Visual refresh of allocation profile page

runtime/bin/vmservice/client/lib/src/elements/code_view.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library code_view_element;
 
 import 'dart:html';
 import 'observatory_element.dart';
 import 'package:observatory/service.dart';
 import 'package:polymer/polymer.dart';
 
 @CustomTag('code-view')
 class CodeViewElement extends ObservatoryElement {
   @published Code code;
   CodeViewElement.created() : super.created();
 
-  void enteredView() {
-    super.enteredView();
+  @override
+  void attached() {
+    super.attached();
     if (code == null) {
       return;
     }
     code.load().then((Code c) {
       c.loadScript();
     });
   }
 
   void refresh(var done) {
     code.reload().whenComplete(done);
@@ skipping 21 matching lines @@
   }
 
   void mouseOut(Event e, var detail, Node target) {
     var jt = _findJumpTarget(target);
     if (jt == null) {
       return;
     }
     jt.classes.remove('highlight');
   }
 }