diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index b353a48..338531f 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -726,6 +726,7 @@
             REQUIRES(kMainThreadContext);
     bool updateLayerSnapshots(VsyncId vsyncId, LifecycleUpdate& update, bool transactionsFlushed,
                               bool& out) REQUIRES(kMainThreadContext);
+    void updateLayerHistory(const frontend::LayerSnapshot& snapshot);
     LifecycleUpdate flushLifecycleUpdates() REQUIRES(kMainThreadContext);
 
     void updateInputFlinger();