Add test that checks function UpdateServerFieldsFromUpdate is working

sync/engine/syncer_util.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.
 //
 // Utility functions manipulating syncable::Entries, intended for use by the
 // syncer.
 
 #ifndef SYNC_ENGINE_SYNCER_UTIL_H_
 #define SYNC_ENGINE_SYNCER_UTIL_H_
 
@@ skipping 51 matching lines @@
 SYNC_EXPORT_PRIVATE UniquePosition GetUpdatePosition(
     const sync_pb::SyncEntity& update,
     const std::string& suffix);
 
 // Fetch the cache_guid and item_id-based unique bookmark tag from an update.
 // Will return an empty string if someting unexpected happens.
 SYNC_EXPORT_PRIVATE std::string GetUniqueBookmarkTagFromUpdate(
     const sync_pb::SyncEntity& update);
 
 // Pass in name to avoid redundant UTF8 conversion.
-void UpdateServerFieldsFromUpdate(
+SYNC_EXPORT_PRIVATE void UpdateServerFieldsFromUpdate(
     syncable::ModelNeutralMutableEntry* local_entry,
     const sync_pb::SyncEntity& server_entry,
     const std::string& name);
 
 // Creates a new Entry iff no Entry exists with the given id.
 void CreateNewEntry(syncable::ModelNeutralWriteTransaction *trans,
                     const syncable::Id& id);
 
 // This function is called on an entry when we can update the user-facing data
 // from the server data.
@@ skipping 23 matching lines @@
                             syncable::ModelNeutralMutableEntry* target);
 
 void MarkDeletedChildrenSynced(
     syncable::Directory* dir,
     syncable::BaseWriteTransaction* trans,
     std::set<syncable::Id>* deleted_folders);
 
 }  // namespace syncer
 
 #endif  // SYNC_ENGINE_SYNCER_UTIL_H_