Introduce TypedefEntity

pkg/compiler/lib/src/js_model/js_strategy.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.
 
 library dart2js.js_model.strategy;
 
 import '../closure.dart' show ClosureConversionTask;
 import '../common.dart';
 import '../common/tasks.dart';
 import '../common_elements.dart';
 import '../compiler.dart';
 import '../constants/constant_system.dart';
-import '../elements/elements.dart' show ClassElement, TypedefElement;
+import '../elements/elements.dart' show ClassElement;
 import '../elements/entities.dart';
 import '../elements/types.dart';
 import '../enqueue.dart';
 import '../io/source_information.dart';
 import '../js_emitter/sorter.dart';
 import '../js/js_source_mapping.dart';
 import '../js_backend/backend.dart';
 import '../js_backend/backend_usage.dart';
 import '../js_backend/constant_system_javascript.dart';
 import '../js_backend/interceptor_data.dart';
@@ skipping 266 matching lines @@
         rtiNeed: rtiNeed,
         classHierarchyNodes: classHierarchyNodes,
         classSets: classSets,
         implementedClasses: implementedClasses,
         liveNativeClasses: liveNativeClasses,
         liveInstanceMembers: liveInstanceMembers,
         assignedInstanceMembers: assignedInstanceMembers,
         mixinUses: mixinUses,
         typesImplementedBySubclasses: typesImplementedBySubclasses,
         // TODO(johnniwinther): Support this:
-        allTypedefs: new ImmutableEmptySet<TypedefElement>());
+        allTypedefs: new ImmutableEmptySet<TypedefEntity>());
   }
 
   @override
   Sorter get sorter {
     return _sorter ??= new KernelSorter(elementMap);
   }
 
   @override
   ClosureConversionTask get closureDataLookup => _closureDataLookup;
 
@@ skipping 42 matching lines @@
       CommonElements commonElements,
       ConstantSystem constantSystem,
       NativeData nativeData,
       InterceptorData interceptorData,
       BackendUsage backendUsage,
       this.rtiNeed,
       Set<ClassEntity> implementedClasses,
       Iterable<ClassEntity> liveNativeClasses,
       Iterable<MemberEntity> liveInstanceMembers,
       Iterable<MemberEntity> assignedInstanceMembers,
-      Set<TypedefElement> allTypedefs,
+      Set<TypedefEntity> allTypedefs,
       Map<ClassEntity, Set<ClassEntity>> mixinUses,
       Map<ClassEntity, Set<ClassEntity>> typesImplementedBySubclasses,
       Map<ClassEntity, ClassHierarchyNode> classHierarchyNodes,
       Map<ClassEntity, ClassSet> classSets})
       : super(
             elementEnvironment,
             dartTypes,
             commonElements,
             constantSystem,
             nativeData,
             interceptorData,
             backendUsage,
             implementedClasses,
             liveNativeClasses,
             liveInstanceMembers,
             assignedInstanceMembers,
             allTypedefs,
             mixinUses,
             typesImplementedBySubclasses,
             classHierarchyNodes,
             classSets);
 
   @override
   void registerClosureClass(ClassElement cls) {
     throw new UnimplementedError('JsClosedWorld.registerClosureClass');
   }
 }