factory constructor StorageEvent

Source

factory StorageEvent(String type,
  {bool canBubble: false, bool cancelable: false, String key, String oldValue,
  String newValue, String url, Storage storageArea}) {

  StorageEvent e = document._createEvent("StorageEvent");
  e._initStorageEvent(type, canBubble, cancelable, key, oldValue,
      newValue, url, storageArea);
  return e;
}