Use ClassEntity in ClassHierarchyNode

pkg/compiler/lib/src/world.dart

 // Copyright (c) 2012, 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.
 
 library dart2js.world;
 
 import 'closure.dart' show ClosureClassElement, SynthesizedCallMethodElementX;
 import 'common/backend_api.dart' show BackendClasses;
 import 'common.dart';
 import 'constants/constant_system.dart';
@@ skipping 1004 matching lines @@
   /// relations of known classes.
   ///
   /// This method is only provided for testing. For queries on classes, use the
   /// methods defined in [ClosedWorld].
   ClassSet getClassSet(ClassElement cls) {
     return _classSets[cls.declaration];
   }
 
   void registerClosureClass(ClosureClassElement cls) {
     ClassHierarchyNode parentNode = getClassHierarchyNode(cls.superclass);
-    ClassHierarchyNode node =
-        _classHierarchyNodes[cls] = new ClassHierarchyNode(parentNode, cls);
+    ClassHierarchyNode node = _classHierarchyNodes[cls] =
+        new ClassHierarchyNode(parentNode, cls, cls.hierarchyDepth);
     for (ResolutionInterfaceType type in cls.allSupertypes) {
       ClassSet subtypeSet = getClassSet(type.element);
       subtypeSet.addSubtype(node);
     }
     _classSets[cls] = new ClassSet(node);
     _updateSuperClassHierarchyNodeForClass(node);
     node.isDirectlyInstantiated = true;
   }
 
   void _updateSuperClassHierarchyNodeForClass(ClassHierarchyNode node) {
@@ skipping 154 matching lines @@
       return getMightBePassedToApply(element.expression);
     }
     return functionsThatMightBePassedToApply.contains(element);
   }
 
   @override
   bool getCurrentlyKnownMightBePassedToApply(Element element) {
     return getMightBePassedToApply(element);
   }
 }