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

remoting/protocol/stream_writer.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_STREAM_WRITER_H_
 #define REMOTING_PROTOCOL_STREAM_WRITER_H_
 
 #include "base/ref_counted.h"
 #include "remoting/proto/internal.pb.h"
 
@@ skipping 32 matching lines @@
  public:
   // Sends the |message| or returns false if called before Init().
   // Can be called on any thread.
   bool SendMessage(const ChromotingClientMessage& message);
 };
 
 class ControlStreamWriter : public StreamWriterBase {
  public:
   // Sends the |message| or returns false if called before Init().
   // Can be called on any thread.
-  bool SendMessage(const ChromotingHostMessage& message);
+  bool SendMessage(const ControlMessage& message);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_STREAM_WRITER_H_