Cleanup: Remove unneeded forward declarations from remoting.

remoting/protocol/host_message_dispatcher.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_PROTOCOL_HOST_MESSAGE_DISPATCHER_H_
 #define REMOTING_PROTOCOL_HOST_MESSAGE_DISPATCHER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/task.h"
 #include "remoting/protocol/message_reader.h"
 
-namespace base {
-class MessageLoopProxy;
-}  // namespace base
-
 namespace remoting {
 namespace protocol {
 
 class ConnectionToClient;
 class ControlMessage;
 class EventMessage;
 class HostStub;
 class InputStub;
 class Session;
 
@@ skipping 43 matching lines @@
   // Stubs for host and input. These objects are not owned.
   // They are called on the thread there data is received, i.e. jingle thread.
   HostStub* host_stub_;
   InputStub* input_stub_;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_HOST_MESSAGE_DISPATCHER_H_