[Sync] Removing duplicated includes between cc and h files.

components/sync/device_info/device_info_service.cc

 // 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.
 
 #include "components/sync/device_info/device_info_service.h"
 
 #include <set>
 #include <utility>
-#include <vector>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_util.h"
 #include "components/sync/api/entity_change.h"
 #include "components/sync/api/metadata_batch.h"
 #include "components/sync/api/sync_error.h"
 #include "components/sync/base/time.h"
 #include "components/sync/core/data_batch_impl.h"
-#include "components/sync/core/simple_metadata_change_list.h"
 #include "components/sync/device_info/device_info_util.h"
 #include "components/sync/protocol/data_type_state.pb.h"
 #include "components/sync/protocol/sync.pb.h"
 
 namespace sync_driver_v2 {
 
 using base::Time;
 using base::TimeDelta;
 using syncer::SyncError;
 using syncer_v2::DataBatchImpl;
@@ skipping 498 matching lines @@
 Time DeviceInfoService::GetLastUpdateTime(
     const DeviceInfoSpecifics& specifics) {
   if (specifics.has_last_updated_timestamp()) {
     return syncer::ProtoTimeToTime(specifics.last_updated_timestamp());
   } else {
     return Time();
   }
 }
 
 }  // namespace sync_driver_v2