page_with_anchor_and_cross_origin_iframe_a.html

<html>
  <body>
    <a href="2.html">Link to 2</a>
    <script>
      var iframe = document.createElement('iframe');
      iframe.src = 'https://a.test:' + window.location.port +
                       '/iframe_simple_page_with_anchors.html';
      document.body.appendChild(iframe);
    </script>
  </body>
</html>

chromium/chrome/test/data/navigation_predictor/page_with_anchor_and_cross_origin_iframe_a.html