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

services/device/public/cpp/sensors/device_util_mac.h

Index: services/device/public/cpp/sensors/device_util_mac.h
diff --git a/device/sensors/public/cpp/device_util_mac.h b/services/device/public/cpp/sensors/device_util_mac.h
similarity index 66%
rename from device/sensors/public/cpp/device_util_mac.h
rename to services/device/public/cpp/sensors/device_util_mac.h
index 82c728af5d4e967b3cea3ba8f8f0807ef49d1495..f3794f1542e6c87003dde44e368b7ea6c26a6dbf 100644
--- a/device/sensors/public/cpp/device_util_mac.h
+++ b/services/device/public/cpp/sensors/device_util_mac.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef DEVICE_SENSORS_PUBLIC_CPP_DEVICE_UTIL_MAC_H_
-#define DEVICE_SENSORS_PUBLIC_CPP_DEVICE_UTIL_MAC_H_
+#ifndef SERVICES_DEVICE_PUBLIC_CPP_SENSORS_DEVICE_UTIL_MAC_H_
+#define SERVICES_DEVICE_PUBLIC_CPP_SENSORS_DEVICE_UTIL_MAC_H_
 
 #include <stdint.h>
 
@@ -15,4 +15,4 @@ double LMUvalueToLux(uint64_t raw_value);
 
 }  // namespace device
 
-#endif  // DEVICE_SENSORS_PUBLIC_CPP_DEVICE_UTIL_MAC_H_
+#endif  // SERVICES_DEVICE_PUBLIC_CPP_SENSORS_DEVICE_UTIL_MAC_H_