<!DOCTYPE html>
<html class="reftest-wait">
<head>
    <meta charset="UTF-8">
    <script>
        function start() {
            var doc = document.getElementsByTagName("iframe")[0].contentDocument;
            var vid = doc.getElementsByTagName("video")[0];

            function runnable() {
                // The doc.write forces us to recreate doc's body.
                doc.write("Hello, world");
                doc.body.appendChild(vid);
                document.documentElement.removeAttribute("class");
            }

            doc.open();
            setTimeout(runnable, 0);
        }
    </script>
</head>
<body onload='start()'>
    <iframe srcdoc="<body><video src=http://localhost:8080/ controls=true loop=true autoplay=true autobuffer=false></video>"></iframe>
</body>
</html>
