[Sync] Move //sync to //components/sync.

sync/api/fake_model_type_service.h

-// 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.
-
-#ifndef SYNC_API_FAKE_MODEL_TYPE_SERVICE_H_
-#define SYNC_API_FAKE_MODEL_TYPE_SERVICE_H_
-
-#include <string>
-
-#include "sync/api/model_type_service.h"
-
-namespace syncer_v2 {
-
-// A non-functional implementation of ModelTypeService for
-// testing purposes.
-class FakeModelTypeService : public ModelTypeService {
- public:
-  FakeModelTypeService();
-  explicit FakeModelTypeService(
-      const ChangeProcessorFactory& change_processor_factory);
-  ~FakeModelTypeService() override;
-
-  std::unique_ptr<MetadataChangeList> CreateMetadataChangeList() override;
-  syncer::SyncError MergeSyncData(
-      std::unique_ptr<MetadataChangeList> metadata_change_list,
-      EntityDataMap entity_data_map) override;
-  syncer::SyncError ApplySyncChanges(
-      std::unique_ptr<MetadataChangeList> metadata_change_list,
-      EntityChangeList entity_changes) override;
-  void GetData(ClientTagList client_tags, DataCallback callback) override;
-  void GetAllData(DataCallback callback) override;
-  std::string GetClientTag(const EntityData& entity_data) override;
-  void OnChangeProcessorSet() override;
-
-  bool HasChangeProcessor() const;
-};
-
-}  // namespace syncer_v2
-
-#endif  // SYNC_API_FAKE_MODEL_TYPE_SERVICE_H_