Introduce TypedefEntity

pkg/compiler/lib/src/universe/resolution_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;
 
 abstract class ResolutionWorldBuilder implements WorldBuilder, OpenWorld {
   /// Set of all local functions in the program. Used by the mirror tracking
   /// system to find all live closure instances.
   Iterable<Local> get localFunctions;
@@ skipping 341 matching lines @@
   final SelectorConstraintsStrategy selectorConstraintsStrategy;
 
   bool hasRuntimeTypeSupport = false;
   bool hasIsolateSupport = false;
   bool hasFunctionApplySupport = false;
 
   bool _closed = false;
   ClosedWorld _closedWorldCache;
   final Set<MemberEntity> _liveInstanceMembers = new Set<MemberEntity>();
 
-  final Set<TypedefElement> _allTypedefs = new Set<TypedefElement>();
+  final Set<TypedefEntity> _allTypedefs = new Set<TypedefEntity>();
 
   final Map<ClassEntity, Set<ClassEntity>> _mixinUses =
       new Map<ClassEntity, Set<ClassEntity>>();
 
   // We keep track of subtype and subclass relationships in four
   // distinct sets to make class hierarchy analysis faster.
   final Map<ClassEntity, ClassHierarchyNode> _classHierarchyNodes =
       <ClassEntity, ClassHierarchyNode>{};
   final Map<ClassEntity, ClassSet> _classSets = <ClassEntity, ClassSet>{};
 
@@ skipping 396 matching lines @@
       return usage;
     });
   }
 
   /// Returns an iterable over all mixin applications that mixin [cls].
   Iterable<ClassEntity> allMixinUsesOf(ClassEntity cls) {
     Iterable<ClassEntity> uses = _mixinUses[cls];
     return uses != null ? uses : const <ClassEntity>[];
   }
 
-  void registerTypedef(TypedefElement typdef) {
+  void registerTypedef(TypedefEntity typdef) {
     _allTypedefs.add(typdef);
   }
 
   void registerMixinUse(
       covariant ClassEntity mixinApplication, covariant ClassEntity mixin) {
     // TODO(johnniwinther): Add map restricted to live classes.
     // We don't support patch classes as mixin.
     Set<ClassEntity> users =
         _mixinUses.putIfAbsent(mixin, () => new Set<ClassEntity>());
     users.add(mixinApplication);
@@ skipping 218 matching lines @@
         typesImplementedBySubclasses: typesImplementedBySubclasses,
         classHierarchyNodes: _classHierarchyNodes,
         classSets: _classSets);
   }
 
   @override
   void registerClass(ClassEntity cls) {
     throw new UnimplementedError('KernelResolutionWorldBuilder.registerClass');
   }
 }