dart2js: add special getter to Closure class in new emitter.

pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart

Index: pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart b/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
index 0193ba25b95472978af13d76329126726cdc2a3a..c5f1621ba76c8e43018fae1c94aedba88f9b079c 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
@@ -44,14 +44,6 @@ class ClassEmitter extends CodeEmitterHelper {
     emitRuntimeTypeInformation(cls, builder);
     emitNativeInfo(cls, builder);
 
-    if (classElement == backend.closureClass) {
-      // We add a special getter here to allow for tearing off a closure from
-      // itself.
-      String name = namer.getMappedInstanceName(Compiler.CALL_OPERATOR_NAME);
-      jsAst.Fun function = js('function() { return this; }');
-      builder.addProperty(namer.getterNameFromAccessorName(name), function);
-    }
-
     emitClassBuilderWithReflectionData(cls, builder, enclosingBuilder);
   }
   /**