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chromium/third_party/blink/web_tests/fast/frames/invalid-frameset-compute-edge.html 

<html xmlns="http://www.w3.org/1999/xhtml">
<frameset>
    <frameset id="tCF3">
        <frame id="tCF4"></frame>
    </frameset>
    <frame>

    <script>
        document.body.appendChild(document.getElementById('tCF3'));
        window.scrollTo(18, 64);
        document.getElementById('tCF4').setAttribute("noresize", "NORESIZE");
    </script>>
</html>