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

sync/syncable/syncable_base_write_transaction.h

-// Copyright 2013 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_SYNCABLE_SYNCABLE_BASE_WRITE_TRANSACTION_H_
-#define SYNC_SYNCABLE_SYNCABLE_BASE_WRITE_TRANSACTION_H_
-
-#include "base/macros.h"
-#include "sync/base/sync_export.h"
-#include "sync/syncable/syncable_base_transaction.h"
-
-namespace syncer {
-namespace syncable {
-
-// A base class shared by both ModelNeutralWriteTransaction and
-// WriteTransaction.
-class SYNC_EXPORT BaseWriteTransaction : public BaseTransaction {
- public:
-  virtual void TrackChangesTo(const EntryKernel* entry) = 0;
-
- protected:
-  BaseWriteTransaction(
-      const tracked_objects::Location location,
-      const char* name,
-      WriterTag writer,
-      Directory* directory);
-  ~BaseWriteTransaction() override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BaseWriteTransaction);
-};
-
-}  // namespace syncable
-}  // namespace syncer
-
-#endif  // SYNC_SYNCABLE_SYNCABLE_BASE_WRITE_TRANSACTION_H_