Handle instantiation of native classes in closed_world2_test

pkg/compiler/lib/src/frontend_strategy.dart

Index: pkg/compiler/lib/src/frontend_strategy.dart
diff --git a/pkg/compiler/lib/src/frontend_strategy.dart b/pkg/compiler/lib/src/frontend_strategy.dart
index 28870a02de44193ebe67f2dad1ad26103033e5f0..d0f4d4b7aba20a05a7193b17bac8b90b85728f5e 100644
--- a/pkg/compiler/lib/src/frontend_strategy.dart
+++ b/pkg/compiler/lib/src/frontend_strategy.dart
@@ -11,6 +11,7 @@ import 'elements/entities.dart';
 import 'environment.dart';
 import 'js_backend/native_data.dart';
 import 'library_loader.dart';
+import 'native/resolver.dart';
 import 'serialization/task.dart';
 import 'patch_parser.dart';
 import 'resolved_uri_translator.dart';
@@ -36,6 +37,9 @@ abstract class FrontEndStrategy {
 
   /// Returns the [AnnotationProcessor] for this strategy.
   AnnotationProcessor get annotationProcesser;
+
+  /// Creates the [NativeClassFinder] for this strategy.
+  NativeClassFinder createNativeClassResolver(NativeBasicData nativeBasicData);
 }
 
 /// Class that performs the mechanics to investigate annotations in the code.