<!DOCTYPE html>
<script>
    if (window.testRunner) {
        testRunner.waitUntilDone();
        testRunner.dumpAsText();
    }

    window.onmessage = (event) => {
        document.body.innerHTML = event.data === false ? "PASS" : "FAIL";
        if (window.testRunner)
            testRunner.notifyDone();
    }

    window.onload = () => {
        var url = 'data:text/html,<scri' + 'pt>parent.postMessage(window.isSecureContext, "*");</scri' + 'pt>';
        document.body.innerHTML = "<iframe src='" + url + "'></iframe>";
    };
</script>
