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

remoting/host/win/chromoting_module.cc

 // 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.
 
 #include "remoting/host/win/chromoting_module.h"
 
 #include <sddl.h>
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/windows_version.h"
 #include "remoting/base/auto_thread_task_runner.h"
 #include "remoting/base/typed_buffer.h"
 #include "remoting/host/host_exit_codes.h"
 #include "remoting/host/win/com_security.h"
 #include "remoting/host/win/elevated_controller.h"
 #include "remoting/host/win/rdp_desktop_session.h"
@@ skipping 201 matching lines @@
 
   ATL::_ATL_OBJMAP_ENTRY rdp_client_entry[] = {
     OBJECT_ENTRY(__uuidof(RdpDesktopSession), RdpDesktopSession)
   };
 
   ChromotingModule module(rdp_client_entry, rdp_client_entry + 1);
   return module.Run() ? kSuccessExitCode : kInitializationFailed;
 }
 
 } // namespace remoting