Codebase Browser
chromium
Go to App

chromium/chrome/test/data/web_apps/stop-loading-early.html 

<!DOCTYPE html>
<html>

<head>
  <link rel="manifest" href="basic.json">
  <link rel="icon" href="basic-48.png">
</head>

<body>
  <h1>Basic web app</h1>
  <script>
    window.stop();
  </script>
</body>

</html>