Revert of 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 bf8b04ee58b0cde6d9036d3d5840b84869b8672a..9fec9df2bf9bcf18d5f9947a3d96e0c4229a8662 100644
--- a/ui/events/x/events_x.cc
+++ b/ui/events/x/events_x.cc
@@ -667,6 +667,14 @@
   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);
 }