Implement subtype relation for kernel based elements.

pkg/compiler/lib/src/serialization/modelz.dart

 // Copyright (c) 2015, 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.
 
 /// Implementation of the element model used for deserialiation.
 ///
 /// These classes are created by [ElementDeserializer] triggered by the
 /// [Deserializer].
 
 library dart2js.serialization.modelz;
@@ skipping 947 matching lines @@
             toLink(_decoder.getTypes(Key.INTERFACES, isOptional: true));
         List<ResolutionInterfaceType> mixins =
             _decoder.getTypes(Key.MIXINS, isOptional: true);
         for (ResolutionInterfaceType mixin in mixins) {
           MixinApplicationElement mixinElement =
               new UnnamedMixinApplicationElementZ(this, supertype, mixin);
           supertype = mixinElement.thisType
               .subst(typeVariables, mixinElement.typeVariables);
         }
         _supertype = supertype;
-        _allSupertypesAndSelf = new OrderedTypeSetBuilder(this)
+        _allSupertypesAndSelf = new ResolutionOrderedTypeSetBuilder(this)
             .createOrderedTypeSet(_supertype, _interfaces);
         _callType = _decoder.getType(Key.CALL_TYPE, isOptional: true);
       }
     }
   }
 
   @override
   accept(ElementVisitor visitor, arg) {
     return visitor.visitClassElement(this, arg);
   }
@@ skipping 187 matching lines @@
   }
 
   @override
   accept(ElementVisitor visitor, arg) {
     return visitor.visitMixinApplicationElement(this, arg);
   }
 
   @override
   OrderedTypeSet get allSupertypesAndSelf {
     if (_allSupertypesAndSelf == null) {
-      _allSupertypesAndSelf = new OrderedTypeSetBuilder(this)
+      _allSupertypesAndSelf = new ResolutionOrderedTypeSetBuilder(this)
           .createOrderedTypeSet(supertype, interfaces);
     }
     return _allSupertypesAndSelf;
   }
 
   @override
   Element get enclosingElement => subclass.enclosingElement;
 
   @override
   bool get isObject => false;
@@ skipping 1224 matching lines @@
   }
 
   @override
   Node get node => throw new UnsupportedError('${this}.node');
 
   @override
   bool get hasNode => false;
 
   String toString() => 'MetadataAnnotationZ(${constant.toDartText()})';
 }