ozone: xkb: Fix number pad key mappings

ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h

Index: ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h
diff --git a/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h b/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h
index 4866b0683f20a80866f17f799c901955fd3ddbbf..6925dc68872e6983b3dea19afcbeb06f55a014ad 100644
--- a/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h
+++ b/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h
@@ -45,6 +45,9 @@ class EVENTS_OZONE_LAYOUT_EXPORT XkbKeyboardLayoutEngine
   };
   std::vector<XkbFlagMapEntry> xkb_flag_map_;
 
+  // Flag mask for num lock, which is always considered enabled.
+  xkb_mod_mask_t num_lock_mod_mask_;
+
   // Determines the Windows-based KeyboardCode (VKEY) for a character key,
   // accounting for non-US layouts. May return VKEY_UNKNOWN, in which case the
   // caller should use |DomCodeToNonLocatedKeyboardCode()| as a last resort.