chromium/chrome/test/data/privacy_budget/calls_shared_worker_with_two_clients.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Privacy Budget: Test page that registers two clients to the same shared worker</title>
<script src="test_utils.js"></script>
<script>
  const myWorker = new SharedWorker('two_clients_shared_worker.js');
  myWorker.port.onmessage = (e) => {
    sendValueToTest('Done');
  }
  myWorker.port.postMessage('Start');
</script>

<body>
  <iframe src="./iframe_shared_worker.html" title="Second Client"></iframe>
</body>