diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 5a8153e..6e1d865 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -644,6 +644,13 @@
             REQUIRES(mStateLock);
     virtual void commitTransactionLocked();
 
+    // Used internally by computeLayerBounds() to gets the clip rectangle to use for the
+    // root layers on a particular display in layer-coordinate space. The
+    // layers (and effectively their children) will be clipped against this
+    // rectangle. The base behavior is to clip to the visible region of the
+    // display.
+    virtual FloatRect getLayerClipBoundsForDisplay(const DisplayDevice&) const;
+
 private:
     /* ------------------------------------------------------------------------
      * Layer management