Temporarily disabling JSON generation for Zone statistics to resolve flakiness in tests until a bet…

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 3096 matching lines @@
   String _kindString;
   int get memoryHighWatermark => _memoryHighWatermark;
   int _memoryHighWatermark;
   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 rawKind = map['kind'];
-    List<Map> zoneList = map['zones'];
 
     switch(rawKind) {
       case "kUnknownTask":
         _kind = M.ThreadKind.unknownTask;
         _kindString = 'unknown';
         break;
       case "kMutatorTask":
         _kind = M.ThreadKind.mutatorTask;
         _kindString = 'mutator';
         break;
@@ skipping 11 matching lines @@
         break;
       case "kFinalizerTask":
         _kind = M.ThreadKind.finalizerTask;
         _kindString = 'finalizer';
         break;
       default:
         assert(false);
     }
 
     _memoryHighWatermark = int.parse(map['_memoryHighWatermark']);
-
-    zones.clear();
-    zoneList.forEach((zone) {
-      int capacity = zone['capacity'];
-      int used = zone['used'];
-      zones.add(new Zone(capacity, used));
-    });
   }
 }
 
 class Zone implements M.Zone {
   int get capacity => _capacity;
   int _capacity;
   int get used => _used;
   int _used;
 
   Zone(this._capacity, this._used);
@@ skipping 1407 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);
     }
   }
 }