Support typedef type literals

pkg/compiler/lib/src/kernel/element_map.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.
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../closure.dart';
 import '../common.dart';
 import '../constants/values.dart';
 import '../common_elements.dart';
@@ skipping 46 matching lines @@
   /// Returns the [ConstructorEntity] corresponding to the generative or factory
   /// constructor [node].
   ConstructorEntity getConstructor(ir.Member node);
 
   /// Returns the [FieldEntity] corresponding to the field [node].
   FieldEntity getField(ir.Field node);
 
   /// Returns the [ClassEntity] corresponding to the class [node].
   ClassEntity getClass(ir.Class node);
 
+  /// Returns the [TypedefType] corresponding to raw type of the typedef [node].
+  TypedefType getTypedefType(ir.Typedef node);
+
   /// Returns the super [MemberEntity] for a super invocation, get or set of
   /// [name] from the member [context].
   ///
   /// The IR doesn't always resolve super accesses to the corresponding
   /// [target]. If not, the target is computed using [name] and [setter] from
   /// the enclosing class of [context].
   MemberEntity getSuperMember(ir.Member context, ir.Name name, ir.Member target,
       {bool setter: false});
 
   /// Returns the [Name] corresponding to [name].
@@ skipping 368 matching lines @@
       uri = Uri.parse(node.location.file);
       break;
     }
     node = node.parent;
   }
   if (uri != null) {
     return new SourceSpan(uri, offset, offset + 1);
   }
   return null;
 }