chromium/content/test/data/accessibility/html/table-canvas-fallback.html

<!DOCTYPE html>
<!-- All tables in canvas fallback content are data tables, because there is no
     other reason to use a table there. After all, canvas fallback content
     not rendered, so author has no reason to use the table for layout.  -->
<canvas width=300 height=300>
  <table>
    <tr>
      <td>Rabbits</td>
      <td>Goldfish</td>
    </tr>
    <tr>
      <td>Cats</td>
      <td>Dogs</td>
    </tr>
  </table>
</canvas>

<!-- The same table structure is a layout table when not in a canvas fallback -->
<table>
  <tr>
    <td>Watermelon</td>
    <td>Fish food</td>
  </tr>
  <tr>
    <td>Tunafish</td>
    <td>Beef</td>
  </tr>
</table>