Oilpan: Build fix after r196496

Source/modules/serviceworkers/ServiceWorker.h

Index: Source/modules/serviceworkers/ServiceWorker.h
diff --git a/Source/modules/serviceworkers/ServiceWorker.h b/Source/modules/serviceworkers/ServiceWorker.h
index df5408560190d05dd42bc4beb75b67f4fd1b277f..7dee8654988f492c9e07ecab861feb4dbfac7ba3 100644
--- a/Source/modules/serviceworkers/ServiceWorker.h
+++ b/Source/modules/serviceworkers/ServiceWorker.h
@@ -56,8 +56,10 @@ public:
 
     // Eager finalization needed to promptly release owned WebServiceWorker.
     EAGERLY_FINALIZE();
+#if ENABLE(OILPAN)
     // Override 'operator new' to enforce allocation of eagerly finalized object.
     DECLARE_EAGER_FINALIZATION_OPERATOR_NEW();
+#endif
 
     void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&);
     void terminate(ExceptionState&);