[Sync] Create //components/sync/device_info.

components/sync/device_info/device_info_util.h

 // Copyright 2016 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 COMPONENTS_SYNC_DRIVER_DEVICE_INFO_UTIL_H_
-#define COMPONENTS_SYNC_DRIVER_DEVICE_INFO_UTIL_H_
+#ifndef COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_UTIL_H_
+#define COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_UTIL_H_
 
 #include <string>
 
 #include "base/time/time.h"
 
 namespace sync_pb {
 class DeviceInfoSpecifics;
 }
 
 namespace sync_driver {
@@ skipping 31 matching lines @@
   // Formats ClientTag from DeviceInfoSpecifics.
   static std::string SpecificsToTag(
       const sync_pb::DeviceInfoSpecifics& specifics);
 
   // Extracts cache_guid from ClientTag.
   static std::string TagToCacheGuid(const std::string& tag);
 };
 
 }  // namespace sync_driver
 
-#endif  // COMPONENTS_SYNC_DRIVER_DEVICE_INFO_UTIL_H_
+#endif  // COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_UTIL_H_