Make VideoTrack and VideoTrackRenderers implement rtc::VideoSourceInterface.

webrtc/api/videotrack_unittest.cc

Index: webrtc/api/videotrack_unittest.cc
diff --git a/webrtc/api/videotrack_unittest.cc b/webrtc/api/videotrack_unittest.cc
index 0f82e1830bdad84205fdae7af8e9f74dc23457e3..3491c7c7ddb046b84661e2e06bf86bee6b1a26de 100644
--- a/webrtc/api/videotrack_unittest.cc
+++ b/webrtc/api/videotrack_unittest.cc
@@ -86,7 +86,7 @@ TEST_F(VideoTrackTest, RenderVideo) {
   EXPECT_EQ(2, renderer_1->num_rendered_frames());
   EXPECT_EQ(1, renderer_2->num_rendered_frames());
 
-  video_track_->RemoveRenderer(renderer_1.get());
+  video_track_->RemoveSink(renderer_1.get());

[perkj_webrtc, 2016/02/12 14:40:14]

This should not be necessary ? 

[nisse-webrtc, 2016/02/15 08:54:48]

I tried to purge all calls to the deprecated RemoveRenderer method from the
webrtc code. But such changes can be postponed to some later cl, if you prefer.

   renderer_input->OnFrame(frame);
 
   EXPECT_EQ(2, renderer_1->num_rendered_frames());