[Sync] Initial USS service implementation for DeviceInfo.

components/sync_driver/device_info_sync_service_unittest.cc

 // 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.
 
 #include "components/sync_driver/device_info_sync_service.h"
 
 #include <string>
 
-#include "base/message_loop/message_loop.h"
 #include "components/sync_driver/local_device_info_provider_mock.h"
 #include "sync/api/sync_change.h"
 #include "sync/api/sync_change_processor.h"
 #include "sync/api/sync_change_processor_wrapper_for_test.h"
 #include "sync/api/sync_error_factory_mock.h"
 #include "sync/internal_api/public/attachments/attachment_service_proxy_for_test.h"
 #include "sync/util/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using syncer::AttachmentIdList;
@@ skipping 124 matching lines @@
                  SyncChange::SyncChangeType change_type,
                  const std::string& client_id,
                  const std::string& client_name) {
     SyncData sync_data = CreateRemoteData(client_id, client_name);
     SyncChange sync_change(FROM_HERE, change_type, sync_data);
     change_list->push_back(sync_change);
   }
 
  protected:
   int num_device_info_changed_callbacks_;
-  base::MessageLoopForUI message_loop_;
   scoped_ptr<LocalDeviceInfoProviderMock> local_device_;
   scoped_ptr<DeviceInfoSyncService> sync_service_;
   scoped_ptr<TestChangeProcessor> sync_processor_;
 };
 
 // Sync with empty initial data.
 TEST_F(DeviceInfoSyncServiceTest, StartSyncEmptyInitialData) {
   EXPECT_FALSE(sync_service_->IsSyncing());
 
   SyncMergeResult merge_result =
@@ skipping 394 matching lines @@
   EXPECT_EQ("client_1", sync_processor_->client_name_at(0));
 
   backup_time = syncer::ProtoTimeToTime(
       sync_processor_->device_info_at(0).backup_timestamp());
   EXPECT_EQ(6000, backup_time.ToTimeT());
 }
 
 }  // namespace
 
 }  // namespace sync_driver