chromium/chrome/test/data/extensions/api_test/permissions_test/embedded_into_iframe/no_permissions/content-script.js

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

var iframe = document.createElement('iframe');
iframe.name = 'iframe_with_embedded_extension';
iframe.src =
    chrome.runtime.getURL('iframe_content.html' + document.location.search);
iframe.allow = 'microphone \'src\'; camera \'src\'; geolocation \'src\'';
document.body.appendChild(iframe);