fix "show screen update" debug option.

Change-Id: I7d8b24124768b5f7d59d3bb0b019e9baaa0dfc4f
NOTE: from now on, this also disable the h/w composer
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 1738238..d68e484 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -278,6 +278,7 @@
             void        handleRepaint();
             void        postFramebuffer();
             void        composeSurfaces(const Region& dirty);
+            void        repaintEverything();
 
 
             ssize_t     addClientLayer(const sp<Client>& client,