Remove KeyboardCodeFromGdkEventKey.

ui/base/keycodes/keyboard_code_conversion_gtk.cc

 // Copyright (c) 2011 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.
 
 /*
  * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
  * Copyright (C) 2007 Holger Hans Peter Freyther
  * Copyright (C) 2008 Collabora, Ltd.  All rights reserved.
  * Copyright (C) 2008, 2009 Google Inc.
@@ skipping 64 matching lines @@
 
   int native_keycode = 0;
   if (keyval && gdk_keymap_get_entries_for_keyval(0, keyval, &keys, &n_keys)) {
     native_keycode = keys[0].keycode;
     g_free(keys);
   }
 
   return native_keycode;
 }
 
-KeyboardCode KeyboardCodeFromGdkEventKey(GdkEventKey* event) {
-  KeyboardCode keycode = WindowsKeyCodeForGdkKeyCode(event->keyval);
-  // Gtk's key values are same as X11's keysyms.
-  if (keycode == VKEY_UNKNOWN) {
-    unsigned int keyval =
-        DefaultXKeysymFromHardwareKeycode(event->hardware_keycode);
-    keycode = WindowsKeyCodeForGdkKeyCode(keyval);
-  }
-  return keycode;
-}
-
 }  // namespace ui