chromium/third_party/blink/web_tests/http/tests/security/resources/xss-eval2.html

<script>
document.testExpando = "It's me too!";

parent.childEval = eval;

parent.childEvalCaller = (function()
{
    // Capture window.window into a variable, since this property always returns null once
    // the context is navigated.
    var w = window;
    return function(s) {
        return w.eval(s);
    }
})();

parent.childLocalEvalCaller = (function()
{
    var e = eval;
    return function(s) { return e(s); };
})();

location.href = "http://localhost:8000/security/resources/xss-eval3.html";
</script>