  <li><a href="polymer_app_layout/EventTarget-class.html">EventTarget</a></li>
            <li><a href="polymer_app_layout/HttpRequestEventTarget-class.html">HttpRequestEventTarget</a></li>
            <li>HttpRequest</li>
        </ul></dd>



        </dl>
    </section>

    <section class="summary" id="constants">
        <h2>Constants</h2>

        <dl class="properties">
            <dt id="DONE" class="constant">
                <span class="top-level-variable-type">int</span>
                <span c