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chromium/content/test/data/accessibility/aria/aria-brailleroledescription.html 

<!--
@MAC-ALLOW:AXBrailleRoleDescription
@WIN-ALLOW:brailleroledescription*
@UIA-WIN-ALLOW:*
@AURALINUX-ALLOW:brailleroledescription*
@BLINK-ALLOW:ariaBrailleRoleDescription*
-->
<!DOCTYPE html>
<html>
</body>
  <div role="checkbox" aria-brailleroledescription="aria braille role description"></div>
  <div role="checkbox"></div>
  <div role="checkbox" aria-brailleroledescription=""></div>
</body>
</html>