Introduce Instance.kind.

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

 <link rel="import" href="../../../../packages/polymer/polymer.html">
 <link rel="import" href="class_ref.html">
 <link rel="import" href="error_view.html">
 <link rel="import" href="eval_box.html">
 <link rel="import" href="eval_link.html">
 <link rel="import" href="field_ref.html">
 <link rel="import" href="function_ref.html">
 <link rel="import" href="inbound_reference.html">
 <link rel="import" href="instance_ref.html">
 <link rel="import" href="observatory_element.html">
@@ skipping 70 matching lines @@
           </template>
 
           <template if="{{ instance.isClosure }}">
             <div class="memberItem">
               <div class="memberName">closure function</div>
               <div class="memberValue">
                 <function-ref ref="{{ instance.function }}">
                 </function-ref>
               </div>
             </div>
-          </template>
-          <template if="{{ instance.isClosure }}">
             <div class="memberItem">
               <div class="memberName">closure context</div>
               <div class="memberValue">
                 <any-service-ref ref="{{ instance.context }}">
                 </any-service-ref>
               </div>
             </div>
           </template>
 
           <template if="{{ instance.isWeakProperty }}">
@@ skipping 78 matching lines @@
 
       <div class="content">
         <eval-box callback="{{ evaluate }}"></eval-box>
       </div>
     </template>
     <view-footer></view-footer>
   </template>
 </polymer-element>
 
 <script type="application/dart" src="instance_view.dart"></script>