Implement video frame acknowledgements in the chromoting protocol.

remoting/protocol/host_video_dispatcher.cc

Index: remoting/protocol/host_video_dispatcher.cc
diff --git a/remoting/protocol/host_video_dispatcher.cc b/remoting/protocol/host_video_dispatcher.cc
index b9a12c0294f28ac8e95d65ca52c8e6c000e8334f..4a752fbb74fa5300b5ec629044638f6ab4461344 100644
--- a/remoting/protocol/host_video_dispatcher.cc
+++ b/remoting/protocol/host_video_dispatcher.cc
@@ -7,14 +7,18 @@
 #include "base/bind.h"
 #include "net/socket/stream_socket.h"
 #include "remoting/base/constants.h"
-#include "remoting/proto/video.pb.h"
 #include "remoting/protocol/message_serialization.h"
+#include "remoting/protocol/video_feedback_stub.h"
 
 namespace remoting {
 namespace protocol {
 
 HostVideoDispatcher::HostVideoDispatcher()
-    : ChannelDispatcherBase(kVideoChannelName) {
+    : ChannelDispatcherBase(kVideoChannelName),
+      parser_(
+          base::Bind(&HostVideoDispatcher::OnVideoAck, base::Unretained(this)),
+          reader()),
+      video_feedback_stub_(nullptr) {
 }
 
 HostVideoDispatcher::~HostVideoDispatcher() {
@@ -25,5 +29,13 @@ void HostVideoDispatcher::ProcessVideoPacket(scoped_ptr<VideoPacket> packet,
   writer()->Write(SerializeAndFrameMessage(*packet), done);
 }
 
+void HostVideoDispatcher::OnVideoAck(scoped_ptr<VideoAck> ack,
+                                     const base::Closure& done) {
+  if (video_feedback_stub_)
+    video_feedback_stub_->ProcessVideoAck(ack.Pass());
+
+  done.Run();
+}
+
 }  // namespace protocol
 }  // namespace remoting