CPU profile displayed in three tables with a tree

runtime/observatory/lib/src/elements/io_view.html

 <link rel="import" href="../../../../packages/polymer/polymer.html">
 <link rel="import" href="nav_bar.html">
 <link rel="import" href="observatory_element.html">
 <link rel="import" href="service_ref.html">
 
 <polymer-element name="io-view" extends="observatory-element">
   <template>
     <link rel="stylesheet" href="css/shared.css">
 
     <nav-bar>
       <top-nav-menu last="{{ true }}"></top-nav-menu>
       <nav-refresh callback="{{ refresh }}"></nav-refresh>
-      <nav-control></nav-control>
     </nav-bar>
 
     <div class="content">
       <h1>dart:io</h1>
 
       <br>
 
       <ul class="list-group">
         <li class="list-group-item">
           <a on-click="{{ goto }}" _href="{{gotoLink('io/http/servers', isolate)}}">HTTP Servers</a>
@@ skipping 557 matching lines @@
           </template>
         </div>
       </div>
     </div>
     <br>
     <hr>
   </template>
 </polymer-element>
 
 <script type="application/dart" src="io_view.dart"></script>