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

remoting/host/resizing_host_observer_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 <list>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "remoting/host/desktop_resizer.h"
 #include "remoting/host/resizing_host_observer.h"
 #include "remoting/host/screen_resolution.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkSize.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
 
 std::ostream& operator<<(std::ostream& os, const SkISize& size) {
   return os << size.width() << "x" << size.height();
@@ skipping 219 matching lines @@
       FROM_HERE,
       run_loop.QuitClosure(),
       base::TimeDelta::FromMilliseconds(2));
   run_loop.Run();
 
   // If the QuitClosure fired before the final resize, it's a test failure.
   EXPECT_EQ(desktop_resizer_->GetCurrentSize(), SkISize::Make(300, 300));
 }
 
 }  // namespace remoting