Don't handle NaturalScroll in Chrome but pass it to CMT instead

ui/events/x/events_x.cc

Index: ui/events/x/events_x.cc
diff --git a/ui/events/x/events_x.cc b/ui/events/x/events_x.cc
index 9fec9df2bf9bcf18d5f9947a3d96e0c4229a8662..bf8b04ee58b0cde6d9036d3d5840b84869b8672a 100644
--- a/ui/events/x/events_x.cc
+++ b/ui/events/x/events_x.cc
@@ -667,14 +667,6 @@ bool GetGestureTimes(const base::NativeEvent& native_event,
   return true;
 }
 
-void SetNaturalScroll(bool enabled) {
-  DeviceDataManager::GetInstance()->set_natural_scroll_enabled(enabled);
-}
-
-bool IsNaturalScrollEnabled() {
-  return DeviceDataManager::GetInstance()->natural_scroll_enabled();
-}
-
 bool IsTouchpadEvent(const base::NativeEvent& event) {
   return DeviceDataManager::GetInstance()->IsTouchpadXInputEvent(event);
 }