// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// https://wicg.github.io/background-fetch/#background-fetch-update-ui-event
[
Exposed=ServiceWorker,
RuntimeEnabled=BackgroundFetch
] interface BackgroundFetchUpdateUIEvent : BackgroundFetchEvent {
constructor(DOMString type, BackgroundFetchEventInit init);
[CallWith=ScriptState, RaisesException] Promise<undefined> updateUI(optional BackgroundFetchUIOptions options = {});
};