Make sdr white point do a thing

Bug: 182312559
Test: SilkFX prototype changes

Change-Id: Ieca0e4c8e2229d14aac460945702d23759d208e9
diff --git a/services/surfaceflinger/SurfaceFlingerProperties.h b/services/surfaceflinger/SurfaceFlingerProperties.h
index b19d216..039d316 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.h
+++ b/services/surfaceflinger/SurfaceFlingerProperties.h
@@ -102,6 +102,8 @@
 
 bool enable_layer_caching(bool defaultValue);
 
+bool enable_sdr_dimming(bool defaultValue);
+
 } // namespace sysprop
 } // namespace android
 #endif // SURFACEFLINGERPROPERTIES_H_