          <dd>
                  Sets the value of an HTTP requst header.
              </dd>
          </dl>
      </section>

    </div> <!-- /.main-content -->

  <div class="col-xs-6 col-sm-6 col-md-3 sidebar sidebar-offcanvas-right">
    <h5>HttpRequest</h5>
    <ol>
      <li class="section-title"><a href="polymer_app_layout/HttpRequest-class.html#constants">Constants</a></li>
      <li><a href="polymer_app_layout/HttpRequest/DONE.html">DONE</a></li>
      <li><a href="polymer_app_layout/HttpRequest/H