remoting/host: Fix cpplint warning of header guards.

remoting/host/local_input_monitor.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_LOCAL_INPUT_MONITOR_H_
-#define REMOTING_LOCAL_INPUT_MONITOR_H_
+#ifndef REMOTING_HOST_LOCAL_INPUT_MONITOR_H_
+#define REMOTING_HOST_LOCAL_INPUT_MONITOR_H_
+#pragma once
 
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace remoting {
 
 class MouseMoveObserver;
 
 class LocalInputMonitor {
  public:
   virtual ~LocalInputMonitor() {}
 
   // Starts local input monitoring. This class is also responsible for
   // of catching the disconnection keyboard shortcut on Mac and Linux
   // (Ctlr-Alt-Esc). The |disconnect_callback| is called when this key
   // combination is pressed.
   //
   // TODO(sergeyu): Refactor shortcut code to a separate class.
   virtual void Start(MouseMoveObserver* mouse_move_observer,
                      const base::Closure& disconnect_callback) = 0;
   virtual void Stop() = 0;
 
   static scoped_ptr<LocalInputMonitor> Create();
 };
 
 }  // namespace remoting
 
-#endif
+#endif  // REMOTING_HOST_LOCAL_INPUT_MONITOR_H_