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

chrome/browser/chromeos/login/login_display_host_impl.cc

Index: chrome/browser/chromeos/login/login_display_host_impl.cc
diff --git a/chrome/browser/chromeos/login/login_display_host_impl.cc b/chrome/browser/chromeos/login/login_display_host_impl.cc
index b7e072f4e8ac062e94fecb5162879eb3f6e969ee..51f6897a93cf19861e89e5fde079b6a18d284732 100644
--- a/chrome/browser/chromeos/login/login_display_host_impl.cc
+++ b/chrome/browser/chromeos/login/login_display_host_impl.cc
@@ -1055,9 +1055,9 @@
     system::InputDeviceSettings::Get()->SetTapToClick(
         prefs->GetBoolean(prefs::kOwnerTapToClickEnabled));
   }
-  system::InputDeviceSettings::Get()->SetNaturalScroll(
-      CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kNaturalScrollDefault));
+
+  ui::SetNaturalScroll(CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kNaturalScrollDefault));
 
   gfx::Rect screen_bounds(chromeos::CalculateScreenBounds(gfx::Size()));