diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index e44ccf8..c63399e 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -435,6 +435,11 @@
     void setVisibleNonTransparentRegion(const Region& visibleNonTransparentRegion);
 
     /*
+     * Clear the visible, covered, and non-transparent regions.
+     */
+    void clearVisibilityRegions();
+
+    /*
      * latchBuffer - called each time the screen is redrawn and returns whether
      * the visible regions need to be recomputed (this is a fairly heavy
      * operation, so this should be set only if needed). Typically this is used