chromium/src/third_party/blink/renderer/modules/background_sync/sync_event_init.idl

// Copyright 2015 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.

// https://wicg.github.io/BackgroundSync/spec/#sync-event

dictionary SyncEventInit : ExtendableEventInit {
    required DOMString tag;
    boolean lastChance = false;
};