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chromium/third_party/blink/web_tests/external/wpt/html/rendering/non-replaced-elements/form-controls/text-transform-ref.html 

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
</head>
<body>
  <span>THIS TEXT SHOULD BE UPPER-CASE.</span><br />

  <input type="text" value="this text should be lower-case."><br />

  <select>
    <option>this text should be lower-case.</option>
  </select><br />
  <select multiple>
    <option>this text should be lower-case.</option>
  </select><br />
  <select multiple>
    <optgroup label="this text should be lower-case.">
      <option>this text should be lower-case.</option>
    </optgroup>
  </select><br />

  <select>
    <option>THIS TEXT SHOULD BE UPPER-CASE.</option>
  </select><br />
  <select multiple>
    <option>THIS TEXT SHOULD BE UPPER-CASE.</option>
  </select><br />
  <select multiple>
    <optgroup label="THIS TEXT SHOULD BE UPPER-CASE.">
      <option>THIS TEXT SHOULD BE UPPER-CASE.</option>
    </optgroup>
  </select><br />

  <button>this text should be lower-case.</button><br />

  <textarea>this text should be lower-case.</textarea><br />
</body>
</html>