Implement video frame acknowledgements in the chromoting protocol.

remoting/client/plugin/pepper_video_renderer_2d.cc

Index: remoting/client/plugin/pepper_video_renderer_2d.cc
diff --git a/remoting/client/plugin/pepper_video_renderer_2d.cc b/remoting/client/plugin/pepper_video_renderer_2d.cc
index 6f3816d07844aa21312d4a37dd5caebde426c097..b227573126a8800d5fe6e19700d1e340294841d0 100644
--- a/remoting/client/plugin/pepper_video_renderer_2d.cc
+++ b/remoting/client/plugin/pepper_video_renderer_2d.cc
@@ -194,10 +194,11 @@ ChromotingStats* PepperVideoRenderer2D::GetStats() {
 
 void PepperVideoRenderer2D::ProcessVideoPacket(
     scoped_ptr<VideoPacket> video_packet,
-    const base::Closure& done) {
+    const ProgressCallback& progress_callback) {
   DCHECK(CalledOnValidThread());
 
-  software_video_renderer_->ProcessVideoPacket(video_packet.Pass(), done);
+  software_video_renderer_->ProcessVideoPacket(video_packet.Pass(),
+                                               progress_callback);
 }
 
 void PepperVideoRenderer2D::ApplyBuffer(const webrtc::DesktopSize& view_size,