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chromium/content/test/data/accessibility/accname/name-text-labelledby-aria-hidden-different-visibility-types.html 

<!--
@BLINK-DENY:description
-->
<!DOCTYPE html>
<input id="test" aria-labelledby="t1">
<div aria-hidden="true">
  <div id="t1">
    <span aria-hidden="true">a</span>
    <span style="display:none">b</span>
    <span style="visibility:hidden">c</span>
    <span>d</span>
    e
  </div>
</div>