Use List instead of Link in the type system.

sdk/lib/_internal/compiler/implementation/dart_backend/dart_codegen.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 dart_codegen;
 
 import 'dart_tree.dart' as tree;
 import 'dart_printer.dart';
 import 'dart_tree_printer.dart' show TreePrinter;
 import '../tree/tree.dart' as frontend;
@@ skipping 391 matching lines @@
         typeArgument: emitOptionalType(exp.type.typeArguments.single));
   }
 
   Expression visitLiteralMap(tree.LiteralMap exp) {
     List<LiteralMapEntry> entries = new List<LiteralMapEntry>.generate(
         exp.values.length,
         (i) => new LiteralMapEntry(visitExpression(exp.keys[i]),
                                    visitExpression(exp.values[i])));
     List<TypeAnnotation> typeArguments = exp.type.treatAsRaw
         ? null
-        : exp.type.typeArguments.mapToList(emitType);
+        : exp.type.typeArguments.map(emitType).toList(growable: false);
     return new LiteralMap(entries, typeArguments: typeArguments);
   }
 
   Expression visitTypeOperator(tree.TypeOperator exp) {
     return new TypeOperator(visitExpression(exp.receiver),
                             exp.operator,
                             emitType(exp.type));
   }
 
   List<Argument> emitArguments(tree.Invoke exp) {
@@ skipping 112 matching lines @@
 
   Expression visitVariable(tree.Variable exp) {
     return new Identifier(getVariableName(exp))
                ..element = exp.element;
   }
 
   TypeAnnotation emitType(DartType type) {
     if (type is GenericType) {
       return new TypeAnnotation(
           type.element.name,
-          type.typeArguments.mapToList(emitType, growable:false))
+          type.typeArguments.map(emitType).toList(growable:false))
           ..dartType = type;
     } else if (type is VoidType) {
       return new TypeAnnotation('void')
           ..dartType = type;
     } else if (type is TypeVariableType) {
       return new TypeAnnotation(type.name)
           ..dartType = type;
     } else if (type is DynamicType) {
       return new TypeAnnotation("dynamic")
           ..dartType = type;
@@ skipping 34 matching lines @@
         typeArgument: parent.emitOptionalType(exp.type.typeArguments.single));
   }
 
   Expression visitMap(MapConstExp exp) {
     List<LiteralMapEntry> entries = new List<LiteralMapEntry>.generate(
         exp.values.length,
         (i) => new LiteralMapEntry(visit(exp.keys[i]),
                                    visit(exp.values[i])));
     List<TypeAnnotation> typeArguments = exp.type.treatAsRaw
         ? null
-        : exp.type.typeArguments.mapToList(parent.emitType);
+        : exp.type.typeArguments.map(parent.emitType).toList();
     return new LiteralMap(entries, isConst: true, typeArguments: typeArguments);
   }
 
   Expression visitConstructor(ConstructorConstExp exp) {
     int positionalArgumentCount = exp.selector.positionalArgumentCount;
     List<Argument> args = new List<Argument>.generate(
         positionalArgumentCount,
         (i) => visit(exp.arguments[i]));
     for (int i = 0; i < exp.selector.namedArgumentCount; ++i) {
       args.add(new NamedArgument(exp.selector.namedArguments[i],
@@ skipping 28 matching lines @@
     return new Identifier(name)
                ..element = exp.element;
   }
 
   Expression visitFunction(FunctionConstExp exp) {
     return new Identifier(exp.element.name)
                ..element = exp.element;
   }
 
 }