Extract OrderedTypeSetBuilderBase from OrderedTypeSetBuilder

tests/compiler/dart2js/serialization/test_helper.dart

 // Copyright (c) 2016, 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.serialization_test_helper;
 
 import 'dart:collection';
 import 'package:compiler/src/common/resolution.dart';
 import 'package:compiler/src/constants/expressions.dart';
 import 'package:compiler/src/constants/values.dart';
@@ skipping 269 matching lines @@
   } else {
     return check(object1, object2, property, type1, type2,
         (a, b) => const TypeEquivalence(const CheckStrategy()).visit(a, b));
   }
 }
 
 /// Checks the pair-wise equivalence of the types in [list1] and [list2].
 ///
 /// Uses [object1], [object2] and [property] to provide context for failures.
 bool checkTypeLists(Object object1, Object object2, String property,
-    List<ResolutionDartType> list1, List<ResolutionDartType> list2) {
+    List<DartType> list1, List<DartType> list2) {
   return checkListEquivalence(
       object1, object2, property, list1, list2, checkTypes);
 }
 
 /// Checks the equivalence of [exp1] and [exp2].
 ///
 /// Uses [object1], [object2] and [property] to provide context for failures.
 bool checkConstants(Object object1, Object object2, String property,
     ConstantExpression exp1, ConstantExpression exp2) {
   if (identical(exp1, exp2)) return true;
@@ skipping 520 matching lines @@
               strategy.testTypeLists(a, b, 'namedParameterTypes',
                   aType.namedParameterTypes, b.namedParameterTypes);
         }
         return false;
       default:
         throw new UnsupportedError('Unsupported equivalence: '
             '$a (${a.runtimeType}) vs $b (${b.runtimeType})');
     }
   }
 }