chromium/chrome/test/data/extensions/platform_apps/web_view/two_iframes_web_request/main.html

<!--
 * 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.
-->
<html>
  <body>
  <script src='launched.js'></script>
  <iframe src='embedder1.html'></iframe>
  <iframe src='embedder2.html'></iframe>
</body>
</html>