chromium/chrome/test/data/extensions/api_test/webnavigation/fencedFrames/main.js

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

onload = function() {
  var f = document.createElement('iframe');
  f.src = 'iframe.html';
  document.body.appendChild(f);
};