Cleanup: Remove unneeded forward declarations from remoting.

remoting/client/rectangle_update_decoder.h

 // Copyright (c) 2011 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_CLIENT_RECTANGLE_UPDATE_DECODER_H
-#define REMOTING_CLIENT_RECTANGLE_UPDATE_DECODER_H
+#ifndef REMOTING_CLIENT_RECTANGLE_UPDATE_DECODER_H_
+#define REMOTING_CLIENT_RECTANGLE_UPDATE_DECODER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/task.h"
 #include "media/base/video_frame.h"
 #include "remoting/base/decoder.h"
 
 class MessageLoop;
 
 namespace remoting {
 
 class FrameConsumer;
-class VideoPacketFormat;
 class VideoPacket;
 
 namespace protocol {
 class SessionConfig;
 }  // namespace protocol
 
 // TODO(ajwong): Re-examine this API, especially with regards to how error
 // conditions on each step are reported.  Should they be CHECKs? Logs? Other?
 // TODO(sergeyu): Rename this class.
 class RectangleUpdateDecoder :
@@ skipping 59 matching lines @@
   // The video frame that the decoder writes to.
   scoped_refptr<media::VideoFrame> frame_;
   bool frame_is_new_;
 
   // True if |consumer_| is currently using the frame.
   bool frame_is_consuming_;
 };
 
 }  // namespace remoting
 
-#endif  // REMOTING_CLIENT_RECTANGLE_UPDATE_DECODER_H
+#endif  // REMOTING_CLIENT_RECTANGLE_UPDATE_DECODER_H_