Added entry for thread information in the isolate view of the observatory. Current information show…

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 3052 matching lines @@
     _loaded = true;
   }
 
   String toString() => 'Sentinel($kind)';
   String get shortName => valueAsString;
 }
 
 class Thread extends ServiceObject implements M.Thread {
   M.ThreadKind get kind => _kind;
   M.ThreadKind _kind;
+  String get kindString => _kindString;
+  String _kindString;
   List<Zone> get zones => _zones;
   final List<Zone> _zones = new List<Zone>();
 
   Thread._empty(ServiceObjectOwner owner) : super._empty(owner);
 
   void _update(Map map, bool mapIsRef) {
-    String kindString = map['kind'];
+    String rawKind = map['kind'];
     List<Map> zoneList = map['zones'];
 
-    switch(kindString) {
+    switch(rawKind) {
       case "kUnknownTask":
         _kind = M.ThreadKind.unknownTask;
+        _kindString = 'unknown';
         break;
       case "kMutatorTask":
         _kind = M.ThreadKind.mutatorTask;
+        _kindString = 'mutator';
         break;
       case "kCompilerTask":
         _kind = M.ThreadKind.compilerTask;
+        _kindString = 'compiler';
         break;
       case "kSweeperTask":
         _kind = M.ThreadKind.sweeperTask;
+        _kindString = 'sweeper';
         break;
       case "kMarkerTask":
         _kind = M.ThreadKind.markerTask;
+        _kindString = 'marker';
         break;
       case "kFinalizerTask":
         _kind = M.ThreadKind.finalizerTask;
+        _kindString = 'finalizer';
         break;
       default:
         assert(false);
     }
     zones.clear();
     zoneList.forEach((zone) {
       int capacity = zone['capacity'];
       int used = zone['used'];
       zones.add(new Zone(capacity, used));
     });
@@ skipping 1373 matching lines @@
     var v = list[i];
     if ((v is Map) && _isServiceMap(v)) {
       list[i] = owner.getFromMap(v);
     } else if (v is List) {
       _upgradeList(v, owner);
     } else if (v is Map) {
       _upgradeMap(v, owner);
     }
   }
 }