Add VideoPacket struct for video packets. Refactor Decode interface to use it.

remoting/protocol/video_stub.h

 // Copyright (c) 2010 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_VIDEO_STUB_H_
 #define REMOTING_PROTOCOL_VIDEO_STUB_H_
 
-#include "remoting/proto/video.pb.h"
-
 class Task;
 
 namespace remoting {
+
+class VideoPacket;
+
 namespace protocol {
 
 class VideoStub {
  public:
   virtual ~VideoStub() { }
 
   // TODO(sergeyu): VideoPacket is the protobuf message that is used to send
   // video packets in protobuf stream. It should not be used here. Add another
   // struct and use it to represent video packets internally.
   virtual void ProcessVideoPacket(const VideoPacket* video_packet,
                                   Task* done) = 0;
 
  protected:
   VideoStub() { }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(VideoStub);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_VIDEO_STUB_H_