[Sync] Move some things from core/ to model(_impl)/.

components/sync/core/model_type_store_impl.h

Index: components/sync/core/model_type_store_impl.h
diff --git a/components/sync/core/model_type_store_impl.h b/components/sync/core/model_type_store_impl.h
deleted file mode 100644
index c1b089d41f7273c31652043a6cd0feb99c4b927b..0000000000000000000000000000000000000000
--- a/components/sync/core/model_type_store_impl.h
+++ /dev/null
@@ -1,123 +0,0 @@
-// 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 COMPONENTS_SYNC_CORE_MODEL_TYPE_STORE_IMPL_H_
-#define COMPONENTS_SYNC_CORE_MODEL_TYPE_STORE_IMPL_H_
-
-#include <memory>
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
-#include "components/sync/base/model_type.h"
-#include "components/sync/model/model_type_store.h"
-
-namespace leveldb {
-class WriteBatch;
-}  // namespace leveldb
-
-namespace syncer {
-
-class ModelTypeStoreBackend;
-
-// ModelTypeStoreImpl handles details of store initialization, threading and
-// leveldb key formatting. Actual leveldb IO calls are performed by
-// ModelTypeStoreBackend.
-class ModelTypeStoreImpl : public ModelTypeStore, public base::NonThreadSafe {
- public:
-  ~ModelTypeStoreImpl() override;
-
-  static void CreateStore(
-      const ModelType type,
-      const std::string& path,
-      scoped_refptr<base::SequencedTaskRunner> blocking_task_runner,
-      const InitCallback& callback);
-  static void CreateInMemoryStoreForTest(const InitCallback& callback);
-
-  // ModelTypeStore implementation.
-  void ReadData(const IdList& id_list,
-                const ReadDataCallback& callback) override;
-  void ReadAllData(const ReadAllDataCallback& callback) override;
-  void ReadAllMetadata(const ReadMetadataCallback& callback) override;
-  std::unique_ptr<WriteBatch> CreateWriteBatch() override;
-  void CommitWriteBatch(std::unique_ptr<WriteBatch> write_batch,
-                        const CallbackWithResult& callback) override;
-  void WriteData(WriteBatch* write_batch,
-                 const std::string& id,
-                 const std::string& value) override;
-  void WriteMetadata(WriteBatch* write_batch,
-                     const std::string& id,
-                     const std::string& value) override;
-  void WriteGlobalMetadata(WriteBatch* write_batch,
-                           const std::string& value) override;
-  void DeleteData(WriteBatch* write_batch, const std::string& id) override;
-  void DeleteMetadata(WriteBatch* write_batch, const std::string& id) override;
-  void DeleteGlobalMetadata(WriteBatch* write_batch) override;
-
- private:
-  class WriteBatchImpl : public WriteBatch {
-   public:
-    WriteBatchImpl();
-    ~WriteBatchImpl() override;
-    std::unique_ptr<leveldb::WriteBatch> leveldb_write_batch_;
-  };
-
-  static void BackendInitDone(
-      const ModelType type,
-      std::unique_ptr<Result> result,
-      scoped_refptr<base::SequencedTaskRunner> blocking_task_runner,
-      const InitCallback& callback,
-      scoped_refptr<ModelTypeStoreBackend> backend);
-
-  // Format prefix key for data/metadata records with |type|.
-  static std::string FormatDataPrefix(const ModelType type);
-  static std::string FormatMetaPrefix(const ModelType type);
-
-  static leveldb::WriteBatch* GetLeveldbWriteBatch(WriteBatch* write_batch);
-
-  // Format key for data/metadata records with given id.
-  std::string FormatDataKey(const std::string& id);
-  std::string FormatMetadataKey(const std::string& id);
-
-  ModelTypeStoreImpl(
-      const ModelType type,
-      scoped_refptr<ModelTypeStoreBackend> backend,
-      scoped_refptr<base::SequencedTaskRunner> backend_task_runner);
-
-  // Callbacks for different calls to ModelTypeStoreBackend.
-  void ReadDataDone(const ReadDataCallback& callback,
-                    std::unique_ptr<RecordList> record_list,
-                    std::unique_ptr<IdList> missing_id_list,
-                    Result result);
-  void ReadAllDataDone(const ReadAllDataCallback& callback,
-                       std::unique_ptr<RecordList> record_list,
-                       Result result);
-  void ReadMetadataRecordsDone(const ReadMetadataCallback& callback,
-                               std::unique_ptr<RecordList> metadata_records,
-                               Result result);
-  void ReadAllMetadataDone(const ReadMetadataCallback& callback,
-                           std::unique_ptr<RecordList> metadata_records,
-                           std::unique_ptr<RecordList> global_metadata_records,
-                           std::unique_ptr<IdList> missing_id_list,
-                           Result result);
-  void WriteModificationsDone(const CallbackWithResult& callback,
-                              Result result);
-
-  // Backend should be deleted on backend thread.
-  // To accomplish this store's dtor posts task to backend thread passing
-  // backend ownership to task parameter.
-  scoped_refptr<ModelTypeStoreBackend> backend_;
-  scoped_refptr<base::SequencedTaskRunner> backend_task_runner_;
-
-  // Key prefix for data/metadata records of this model type.
-  const std::string data_prefix_;
-  const std::string metadata_prefix_;
-
-  base::WeakPtrFactory<ModelTypeStoreImpl> weak_ptr_factory_;
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_SYNC_CORE_MODEL_TYPE_STORE_IMPL_H_