pass-with-referrer.html | Explore in Territory

<!DOCTYPE html>
<html>
  <body>
    <script>
      window.onload = (event) => {
          window.opener.postMessage({
              'pass': true,
              'referrer': document.referrer},
            '*');
      };
    </script>
  </body>
</html>

chromium/third_party/blink/web_tests/external/wpt/https-upgrades/resources/pass-with-referrer.html