   <option>XXXXXXX</option>
    </select>
  </div>

  <div class="webkit-box">
    <!-- This is a special case: <fieldset> is not compressible
         in blink, webkit, or gecko. -->
    <fieldset data-expected-width="140">XXXXXXX</fieldset>
  </div>

  <div class="webkit-box">
    <iframe data-expected-width="50"></iframe>
  </div>

  <div class="webkit-box">
    <button data-expected-width="50">XXXXXXX</button>
  </div>

  <div class="webkit-box">
    <canvas width="300" height="100" data-expected-width=