>Static properties</a></li>
      <li><a href="polymer_app_layout/MutationObserver/supported.html">supported</a></li>
    
    
    
      <li class="section-title"><a href="polymer_app_layout/MutationObserver-class.html#constructors">Constructors</a></li>
      <li><a href="polymer_app_layout/MutationObserver/MutationObserver.html">MutationObserver</a></li>
    
    
      <li class="section-title"><a href="polymer_app_layout/MutationObserver-class.html#methods">Methods</a></li>
      <li><a href="polymer_