[System-Keyboard-Lock] Add KeycodeConverter::CodeStringToNativeKeycode() function

ui/events/keycodes/dom/keycode_converter.h

 // Copyright 2013 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_DOM4_KEYCODE_CONVERTER_H_
-#define UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_
+#ifndef UI_EVENTS_KEYCODES_DOM_KEYCODE_CONVERTER_H_
+#define UI_EVENTS_KEYCODES_DOM_KEYCODE_CONVERTER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string>
 
 #include "base/macros.h"
 #include "ui/events/keycodes/dom/dom_key.h"
 
 // For reference, the W3C UI Event spec is located at:
 // http://www.w3.org/TR/uievents/
@@ skipping 75 matching lines @@
 
   // Convert a platform native keycode into an equivalent USB keycode.
   static uint32_t NativeKeycodeToUsbKeycode(int native_keycode);
 
   // Convert a USB keycode into a DomCode.
   static DomCode UsbKeycodeToDomCode(uint32_t usb_keycode);
 
   // Convert a DomCode into a USB keycode.
   static uint32_t DomCodeToUsbKeycode(DomCode dom_code);
 
-  // Convert a DOM3 Event |code| string into a USB keycode value.
-  static uint32_t CodeToUsbKeycode(const std::string& code);
+  // Convert a UI Event |code| string into a USB keycode value.
+  static uint32_t CodeStringToUsbKeycode(const std::string& code);
+
+  // Convert a UI Event |code| string into a native keycode.
+  static int CodeStringToNativeKeycode(const std::string& code);
 
   // Static methods to support testing.
   static size_t NumKeycodeMapEntriesForTest();
   static const KeycodeMapEntry* GetKeycodeMapForTest();
   static const char* DomKeyStringForTest(size_t index);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(KeycodeConverter);
 };
 
 }  // namespace ui
 
-#endif  // UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_
+#endif  // UI_EVENTS_KEYCODES_DOM_KEYCODE_CONVERTER_H_