dart2dart: Fixed treatment of dynamic type literals in new IR.

sdk/lib/_internal/compiler/implementation/ir/const_expression.dart

 // Copyright (c) 2014, 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 const_expression;
 
 import '../dart2jslib.dart' show Constant, ListConstant, MapConstant,
     PrimitiveConstant, ConstructedConstant, TypeConstant, FunctionConstant,
     StringConstant;
 import '../dart_types.dart';
@@ skipping 72 matching lines @@
 class SymbolConstExp extends ConstExp {
   final String name;
 
   SymbolConstExp(this.name);
 
   accept(ConstExpVisitor visitor) => visitor.visitSymbol(this);
 }
 
 /// Type literal.
 class TypeConstExp extends ConstExp {
-  final TypeDeclarationElement element;
+  /// Either [DynamicType] or a raw [GenericType].
+  final DartType type;
 
-  TypeConstExp(this.element);
+  TypeConstExp(this.type) {
+    assert(type is GenericType || type is DynamicType);
+  }
 
   accept(ConstExpVisitor visitor) => visitor.visitType(this);
 }
 
 /// A constant local, top-level, or static variable.
 class VariableConstExp extends ConstExp {
   final VariableElement element;
 
   VariableConstExp(this.element);
 
@@ skipping 23 matching lines @@
   T visitFunction(FunctionConstExp exp);
 }
 
 /// Represents the declaration of a constant [element] with value [expression].
 class ConstDeclaration {
   final VariableElement element;
   final ConstExp expression;
 
   ConstDeclaration(this.element, this.expression);
 }