<html>
<head>
<title>Dummy test page</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"></meta>
</head>
<body>
    <h1>This tab will close</h2>
    <script>
        // We use half a second timeout because this can race in debug builds.
        setTimeout( () => {
            window.close();
          }, 500);
    </script>
</body>
</html>
