Use List instead of Link in the type system.

sdk/lib/_internal/compiler/implementation/dart_backend/renamer.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.
 
 part of dart_backend;
 
 Comparator get _compareNodes =>
     compareBy((n) => n.getBeginToken().charOffset);
 
 typedef String _Renamer(Renamable renamable);
@@ skipping 75 matching lines @@
     }
   }
 
   String renameType(DartType type, Function renameElement) {
     if (type.isDynamic) return 'dynamic';
     // TODO(smok): Do not rename type if it is in platform library or
     // js-helpers.
     StringBuffer result = new StringBuffer(renameElement(type.element));
     if (type is GenericType && !type.treatAsRaw) {
       result.write('<');
-      Link<DartType> argumentsLink = type.typeArguments;
-      result.write(renameType(argumentsLink.head, renameElement));
-      for (Link<DartType> link = argumentsLink.tail; !link.isEmpty;
-           link = link.tail) {
+      List<DartType> arguments = type.typeArguments;
+      result.write(renameType(arguments.first, renameElement));
+      for (int index = 1; index < arguments.length; index++) {
         result.write(',');
-        result.write(renameType(link.head, renameElement));
+        result.write(renameType(arguments[index], renameElement));
       }
       result.write('>');
     }
     return result.toString();
   }
 
   String renameConstructor(Element element, ConstructorPlaceholder placeholder,
       Function renameString, Function renameElement) {
     assert(element.isConstructor);
     StringBuffer result = new StringBuffer();
@@ skipping 243 matching lines @@
   MinifyingGenerator();
 
   String generate(bool isForbidden(String name)) {
     String result;
     do {
       result = generateMiniId(index++);
     } while (isForbidden(result));
     return result;
   }
 }