Cleanup: Remove unneeded forward declarations from remoting.

remoting/protocol/client_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_CLIENT_MESSAGE_DISPATCHER_H_
 #define REMOTING_PROTOCOL_CLIENT_MESSAGE_DISPATCHER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "remoting/protocol/message_reader.h"
 
 namespace remoting {
 
-class EventMessage;
-
 namespace protocol {
 
 class ClientStub;
 class ControlMessage;
 class Session;
 
 // A message dispatcher used to listen for messages received in
 // protocol::Session. It dispatches messages to the corresponding
 // handler.
 //
@@ skipping 25 matching lines @@
   // They are called on the thread there data is received, i.e. jingle thread.
   ClientStub* client_stub_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientMessageDispatcher);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CLIENT_MESSAGE_DISPATCHER_H_