[Sync] Move some directory-related things from core/ to syncable/.

components/sync/core/write_transaction.h

-// Copyright 2012 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_WRITE_TRANSACTION_H_
-#define COMPONENTS_SYNC_CORE_WRITE_TRANSACTION_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "components/sync/core/base_transaction.h"
-#include "components/sync/model/sync_change_processor.h"
-
-namespace tracked_objects {
-class Location;
-}  // namespace tracked_objects
-
-namespace syncer {
-
-namespace syncable {
-class BaseTransaction;
-class WriteTransaction;
-}  // namespace syncable
-
-// Sync API's WriteTransaction is a read/write BaseTransaction.  It wraps
-// a syncable::WriteTransaction.
-//
-// NOTE: Only a single model type can be mutated for a given
-// WriteTransaction.
-class WriteTransaction : public BaseTransaction {
- public:
-  // Start a new read/write transaction.
-  WriteTransaction(const tracked_objects::Location& from_here,
-                   UserShare* share);
-  // |transaction_version| stores updated model and nodes version if model
-  // is changed by the transaction, or syncable::kInvalidTransaction
-  // if not after transaction is closed. This constructor is used for model
-  // types that support embassy data.
-  WriteTransaction(const tracked_objects::Location& from_here,
-                   UserShare* share,
-                   int64_t* transaction_version);
-  ~WriteTransaction() override;
-
-  // Provide access to the syncable transaction from the API WriteNode.
-  syncable::BaseTransaction* GetWrappedTrans() const override;
-  syncable::WriteTransaction* GetWrappedWriteTrans() { return transaction_; }
-
-  // Set's a |type|'s local context. |refresh_status| controls whether
-  // a datatype refresh is performed (clearing the progress marker token and
-  // setting the version of all synced entities to 1).
-  void SetDataTypeContext(
-      ModelType type,
-      SyncChangeProcessor::ContextRefreshStatus refresh_status,
-      const std::string& context);
-
-  // Update all entries that refer to |attachment_id| indicating that
-  // |attachment_id| has been uploaded to the sync server.
-  void UpdateEntriesMarkAttachmentAsOnServer(const AttachmentId& attachment_id);
-
- protected:
-  WriteTransaction() {}
-
-  void SetTransaction(syncable::WriteTransaction* trans) {
-    transaction_ = trans;
-  }
-
- private:
-  void* operator new(size_t size);  // Transaction is meant for stack use only.
-
-  // The underlying syncable object which this class wraps.
-  syncable::WriteTransaction* transaction_;
-
-  DISALLOW_COPY_AND_ASSIGN(WriteTransaction);
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_SYNC_CORE_WRITE_TRANSACTION_H_