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chromium/third_party/blink/web_tests/fast/lists/list-marker-before-float.html 

<!DOCTYPE html>
<p>crbug.com/548616: List markers shouldn't shift to avoid floats that come after them on a line.</p>
<ol>
  <li>
    <img width=20 height=20 style="float: left; background-color:black;">
  </li>
</ol>