chromium/content/test/data/accessibility/html/contenteditable-spans.html

<!--
@BLINK-ALLOW:next*
@BLINK-ALLOW:prev*
-->
<div role="textbox" contenteditable="true">
  <p><span class=abc>ABC</span><span class=def>DEF</span></p>
  <p><span class=xyz>XYZ</span><span class=empty><span></span></span>123</p>
</div>