Update the navbar in the observatory

runtime/bin/vmservice/client/lib/src/observatory/isolate.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.
 
 part of observatory;
 
 
 /// State for a running isolate.
 class Isolate extends Observable {
   static ObservatoryApplication _application;
 
   @observable Profile profile;
   @observable final Map<String, Script> scripts =
       toObservable(new Map<String, Script>());
   @observable final List<Code> codes = new List<Code>();
   @observable String id;
   @observable String name;
+  @observable String vmName;
   @observable Map entry;
   @observable String rootLib;
   @observable final Map<String, double> timers =
       toObservable(new Map<String, double>());
 
   @observable int newHeapUsed = 0;
   @observable int oldHeapUsed = 0;
 
   @observable Map topFrame = null;
   @observable String fileAndLine = null;
-
-  Isolate.fromId(this.id) : name = '' {}
-
+  
+  Isolate.fromId(this.id) : name = 'isolate' {}
+  
   Isolate.fromMap(Map map)
       : id = map['id'], name = map['name'] {
   }
 
-  void refresh() {
-    var request = '/$id/';
-    _application.requestManager.requestMap(request).then((map) {
-        update(map);
-      }).catchError((e, trace) {
-          Logger.root.severe('Error while updating isolate summary: $e\n$trace');
-      });
+  Future refresh() {
+     var request = '/$id/';
+     return _application.requestManager.requestMap(request).then((map) {
+         update(map);
+       }).catchError((e, trace) {
+           Logger.root.severe('Error while updating isolate summary: $e\n$trace');
+       });
   }
 
   void update(Map map) {
     if (map['type'] != 'Isolate') {
       Logger.root.severe('Unexpected message type in Isolate.update: ${map["type"]}');
       return;
     }
-    if (map['name'] == null ||
-        map['rootLib'] == null ||
+    if (map['rootLib'] == null ||
         map['timers'] == null ||
         map['heap'] == null) {
       Logger.root.severe("Malformed 'Isolate' response: $map");
       return;
     }
-    name = map['name'];
     rootLib = map['rootLib']['id'];
+    vmName = map['name'];
     if (map['entry'] != null) {
       entry = map['entry'];
+      name = entry['name'];
+    } else {
+      // fred
+      name = 'root isolate';
     }
     if (map['topFrame'] != null) {
       topFrame = map['topFrame'];
     }
 
     var timerMap = {};
     map['timers'].forEach((timer) {
         timerMap[timer['name']] = timer['time'];
       });
     timers['total'] = timerMap['time_total_runtime'];
@@ skipping 42 matching lines @@
       var script = scripts[id];
       if (script == null) {
         script = new Script.fromMap(coverage['script']);
         scripts[id] = script;
       }
       assert(script != null);
       script._processCoverageHits(coverage['hits']);
     }
   }
 }