Use ClassEntity in ClassHierarchyNode

pkg/compiler/lib/src/universe/element_world_builder.dart

 // Copyright (c) 2017, 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 world_builder;
 
 /// [ResolutionEnqueuerWorldBuilder] based on the [Element] model.
 class ElementResolutionWorldBuilder extends ResolutionWorldBuilderBase {
   /// Used for testing the new more precise computation of instantiated types
   /// and classes.
@@ skipping 111 matching lines @@
     super._processInstantiatedClassMember(cls, member, memberUsed);
   }
 
   ClassHierarchyNode _ensureClassHierarchyNode(ClassElement cls) {
     cls = cls.declaration;
     return _classHierarchyNodes.putIfAbsent(cls, () {
       ClassHierarchyNode parentNode;
       if (cls.superclass != null) {
         parentNode = _ensureClassHierarchyNode(cls.superclass);
       }
-      return new ClassHierarchyNode(parentNode, cls);
+      return new ClassHierarchyNode(parentNode, cls, cls.hierarchyDepth);
     });
   }
 
   ClassSet _ensureClassSet(ClassElement cls) {
     cls = cls.declaration;
     return _classSets.putIfAbsent(cls, () {
       ClassHierarchyNode node = _ensureClassHierarchyNode(cls);
       ClassSet classSet = new ClassSet(node);
 
       for (ResolutionInterfaceType type in cls.allSupertypes) {
@@ skipping 94 matching lines @@
         classSets: _classSets);
   }
 
   @override
   void registerMixinUse(
       MixinApplicationElement mixinApplication, ClassElement mixin) {
     assert(mixin.isDeclaration);
     super.registerMixinUse(mixinApplication, mixin);
   }
 }