Consolidate ui/events/keycodes/dom[34]/ into .../dom/

ui/events/ozone/evdev/keyboard_util_evdev.cc

 // 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/evdev/keyboard_util_evdev.h"
 
 #include <linux/input.h>
 
-#include "ui/events/keycodes/dom4/keycode_converter.h"
+#include "ui/events/keycodes/dom/keycode_converter.h"
 
 namespace ui {
 
 namespace {
 
 const int kXkbKeycodeOffset = 8;
 
 }  // namespace
 
 int NativeCodeToEvdevCode(int native_code) {
   if (native_code == KeycodeConverter::InvalidNativeKeycode())
     return KEY_RESERVED;
 
   return native_code - kXkbKeycodeOffset;
 }
 
 int EvdevCodeToNativeCode(int evdev_code) {
   if (evdev_code == KEY_RESERVED)
     return KeycodeConverter::InvalidNativeKeycode();
 
   return evdev_code + kXkbKeycodeOffset;
 }
 
 }  // namespace ui