postmessage-config.html | Explore in Territory

<!DOCTYPE html>
<script src="utils.js"></script>
<title>A page opened in a pop-up that sends a FencedFrameConfig</title>
<script>
  async function init() {
    const [key] = parseKeylist();

    const config = await generateURNFromFledge(
          "embeddee.html", [key], [], true);

    window.opener.postMessage(config, "*");
  }
  init();
</script>

chromium/third_party/blink/web_tests/external/wpt/fenced-frame/resources/postmessage-config.html