Simplify FrameConsumer interface. Remove FrameProducer interface.

remoting/test/test_video_renderer.cc

Index: remoting/test/test_video_renderer.cc
diff --git a/remoting/test/test_video_renderer.cc b/remoting/test/test_video_renderer.cc
index efc92746900bb5979c5da42b886fdeeac6653aef..0c8dd8fcec786da569ff5268ce327067a347c6ed 100644
--- a/remoting/test/test_video_renderer.cc
+++ b/remoting/test/test_video_renderer.cc
@@ -174,7 +174,6 @@ void TestVideoRenderer::Core::ProcessVideoPacket(
                                     packet->format().screen_height());
     if (!screen_size_.equals(source_size)) {
       screen_size_ = source_size;
-      decoder_->Initialize(screen_size_);
       frame_.reset(new webrtc::BasicDesktopFrame(screen_size_));
     }
   }