diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index cd20bd1..ea40cb5 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1429,6 +1429,9 @@
             REQUIRES(mStateLock);
 
     std::atomic<ui::Transform::RotationFlags> mDefaultDisplayTransformHint;
+
+    void scheduleRegionSamplingThread();
+    void notifyRegionSamplingThread();
 };
 
 } // namespace android