| Index: dart/sdk/lib/_internal/compiler/implementation/js_backend/native_emitter.dart | 
| diff --git a/dart/sdk/lib/_internal/compiler/implementation/js_backend/native_emitter.dart b/dart/sdk/lib/_internal/compiler/implementation/js_backend/native_emitter.dart | 
| index 67401f6bd0cc1c5eb76ab6fc2ce57b30a7d367c2..1153082b60f4f705875a3ed05f2759fa59bd027d 100644 | 
| --- a/dart/sdk/lib/_internal/compiler/implementation/js_backend/native_emitter.dart | 
| +++ b/dart/sdk/lib/_internal/compiler/implementation/js_backend/native_emitter.dart | 
| @@ -339,7 +339,7 @@ class NativeEmitter { | 
| String superName = backend.namer.getNameOfClass(superclass); | 
|  | 
| ClassBuilder builder = new ClassBuilder(); | 
| -    emitter.emitClassConstructor(classElement, builder); | 
| +    emitter.emitClassConstructor(classElement, builder, null); | 
| emitter.emitSuper(superName, builder); | 
| bool hasFields = emitter.emitFields( | 
| classElement, builder, superName, classIsNative: true); | 
|  |