Use a direct include of the message_loop header in remoting/.

remoting/host/win/rdp_client_window.h

 // Copyright (c) 2013 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_WIN_RDP_HOST_WINDOW_H_
 #define REMOTING_HOST_WIN_RDP_HOST_WINDOW_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <atlcrack.h>
 #include <atlctl.h>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/win/scoped_comptr.h"
 #include "net/base/ip_endpoint.h"
 #include "third_party/skia/include/core/SkSize.h"
 
 #import "PROGID:MsTscAx.MsTscAx" \
     exclude("wireHWND", "_RemotableHandle", "__MIDL_IWinTypes_0009"), \
     rename_namespace("mstsc") raw_interfaces_only no_implementation
 
 namespace remoting {
 
@@ skipping 120 matching lines @@
   base::win::ScopedComPtr<mstsc::IMsRdpClientAdvancedSettings> client_settings_;
 
   // Used to cancel modal dialog boxes shown by the RDP control.
   class WindowHook;
   scoped_refptr<WindowHook> window_activate_hook_;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_WIN_RDP_HOST_WINDOW_H_