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

components/sync/core/delete_journal.h

-// Copyright (c) 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_DELETE_JOURNAL_H_
-#define COMPONENTS_SYNC_CORE_DELETE_JOURNAL_H_
-
-#include <stdint.h>
-
-#include <set>
-#include <vector>
-
-#include "components/sync/base/model_type.h"
-#include "components/sync/protocol/sync.pb.h"
-
-namespace syncer {
-
-class BaseTransaction;
-
-struct BookmarkDeleteJournal {
-  int64_t id;           // Metahandle of delete journal entry.
-  int64_t external_id;  // Bookmark ID in the native model.
-  bool is_folder;
-  sync_pb::EntitySpecifics specifics;
-};
-typedef std::vector<BookmarkDeleteJournal> BookmarkDeleteJournalList;
-
-// Static APIs for passing delete journals between syncable namspace
-// and syncer namespace.
-class DeleteJournal {
- public:
-  // Return info about deleted bookmark entries stored in the delete journal
-  // of |trans|'s directory.
-  // TODO(haitaol): remove this after SyncData supports bookmarks and
-  //                all types of delete journals can be returned as
-  //                SyncDataList.
-  static void GetBookmarkDeleteJournals(
-      BaseTransaction* trans,
-      BookmarkDeleteJournalList* delete_journals);
-
-  // Purge delete journals of given IDs from |trans|'s directory.
-  static void PurgeDeleteJournals(BaseTransaction* trans,
-                                  const std::set<int64_t>& ids);
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_SYNC_CORE_DELETE_JOURNAL_H_