Implement video frame acknowledgements in the chromoting protocol.

remoting/protocol/client_video_dispatcher.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_PROTOCOL_CLIENT_VIDEO_DISPATCHER_H_
 #define REMOTING_PROTOCOL_CLIENT_VIDEO_DISPATCHER_H_
 
 #include "base/compiler_specific.h"
 #include "remoting/proto/video.pb.h"
 #include "remoting/protocol/channel_dispatcher_base.h"
 #include "remoting/protocol/protobuf_message_parser.h"
 
 namespace remoting {
 namespace protocol {
 
 class VideoStub;
 
 class ClientVideoDispatcher : public ChannelDispatcherBase {
  public:
   explicit ClientVideoDispatcher(VideoStub* video_stub);
   ~ClientVideoDispatcher() override;
 
  private:
+  struct PendingFrame;
+  typedef std::list<PendingFrame> PendingFramesList;
+
+  void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
+                          const base::Closure& done);
+
+  // Callback for VideoStub::ProcessVideoPacket().
+  void OnPacketDone(PendingFramesList::iterator pending_frame);
+
+  PendingFramesList pending_frames_;
+
+  VideoStub* video_stub_;
   ProtobufMessageParser<VideoPacket> parser_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientVideoDispatcher);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CLIENT_VIDEO_DISPATCHER_H_