Move app/key* to ui/base/keycodes/*

ui/base/keycodes/keyboard_code_conversion_x.h

Index: ui/base/keycodes/keyboard_code_conversion_x.h
===================================================================
--- ui/base/keycodes/keyboard_code_conversion_x.h	(revision 0)
+++ ui/base/keycodes/keyboard_code_conversion_x.h	(revision 0)
@@ -0,0 +1,18 @@
+// 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.
+
+#ifndef UI_BASE_KEYCODES_KEYBOARD_CODE_CONVERSION_X_H_
+#define UI_BASE_KEYCODES_KEYBOARD_CODE_CONVERSION_X_H_
+
+#include "ui/base/keycodes/keyboard_codes_posix.h"
+
+typedef union _XEvent XEvent;
+
+namespace ui {
+
+KeyboardCode KeyboardCodeFromXKeyEvent(XEvent* xev);
+
+}  // namespace ui
+
+#endif  // UI_BASE_KEYCODES_KEYBOARD_CODE_CONVERSION_X_H_