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

remoting/host/linux/audio_pipe_reader.h

 // 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.
 
 #ifndef REMOTING_HOST_LINUX_AUDIO_PIPE_READER_H_
 #define REMOTING_HOST_LINUX_AUDIO_PIPE_READER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/ref_counted_memory.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/observer_list_threadsafe.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace remoting {
 
@@ skipping 62 matching lines @@
 };
 
 // Destroys |audio_pipe_reader| on the audio thread.
 struct AudioPipeReaderTraits {
   static void Destruct(const AudioPipeReader* audio_pipe_reader);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_LINUX_AUDIO_PIPE_READER_H_