chromium/third_party/blink/web_tests/editing/deleting/delete-mixed-editable-content-001.html

<script src="../../resources/dump-as-markup.js"></script>
<script src=../editing.js language="JavaScript" type="text/JavaScript" ></script>
<script>
function editingTest() {
    selectAllCommand();
    deleteCommand();
}
</script>
<div style="border-style:solid; border-width:2px; border-color:red; width:200px;">
<span>
   <span><span contenteditable="true">12345</span></span>
   <span contenteditable="true" id="test">hello</span>
</span>
</div>
<script>
runDumpAsTextEditingTest(false);
Markup.description("Confirm no crash when selecting all text with mixed editability.");
Markup.dump(document.getElementsByTagName("div")[0]);
</script>