--- ui/events/event_switches.h.orig	2022-02-07 13:39:41 UTC
+++ ui/events/event_switches.h
@@ -12,7 +12,7 @@ namespace switches {
 
 EVENTS_BASE_EXPORT extern const char kCompensateForUnstablePinchZoom[];
 
-#if defined(OS_LINUX) || defined(OS_CHROMEOS)
+#if defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_BSD)
 EVENTS_BASE_EXPORT extern const char kTouchDevices[];
 EVENTS_BASE_EXPORT extern const char kPenDevices[];
 #endif