Move //device/sensor impl to be part of the internal implemenation of the Device Service.

services/device/sensors/ambient_light_mac.h

 // Copyright 2015 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 DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_
-#define DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_
+#ifndef SERVICE_DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_
+#define SERVICE_DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_
 
 #include <IOKit/IOKitLib.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 
 namespace device {
 
@@ skipping 16 matching lines @@
   bool Init();
 
   // IOKit connection to the local sensor.
   io_connect_t io_connection_;
 
   DISALLOW_COPY_AND_ASSIGN(AmbientLightSensor);
 };
 
 }  // namespace device
 
-#endif  // DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_
+#endif  // SERVICE_DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_