chromium/third_party/blink/web_tests/http/tests/security/resources/cross-frame-iframe-for-get-override-test.html

<html>
<head>
    <script>

        window.focus = function() { return "new focus"; }
        window.__proto__.blur = function() { return "new blur"; }
        window.history.close = "new close";
    </script>
</head>
<body>
</body>
</html>