Move use_xkbcommon from build to ui/base

ui/events/ozone/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
+import("//ui/base/ui_features.gni")
 
 declare_args() {
   # Support ChromeOS touchpad gestures with ozone.
   use_evdev_gestures = false
 }
 
 if (use_xkbcommon) {
   pkg_config("xkbcommon") {
     packages = [ "xkbcommon" ]
   }
@@ skipping 146 matching lines @@
       public_configs += [ ":evdev_gestures" ]
 
       configs += [
         ":libevdev-cros",
         ":libgestures",
       ]
     }
   }
 }
 
-config("events_ozone_layout_config") {
-  if (use_xkbcommon) {
-    defines = [ "USE_XKBCOMMON" ]
-  }
-}
-
 component("events_ozone_layout") {
   sources = [
     "layout/events_ozone_layout_export.h",
     "layout/keyboard_layout_engine.h",
     "layout/keyboard_layout_engine_manager.cc",
     "layout/keyboard_layout_engine_manager.h",
     "layout/layout_util.cc",
     "layout/layout_util.h",
     "layout/no/no_keyboard_layout_engine.cc",
     "layout/no/no_keyboard_layout_engine.h",
     "layout/stub/stub_keyboard_layout_engine.cc",
     "layout/stub/stub_keyboard_layout_engine.h",
   ]
 
   defines = [ "EVENTS_OZONE_LAYOUT_IMPLEMENTATION" ]
 
   deps = [
     "//base",
     "//ui/events:dom_keycode_converter",
     "//ui/events:events_base",
   ]
 
-  public_configs = [ ":events_ozone_layout_config" ]
-
   if (use_xkbcommon) {
     configs += [ ":xkbcommon" ]
 
     sources += [
       "layout/xkb/xkb_evdev_codes.cc",
       "layout/xkb/xkb_evdev_codes.h",
       "layout/xkb/xkb_key_code_converter.h",
       "layout/xkb/xkb_keyboard_layout_engine.cc",
       "layout/xkb/xkb_keyboard_layout_engine.h",
     ]
 
     deps += [ "//ui/events/keycodes:xkb" ]
   }
 }