<!DOCTYPE html>
<html>
<head>
<script>
function checkIfDone() {
    try {
        var url = document.querySelector("iframe").contentWindow.location.href;
        if (url)
            console.log("FAIL: Could read contentWindow.location.href");
        else
            throw null;
    } catch (e) {
        if (e)
            console.log(e);
        console.log("PASS: Could not read contentWindow.location.href");
    }
    testRunner.notifyDone();
}
</script>
</head>
<body>
<iframe src="http://127.0.0.1:8000/security/XFrameOptions/resources/x-frame-options-frame-ancestors-same-origin-deny.cgi" onload="checkIfDone()"></iframe>
</body>
</html>