tab_that_closes.html

Enable keyboard shortcuts

<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>