= "no-font-display-late-swap";
  callbacks["4"] = t.step_func_done(result => {
    assert_equals(result, "no-font-display-late-swap, lossless-images-max-bpp=1.0");
  });
  document.body.appendChild(iframe);
}, "Any unrelated policy directives should combine with the parent's required policy.");
    </script>
  </body>
</html>
