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;
}