<html>
<body>
    <p>Frame on a foreign domain (opened using window.open).</p>
    <iframe id="aFrame"></iframe>
    <script>
        var url = "data:text/html,<html>"
            + "<head>"
            +     "<scr" + "ipt>"
            +         "function loaded() {"
            +             "if (window.testRunner)"
            +                 "testRunner.globalFlag = true;"
            +         "}"
            +     "</scri" + "pt>"
            + "</head>"
            + "<body onload='loaded();'>"
            +     "<p id='accessMe'>PASS: Access from the main frame was denied!</p>"
            +     "<p>Inner-inner iframe. This iframe (which is data: URL and whose parent is on a foreign domain) is the frame that the"
            +     " main frame is trying to access.  It should not have access to it.</p>"
            + "</body>"
            + "</html>";

        var frame = document.getElementById('aFrame');
        frame.src = url;
    </script>
</body>
</html>