service_worker_factory.html | Explore in Territory

<html>
  <body>
    <script type="text/javascript">
      async function setupServiceWorker(script_file) {
        await navigator.serviceWorker.register(script_file);
        await navigator.serviceWorker.ready;
        return 'ok';
      }
    </script>
  </body>
</html>

chromium/content/test/data/browsing_topics/service_worker_factory.html