chromium/chrome/test/data/extensions/api_test/webrequest/test_websocket.html

<!--
 * Copyright 2017 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
-->
<body>
<script src="framework.js"></script>
<script src="websocket.js"></script>
<script src="test_websocket.js"></script>
</body>