Visual refresh of allocation profile page

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

 // Copyright (c) 2014, 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 heap_map_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'dart:math';
 import 'observatory_element.dart';
@@ skipping 53 matching lines @@
   // Many browsers will not display a very tall canvas.
   // TODO(koda): Improve interface for huge heaps.
   static const _MAX_CANVAS_HEIGHT = 6000;
 
   @observable String status;
   @published ServiceMap fragmentation;
 
   HeapMapElement.created() : super.created() {
   }
 
-  void enteredView() {
-    super.enteredView();
+  @override
+  void attached() {
+    super.attached();
     _fragmentationCanvas = shadowRoot.querySelector("#fragmentation");
     _fragmentationCanvas.onMouseMove.listen(_handleMouseMove);
     _fragmentationCanvas.onMouseDown.listen(_handleClick);
   }
 
   // Encode color as single integer, to enable using it as a map key.
   int _packColor(Iterable<int> color) {
     int packed = 0;
     for (var component in color) {
       packed = packed * 256 + component;
@@ skipping 129 matching lines @@
     }
     fragmentation.isolate.get('heapmap').then((ServiceMap response) {
       assert(response['type'] == 'HeapMap');
       fragmentation = response;
     }).catchError((e, st) {
       Logger.root.info('$e $st');
     }).whenComplete(done);
   }
 
   void fragmentationChanged(oldValue) {
-    // Async, in case enteredView has not yet run (observed in JS version).
+    // Async, in case attached has not yet run (observed in JS version).
     new Future(() {
       _updateFragmentationData();
     });
   }
 }