Support typedef type literals

pkg/compiler/lib/src/enqueue.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.enqueue;
 
 import 'dart:collection' show Queue;
 
 import 'common/tasks.dart' show CompilerTask;
 import 'common/work.dart' show WorkItem;
 import 'common.dart';
 import 'common_elements.dart' show ElementEnvironment;
 import 'constants/values.dart';
 import 'compiler.dart' show Compiler;
 import 'options.dart';
 import 'elements/entities.dart';
-import 'elements/resolution_types.dart' show ResolutionTypedefType;
 import 'elements/types.dart';
 import 'js_backend/enqueuer.dart';
 import 'universe/world_builder.dart';
 import 'universe/use.dart'
     show
         ConstantUse,
         DynamicUse,
         StaticUse,
         StaticUseKind,
         TypeUse,
@@ skipping 332 matching lines @@
       case TypeUseKind.CATCH_TYPE:
         _registerIsCheck(type);
         break;
       case TypeUseKind.CHECKED_MODE_CHECK:
         if (_options.enableTypeAssertions) {
           _registerIsCheck(type);
         }
         break;
       case TypeUseKind.TYPE_LITERAL:
         if (type.isTypedef) {
-          ResolutionTypedefType typedef = type;
+          TypedefType typedef = type;
           worldBuilder.registerTypedef(typedef.element);
         }
         break;
     }
   }
 
   void _registerIsCheck(DartType type) {
     _worldBuilder.registerIsCheck(type);
   }
 
@@ skipping 215 matching lines @@
   final Entity element;
   final DeferredActionFunction action;
 
   DeferredAction(this.element, this.action);
 }
 
 /// Interface for creating work items for enqueued member entities.
 abstract class WorkItemBuilder {
   WorkItem createWorkItem(covariant MemberEntity entity);
 }