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

sync/engine/process_updates_util.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_ENGINE_PROCESS_UPDATES_UTIL_H_
-#define SYNC_ENGINE_PROCESS_UPDATES_UTIL_H_
-
-#include <stdint.h>
-
-#include <vector>
-
-#include "sync/internal_api/public/base/model_type.h"
-
-namespace sync_pb {
-class SyncEntity;
-}
-
-namespace syncer {
-
-namespace sessions {
-class StatusController;
-}
-
-namespace syncable {
-class ModelNeutralWriteTransaction;
-class Directory;
-}
-
-struct UpdateCounters;
-
-typedef std::vector<const sync_pb::SyncEntity*> SyncEntityList;
-
-// Processes all the updates associated with a single ModelType.
-void ProcessDownloadedUpdates(
-    syncable::Directory* dir,
-    syncable::ModelNeutralWriteTransaction* trans,
-    ModelType type,
-    const SyncEntityList& applicable_updates,
-    sessions::StatusController* status,
-    UpdateCounters* counters);
-
-// Tombstones all entries of |type| whose versions are older than
-// |version_watermark| unless they are type root or unsynced/unapplied.
-void ExpireEntriesByVersion(syncable::Directory* dir,
-                            syncable::ModelNeutralWriteTransaction* trans,
-                            ModelType type,
-                            int64_t version_watermark);
-
-}  // namespace syncer
-
-#endif  // SYNC_ENGINE_PROCESS_UPDATES_UTIL_H_