testing/web-platform/tests/html/browsers/history/the-location-interface/resources/iframe-postmessage-to-parent-parent.sub.html


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<!DOCTYPE HTML>
<html>
  <head>
    <title>Resource file for test of Referer with location.replace</title>
  </head>
  <body>
    <div></div>
    <script>
      const referer = "{{header_or_default(referer, missing)}}"
      window.parent.parent.postMessage(referer);
      document.querySelector("div").textContent = `Referer header: ${referer}`;
    </script>
  </body>
</html>