speculation-rules/prerender/resources/exec.html

<!DOCTYPE html>
<head>
  <script src="/common/utils.js"></script>
  <script src="/common/dispatcher/dispatcher.js"></script>
  <script>
      const params = new URLSearchParams(window.location.search);
      const uuid = params.get('uuid');
      const discard_uuid = params.get('discard_uuid') || uuid;
      const referrer_policy = params.get('referrer_policy');
      if (referrer_policy) {
        const meta = document.createElement('meta');
        meta.name = 'referrer';
        meta.content = referrer_policy;
        document.head.append(meta);
      }
      new Executor(document.prerendering ? uuid : discard_uuid);
  </script>
</head>