chromium/chrome/test/data/devtools/dispatch_key_event_shows_auto_fill.html

<html>
<head>
<script>
function run()
{
    if (window.location.toString().endsWith("?name=Abbf")) {
        document.getElementById("name").value = "";
        document.getElementById("name").focus();
        console.log("ready");
        return;
    }
    document.getElementById("name").value = "Abbf";
    document.getElementById("submit").click();
}
</script>
</head>
<body onload="run()">
    <form action="?" onsubmit="this.action += window.location.hash">
        <input type="text" id="name" name="name" value="" />
        <input type="submit" id="submit" value="submit" />
    </form>
</body>
</html>