Move use_xkbcommon from build to ui/base

ui/events/keycodes/xkb_keysym.h

 // Copyright (c) 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.
 
 #ifndef UI_EVENTS_KEYCODES_XKB_KEYSYM_H_
 #define UI_EVENTS_KEYCODES_XKB_KEYSYM_H_
 
+#include "ui/base/ui_features.h"
+
 // This file provides definitions of the xkbcommon keysym type (xkb_keysym_t)
 // and values (XKB_KEY_...) for both xkbcommon and traditional X11.
 
-#if defined(USE_XKBCOMMON)
+#if BUILDFLAG(USE_XKBCOMMON)
 
 #include <xkbcommon/xkbcommon.h>
 #include <xkbcommon/xkbcommon-keysyms.h>
 
-#else  // !defined(USE_XKBCOMMON)
+#else  // !BUILDFLAG(USE_XKBCOMMON)
 
 #define XK_3270  // For XK_3270_BackTab in particular.
 #include <X11/X.h>
 #include <X11/keysym.h>
 #include <X11/Sunkeysym.h>
 #include <X11/XF86keysym.h>
 
 using xkb_keysym_t = uint32_t;
 
 #define XKB_KEY_3270_Duplicate                    XK_3270_Duplicate
@@ skipping 500 matching lines @@
 #define XKB_KEY_XF86Hibernate                     XF86XK_Hibernate
 #define XKB_KEY_XF86TouchpadToggle                XF86XK_TouchpadToggle
 #define XKB_KEY_XF86TouchpadOn                    XF86XK_TouchpadOn
 #define XKB_KEY_XF86TouchpadOff                   XF86XK_TouchpadOff
 #define XKB_KEY_XF86AudioMicMute                  XF86XK_AudioMicMute
 
 #endif
 
 #endif  // UI_EVENTS_KEYCODES_XKB_KEYSYM_H_