LayoutTests/editing/execCommand/remove-list-1.html

<script>
if (window.layoutTestController)
     layoutTestController.dumpEditingCallbacks();
</script>
<p>This tests de-listing content.</p>
<div id="div" contenteditable="true"><ol><li></li><li>There should be a empty paragraph above this one.</li></ol></div>

<script>
var div = document.getElementById("div");
var sel = window.getSelection();

div.focus();
document.execCommand("SelectAll");
document.execCommand("InsertOrderedList");
</script>