XKB implementation of Ozone key layout.

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

+// 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.
+
+#ifndef UI_EVENTS_OZONE_LAYOUT_XKB_XKB_TYPES_H_
+#define UI_EVENTS_OZONE_LAYOUT_XKB_XKB_TYPES_H_
+
+#if defined(USE_X11)
+#include <X11/XKBlib.h>
+#else
+#include <xkbcommon/xkbcommon.h>
+#endif
+
+namespace ui {
+
+#if defined(USE_X11)
+using XkbKeyCode = decltype(XKeyEvent.keycode);
+using XkbFlags = decltype(XKeyEvent.state);
+using XkbKeySym = KeySym;
+#else
+using XkbKeyCode = xkb_keycode_t;
+using XkbFlags = xkb_mod_mask_t;
+using XkbKeySym = xkb_keysym_t;
+#endif
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_OZONE_LAYOUT_XKB_XKB_TYPES_H_