All strong mode cleaning of dart2js.

tests/compiler/dart2js/kernel/closed_world_from_dill_test.dart

Index: tests/compiler/dart2js/kernel/closed_world_from_dill_test.dart
diff --git a/tests/compiler/dart2js/kernel/closed_world_from_dill_test.dart b/tests/compiler/dart2js/kernel/closed_world_from_dill_test.dart
index 5fe44d921ba9a0e911afaa9e9e3a07fc3a916d32..c2daf1384d3fd25a6cc0355f38e36f8dd45e6a8b 100644
--- a/tests/compiler/dart2js/kernel/closed_world_from_dill_test.dart
+++ b/tests/compiler/dart2js/kernel/closed_world_from_dill_test.dart
@@ -13,7 +13,6 @@ import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/commandline_options.dart';
 import 'package:compiler/src/common.dart';
 import 'package:compiler/src/compiler.dart';
-import 'package:compiler/src/elements/resolution_types.dart';
 import 'package:compiler/src/elements/types.dart';
 import 'package:compiler/src/enqueue.dart';
 import 'package:compiler/src/kernel/element_map.dart';
@@ -145,7 +144,7 @@ Future<ResultKind> mainInternal(List<String> args,
   checkResolutionEnqueuers(closedWorld1.backendUsage, closedWorld2.backendUsage,
       enqueuer1, enqueuer2,
       elementEquivalence: (a, b) => equivalence.entityEquivalence(a, b),
-      typeEquivalence: (ResolutionDartType a, DartType b) {
+      typeEquivalence: (DartType a, DartType b) {
         return equivalence.typeEquivalence(unalias(a), b);
       },
       elementFilter: elementFilter,