Implement video frame acknowledgements in the chromoting protocol.

remoting/protocol/client_video_dispatcher.h

Index: remoting/protocol/client_video_dispatcher.h
diff --git a/remoting/protocol/client_video_dispatcher.h b/remoting/protocol/client_video_dispatcher.h
index b2b1e3162ab5b08fb2317fe3e00ed3d02ae2bbcf..445fb4c0dec74694bec6215b3f9d67296816b618 100644
--- a/remoting/protocol/client_video_dispatcher.h
+++ b/remoting/protocol/client_video_dispatcher.h
@@ -9,18 +9,28 @@
 #include "remoting/proto/video.pb.h"
 #include "remoting/protocol/channel_dispatcher_base.h"
 #include "remoting/protocol/protobuf_message_parser.h"
+#include "remoting/protocol/video_stub.h"
 
 namespace remoting {
 namespace protocol {
 
-class VideoStub;
-
 class ClientVideoDispatcher : public ChannelDispatcherBase {
  public:
   explicit ClientVideoDispatcher(VideoStub* video_stub);
   ~ClientVideoDispatcher() override;
 
  private:
+  void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
+                          const base::Closure& done);
+
+  // Callback for VideoStub::ProcessVideoPacket().
+  void OnPacketProgress(int frame_id,
+                        base::TimeDelta time_to_receive,
+                        base::TimeTicks received_time,
+                        const base::Closure& done,
+                        VideoStub::PacketProgress packet_progress);
+
+  VideoStub* video_stub_;
   ProtobufMessageParser<VideoPacket> parser_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientVideoDispatcher);