ChangeQueueComparator 20 chrome/browser/sync_file_system/drive_backend_v1/remote_change_handler.cc bool RemoteChangeHandler::ChangeQueueComparator::operator()( ChangeQueueComparator 84 chrome/browser/sync_file_system/drive_backend_v1/remote_change_handler.h typedef std::set<ChangeQueueItem, ChangeQueueComparator> PendingChangeQueue;