Wrapping leaf nodes in non polymer elements

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

 <link rel="import" href="../../../../packages/polymer/polymer.html">
 <link rel="import" href="function_ref.html">
 <link rel="import" href="instance_ref.html">
 <link rel="import" href="observatory_element.html">
-<link rel="import" href="nav_bar.html">
-<link rel="import" href="script_ref.html">
-<link rel="import" href="view_footer.html">
 
 <polymer-element name="code-view" extends="observatory-element">
   <template>
     <link rel="stylesheet" href="css/shared.css">
     <style>
       .table {
         table-layout: fixed;
       }
 
       th:nth-of-type(1), td:nth-of-type(1) {
@@ skipping 31 matching lines @@
       .code-comment {
         color: grey;
         font-style: italic;
       }
 
     </style>
     <nav-bar>
       <top-nav-menu></top-nav-menu>
       <vm-nav-menu vm="{{ code.isolate.vm }}"></vm-nav-menu>
       <isolate-nav-menu isolate="{{ code.isolate }}"></isolate-nav-menu>
-      <nav-menu link="{{ makeLink('/inspect', code) }}" anchor="{{ code.name }}" last="{{ true }}"></nav-menu>
+      <nav-menu link="{{ makeLink('/inspect', code) }}" anchor="{{ code.name }}"
+                                                  last="{{ true }}"></nav-menu>
       <nav-refresh callback="{{ refresh }}"></nav-refresh>
-      <nav-refresh callback="{{ refreshTicks }}" label="Refresh Ticks"></nav-refresh>
+      <nav-refresh callback="{{ refreshTicks }}" label="Refresh Ticks"
+                                                                ></nav-refresh>
+      <nav-notify notifications="{{ app.notifications }}"></nav-notify>
     </nav-bar>
     <div class="content">
       <template if="{{ code.isDartCode && code.isOptimized }}">
         <h1>Optimized code for {{ code.name }}</h1>
       </template>
       <template if="{{ !(code.isDartCode && code.isOptimized) }}">
         <h1>Code for {{ code.name }}</h1>
       </template>
       <object-common object="{{ code }}"></object-common>
 
@@ skipping 78 matching lines @@
         </thead>
         <tbody class="monospace" id="disassemblyTableBody">
         </tbody>
       </table>
     </div>
     <view-footer></view-footer>
   </template>
 </polymer-element>
 
 <script type="application/dart" src="code_view.dart"></script>