Send allocation stats with each class and show in class view.

runtime/bin/vmservice/client/lib/src/service/object.dart

Index: runtime/bin/vmservice/client/lib/src/service/object.dart
===================================================================
--- runtime/bin/vmservice/client/lib/src/service/object.dart	(revision 37499)
+++ runtime/bin/vmservice/client/lib/src/service/object.dart	(working copy)
@@ -1109,6 +1109,12 @@
       superClass._addToChildren(this);
     }
     error = map['error'];
+    
+    var allocationStats = map['allocationStats'];
+    if (allocationStats != null) {
+      newSpace.update(allocationStats['new']);
+      oldSpace.update(allocationStats['old']);
+    }
   }
 
   void _addToChildren(Class cls) {