Update the navbar in the observatory

runtime/bin/vmservice/client/lib/src/observatory_elements/heap_profile.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_profile_element;
 
 import 'dart:html';
 import 'package:logging/logging.dart';
 import 'package:polymer/polymer.dart';
 import 'observatory_element.dart';
@@ skipping 204 matching lines @@
                v['old'][ALLOCATED_SINCE_GC_SIZE];
       case 5:
         return v['new'][ALLOCATED_BEFORE_GC_SIZE] +
                v['old'][ALLOCATED_BEFORE_GC_SIZE];
       case 6:
         return v['new'][LIVE_AFTER_GC_SIZE] + v['old'][LIVE_AFTER_GC_SIZE];
     }
     throw new FallThroughError();
   }
 
-  void refreshData(Event e, var detail, Node target) {
+  void refresh(var done) {
     var isolateId = app.locationManager.currentIsolateId();
     var isolate = app.isolateManager.getIsolate(isolateId);
     if (isolate == null) {
       Logger.root.info('No isolate found.');
       return;
     }
     var request = '/$isolateId/allocationprofile';
     app.requestManager.requestMap(request).then((Map response) {
       assert(response['type'] == 'AllocationProfile');
       profile = response;
     }).catchError((e, st) {
       Logger.root.info('$e $st');
-    });
+    }).whenComplete(done);
   }
 
   void resetAccumulator(Event e, var detail, Node target) {
     var isolateId = app.locationManager.currentIsolateId();
     var isolate = app.isolateManager.getIsolate(isolateId);
     if (isolate == null) {
       Logger.root.info('No isolate found.');
       return;
     }
     var request = '/$isolateId/allocationprofile/reset';
@@ skipping 34 matching lines @@
 
   @observable String formattedTotalCollectionTime(bool newSpace) {
     if (profile == null) {
       return '';
     }
     String space = newSpace ? 'new' : 'old';
     Map heap = profile['heaps'][space];
     return '${ObservatoryApplication.timeUnits(heap['time'])} secs';
   }
 }