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chromium/content/test/data/accessibility/aria/aria-gridcell-focused-only.html 

<!--
@MAC-ALLOW:AXRoleDescription
@MAC-ALLOW:AXSelected=*
@WIN-ALLOW:SELECT*
@WIN-ALLOW:xml-roles*
@AURALINUX-ALLOW:xml-roles*
@AURALINUX-ALLOW:col*
@AURALINUX-ALLOW:row*
@AURALINUX-ALLOW:select*
@WAIT-FOR:Done
-->
<!DOCTYPE html>
<html>
<body>
<div role="grid">
  <div role="row">
    <span role="columnheader">Browser</span>
    <span role="columnheader">Rendering Engine</span>
  </div>
  <div role="row">
    <span role="gridcell" tabindex="-1">Chrome</span>
    <!-- Even if "blink" element is focused (from the script), it doesn't mean
      it should be marked as selected-->
    <span role="gridcell" id="blink" tabindex="-1">Blink</span>
  </div>
</div>
</body>

<script>
  document.getElementById('blink').focus();
  document.body.appendChild(document.createTextNode("Done"));
</script>

</html>