diff --git a/services/surfaceflinger/BufferLayer.h b/services/surfaceflinger/BufferLayer.h
index d000d85..1d33a1f 100644
--- a/services/surfaceflinger/BufferLayer.h
+++ b/services/surfaceflinger/BufferLayer.h
@@ -186,6 +186,8 @@
     mutable renderengine::Texture mTexture;
 
     bool mRefreshPending{false};
+
+    Rect getBufferSize(const State& s) const override;
 };
 
 } // namespace android