Absence of keyboard layout is fatal.

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

Index: ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.cc
diff --git a/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.cc b/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.cc
index 559463f6a55712a9190a70428feb388e517aabb5..dd371c29bf118383365437ec9eacbdcb761f49af 100644
--- a/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.cc
+++ b/ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.cc
@@ -843,7 +843,7 @@ bool XkbKeyboardLayoutEngine::XkbLookup(xkb_keycode_t xkb_keycode,
                                         xkb_keysym_t* xkb_keysym,
                                         base::char16* character) const {
   if (!xkb_state_) {
-    LOG(ERROR) << "No current XKB state";
+    LOG(FATAL) << "No current XKB state";
     return false;
   }
   xkb_state_update_mask(xkb_state_.get(), xkb_flags, 0, 0, 0, 0, 0);