Move device_sensors cross-process headers out of //content

device/sensors/public/cpp/device_light_data.h

 // Copyright 2014 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 CONTENT_COMMON_DEVICE_SENSORS_DEVICE_LIGHT_DATA_H_
-#define CONTENT_COMMON_DEVICE_SENSORS_DEVICE_LIGHT_DATA_H_
-
-#include "content/common/content_export.h"
+#ifndef DEVICE_SENSORS_PUBLIC_CPP_DEVICE_LIGHT_DATA_H_
+#define DEVICE_SENSORS_PUBLIC_CPP_DEVICE_LIGHT_DATA_H_
 
 namespace content {
 
 // This struct is intentionally POD and fixed size so that it can be stored
-// in shared memory between the browser and the renderer processes.
+// in shared memory between the sensor interface impl and its clients.
 // POD class should be a struct, should have an inline cstor that uses
 // initializer lists and no dstor.
 struct DeviceLightData {
   DeviceLightData() : value(-1) {}
   double value;
 };
 
 }  // namespace content
 
-#endif  // CONTENT_COMMON_DEVICE_SENSORS_DEVICE_LIGHT_DATA_H_
+#endif  // DEVICE_SENSORS_PUBLIC_CPP_DEVICE_LIGHT_DATA_H_