third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.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.

[
    Constructor(DOMString type, optional BeforeInstallPromptEventInit eventInitDict)
] interface BeforeInstallPromptEvent : Event {
    readonly attribute sequence<DOMString> platforms;
    [CallWith=ScriptState] readonly attribute Promise<DOMString> userChoice;
    [CallWith=ScriptState] Promise<void> prompt();
};