diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 6dd91ac..9566819 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -209,6 +209,7 @@
     virtual status_t                    unfreezeDisplay(DisplayID dpy, uint32_t flags);
     virtual int                         setOrientation(DisplayID dpy, int orientation, uint32_t flags);
     virtual void                        signal() const;
+    virtual bool                        authenticateSurface(const sp<ISurface>& surface) const;
 
     virtual status_t captureScreen(DisplayID dpy,
             sp<IMemoryHeap>* heap,