Cleanup: Remove unneeded forward declarations from remoting.

remoting/host/register_support_host_request.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_HOST_SUPPORT_HOST_REGISTER_QUERY_H_
-#define REMOTING_HOST_SUPPORT_HOST_REGISTER_QUERY_H_
+#ifndef REMOTING_HOST_REGISTER_SUPPORT_HOST_REQUEST_H_
+#define REMOTING_HOST_REGISTER_SUPPORT_HOST_REQUEST_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "remoting/host/host_key_pair.h"
 #include "remoting/host/host_status_observer.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
 
 class MessageLoop;
 
 namespace buzz {
 class XmlElement;
 }  // namespace buzz
 
 namespace base {
 class TimeDelta;
 }  // namespace base
 
 namespace remoting {
 
 class IqRequest;
 class IqSender;
-class MutableHostConfig;
 
 // RegisterSupportHostRequest sends support host registeration request
 // to the Chromoting Bot. It listens to the status of the host using
 // HostStatusObserver interface and sends the request when signalling
 // channel is connected. When a response is received from the bot, it
 // calls the callback specified in the Init() method.
 class RegisterSupportHostRequest : public HostStatusObserver {
  public:
   // First parameter is set to true on success. Second parameter is
   // the new SessionID received from the bot. Third parameter is the
@@ skipping 38 matching lines @@
   RegisterCallback callback_;
   scoped_ptr<IqSender> iq_sender_;
   scoped_ptr<IqRequest> request_;
   HostKeyPair key_pair_;
 
   DISALLOW_COPY_AND_ASSIGN(RegisterSupportHostRequest);
 };
 
 }  // namespace remoting
 
-#endif  // REMOTING_HOST_SUPPORT_HOST_REGISTER_QUERY_H_
+#endif  // REMOTING_HOST_REGISTER_SUPPORT_HOST_REQUEST_H_