Wrapping leaf nodes in non polymer elements

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

 <link rel="import" href="../../../../packages/polymer/polymer.html">
 <link rel="import" href="code_ref.html">
 <link rel="import" href="function_ref.html">
-<link rel="import" href="nav_bar.html">
 <link rel="import" href="observatory_element.html">
-<link rel="import" href="sliding_checkbox.html">
-<link rel="import" href="view_footer.html">
 
 <polymer-element name="sample-buffer-control" extends="observatory-element">
   <template>
     <link rel="stylesheet" href="css/shared.css">
     <style>
     .statusMessage {
       font-size: 150%;
       font-weight: bold;
     }
 
@@ skipping 259 matching lines @@
 </polymer-element>
 
 
 <polymer-element name="cpu-profile-table" extends="observatory-element">
   <template>
     <link rel="stylesheet" href="css/shared.css">
     <nav-bar>
       <top-nav-menu></top-nav-menu>
       <vm-nav-menu vm="{{ isolate.vm }}"></vm-nav-menu>
       <isolate-nav-menu isolate="{{ isolate }}"></isolate-nav-menu>
-      <nav-menu link="{{ makeLink('/profiler-table', isolate) }}" anchor="cpu profile (table)" last="{{ true }}"></nav-menu>
+      <nav-menu link="{{ makeLink('/profiler-table', isolate) }}"
+                      anchor="cpu profile (table)" last="{{ true }}"></nav-menu>
       <nav-refresh callback="{{ refresh }}"></nav-refresh>
       <nav-refresh callback="{{ clearCpuProfile }}" label="Clear"></nav-refresh>
+      <nav-notify notifications="{{ app.notifications }}"></nav-notify>
     </nav-bar>
     <style>
       /* general */
       .well {
         background-color: #ECECEC;
         padding: 0.2em;
       }
       .center {
         align-items: center;
         justify-content: center;
@@ skipping 210 matching lines @@
     </style>
     <sample-buffer-control id="sampleBufferControl"></sample-buffer-control>
     <br>
     <stack-trace-tree-config id="stackTraceTreeConfig"></stack-trace-tree-config>
     <br>
     <cpu-profile-virtual-tree id="cpuProfileVirtualTree"></cpu-profile-virtual-tree>
   </template>
 </polymer-element>
 
 <script type="application/dart" src="cpu_profile.dart"></script>