<html>
<body>
    <p>Inner iframe on a foreign domain.</p>
    <script>
        var url = "data:text/html,<html>"
            + "<body>"
            +     "<p id='accessMe'>PASS: Cross frame access from a frame on a foreign domain denied!</p>"
            +     "<p>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>"
            +     "<iframe style='width: 0px; height: 0px;' id='flag'></iframe>"
            + "</body>"
            + "</html>";

        window.location = url;
    </script>
</body>
</html>