chromium/third_party/blink/renderer/core/testing/data/advance_focus_in_form_with_disabled_and_readonly_elements.html

<html>
<body>
<form id="form1">
  <div id="contenteditable6" contenteditable="true">contenteditable6 from form4</div><br>
    <input type="text" id="input7" disabled value="input7 from form4 but skipped due to disabled element"><br>
    <input type="text" id="input8" readonly value="input8 from form4 but skipped due to readonly element"><br>
    <textarea id="textarea7" disabled readonly>textarea7 from form4 but skipped due to disabled and readonly element</textarea><br>
    <div id="contenteditable7" contenteditable="true">contenteditable7 from form4</div><br>
</form>
</body>
</html>