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

remoting/base/auto_thread_task_runner_unittest.cc

 // Copyright (c) 2012 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 "base/bind.h"
 #include "base/memory/ref_counted.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "remoting/base/auto_thread_task_runner.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 void SetFlagTask(bool* success) {
   *success = true;
 }
 
 }  // namespace
 
 namespace remoting {
 
 TEST(AutoThreadTaskRunnerTest, StartAndStop) {
   // Create a task runner.
   base::MessageLoop message_loop;
   scoped_refptr<AutoThreadTaskRunner> task_runner = new AutoThreadTaskRunner(
       message_loop.message_loop_proxy(), base::MessageLoop::QuitClosure());
 
   // Post a task to make sure it is executed.
   bool success = false;
   message_loop.PostTask(FROM_HERE, base::Bind(&SetFlagTask, &success));
 
   task_runner = NULL;
   message_loop.Run();
   EXPECT_TRUE(success);
 }
 
 }  // namespace remoting