Access NativeData only through ClosedWorld

pkg/compiler/lib/src/js_emitter/interceptor_stub_generator.dart

Index: pkg/compiler/lib/src/js_emitter/interceptor_stub_generator.dart
diff --git a/pkg/compiler/lib/src/js_emitter/interceptor_stub_generator.dart b/pkg/compiler/lib/src/js_emitter/interceptor_stub_generator.dart
index aa2eb257fcabf0f02953a0ab72d67d626aadeb73..47ea5c4b31d00bfdf2ef8a021a665f23dc897bfa 100644
--- a/pkg/compiler/lib/src/js_emitter/interceptor_stub_generator.dart
+++ b/pkg/compiler/lib/src/js_emitter/interceptor_stub_generator.dart
@@ -34,7 +34,6 @@ class InterceptorStubGenerator {
   final NativeCodegenEnqueuer _nativeCodegenEnqueuer;
   final JavaScriptConstantCompiler _constants;
   final Namer _namer;
-  final NativeData _nativeData;
   final InterceptorData _interceptorData;
   final OneShotInterceptorData _oneShotInterceptorData;
   final CustomElementsCodegenAnalysis _customElementsCodegenAnalysis;
@@ -48,13 +47,14 @@ class InterceptorStubGenerator {
       this._nativeCodegenEnqueuer,
       this._constants,
       this._namer,
-      this._nativeData,
       this._interceptorData,
       this._oneShotInterceptorData,
       this._customElementsCodegenAnalysis,
       this._codegenWorldBuilder,
       this._closedWorld);
 
+  NativeData get _nativeData => _closedWorld.nativeData;
+
   Emitter get _emitter => _emitterTask.emitter;
 
   jsAst.Expression generateGetInterceptorMethod(Set<ClassEntity> classes) {