[KeyboardEvent] Use DOM |code| rather than Windows-based key code

ui/events/keycodes/keyboard_code_conversion_xkb.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2015 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.
 
-#include "ui/events/ozone/layout/xkb/xkb_keyboard_code_conversion.h"
-
 #include "ui/events/keycodes/dom3/dom_key.h"
+#include "ui/events/keycodes/keyboard_code_conversion.h"
+#include "ui/events/keycodes/keyboard_code_conversion_xkb.h"
 
 namespace ui {
 
 DomKey NonPrintableXkbKeySymToDomKey(xkb_keysym_t keysym) {
   switch (keysym) {
     case XKB_KEY_BackSpace:
       return DomKey::BACKSPACE;
     case XKB_KEY_Tab:
     case XKB_KEY_KP_Tab:
     case XKB_KEY_ISO_Left_Tab:
@@ skipping 425 matching lines @@
       return 0x0785;  // combining inverted breve
     case XKB_KEY_dead_belowcomma:
       return 0x0806;  // combining comma below
     case XKB_KEY_dead_currency:
       return 0x0164;  // currency sign
     default:
       return 0;
   }
 }
 
+DomKey XkbKeySymToDomKey(xkb_keysym_t keysym, base::char16 character) {
+  DomKey dom_key = NonPrintableXkbKeySymToDomKey(keysym);
+  if (dom_key == DomKey::NONE)
+    dom_key = CharacterToDomKey(character);
+  return dom_key;
+}
+
 }  // namespace ui