Converted Observatory debugger elements

runtime/observatory/lib/src/service/object.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.
 
 part of service;
 
 // Some value smaller than the object ring, so requesting a large array
 // doesn't result in an expired ref because the elements lapped it in the
 // object ring.
 const int kDefaultFieldLimit = 100;
@@ skipping 2995 matching lines @@
   void _update(ObservableMap map, bool mapIsRef) {
     // Extract full properties.
     _upgradeCollection(map, isolate);
 
     kind = stringToSentinelKind(map['kind']);
     valueAsString = map['valueAsString'];
     _loaded = true;
   }
 
   String toString() => 'Sentinel($kind)';
+  String get shortName => valueAsString;
 }
 
 class Field extends HeapObject implements M.Field {
   // Library or Class.
   @observable HeapObject dartOwner;
   @observable Library library;
   @observable Instance declaredType;
   @observable bool isStatic;
   @observable bool isFinal;
   @observable bool isConst;
@@ skipping 1366 matching lines @@
     var v = list[i];
     if ((v is ObservableMap) && _isServiceMap(v)) {
       list[i] = owner.getFromMap(v);
     } else if (v is ObservableList) {
       _upgradeObservableList(v, owner);
     } else if (v is ObservableMap) {
       _upgradeObservableMap(v, owner);
     }
   }
 }