Add missing IWYU message_loop.h includes.

remoting/host/setup/daemon_controller.cc

 // Copyright 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/setup/daemon_controller.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
+#include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "remoting/base/auto_thread.h"
 #include "remoting/base/auto_thread_task_runner.h"
 
 namespace remoting {
 
 // Name of the Daemon Controller's worker thread.
@@ skipping 172 matching lines @@
   if (!servicing_request)
     ServiceNextRequest();
 }
 
 void DaemonController::ServiceNextRequest() {
   if (!pending_requests_.empty())
     delegate_task_runner_->PostTask(FROM_HERE, pending_requests_.front());
 }
 
 }  // namespace remoting