel.h b/talk/media/base/mediachannel.h
index f6fb77d8a6db018a886b0268920c175623a4b82c..50d2fcafda05393956d7c94e1d8ebed3f96957f0 100644
--- a/talk/media/base/mediachannel.h
+++ b/talk/media/base/mediachannel.h
@@ -42,6 +42,7 @@
 #include "webrtc/base/sigslot.h"
 #include "webrtc/base/socket.h"
 #include "webrtc/base/window.h"
+#include "webrtc/media/base/videosinkinterface.h"
 // TODO(juberti): re-evaluate this include
 #include "talk/session/media/audiomonitor.h"
 
@@ -60,6 +61,7 @@ namespace cricket {
 class AudioRenderer;
 class ScreencastId;
 class VideoCapturer;
+class VideoFrame;
 class VideoRenderer;
 struct RtpHeader;
 struct VideoFormat;
@@ -1079,6 +1081,9 @@ class VideoMediaChannel : public MediaChannel {
   virtual bool SetVideoSend(uint32_t ssrc,
                             bool enable,
                             const VideoOptions* options) = 0;
+  // Get the VideoSink for passing frames into a video sendstream
+  virtual rtc::VideoSinkInterface<cricket::VideoFrame>* GetSink(
+      uint32_t ssrc) = 0;
   // Sets the renderer object to be used for the specified stream.
   // If SSRC is 0, the renderer is used for the 'default' stream.
   virtual bool SetRenderer(uint32_t ssrc, VideoRenderer* renderer) = 0;