chromium/chrome/test/data/extensions/browsertest/chrome_theme_url/test.html

<!doctype html>
<!--
 * Copyright 2016 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
-->
<img id=theme src="chrome://theme/IDR_DISABLE">
<script src="test.js"></script>