diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 6546973..ca5954c 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -591,6 +591,9 @@
             const sp<Layer>& parent,
             bool addToCurrentState);
 
+    // Traverse through all the layers and compute and cache its bounds.
+    void computeLayerBounds();
+
     /* ------------------------------------------------------------------------
      * Boot animation, on/off animations and screen capture
      */