wrench_menu: use NativeTheme colors under aura

ui/native_theme/native_theme.h

 // Copyright (c) 2012 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_NATIVE_THEME_NATIVE_THEME_H_
 #define UI_NATIVE_THEME_NATIVE_THEME_H_
 
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/native_theme/native_theme_export.h"
@@ skipping 212 matching lines @@
 
   // Colors for GetSystemColor().
   enum ColorId {
     // Windows
     kColorId_WindowBackground,
     // Dialogs
     kColorId_DialogBackground,
     // FocusableBorder
     kColorId_FocusedBorderColor,
     kColorId_UnfocusedBorderColor,
+    kColorId_HoverBorderColor,
     // TextButton
     kColorId_TextButtonBackgroundColor,
     kColorId_TextButtonEnabledColor,
     kColorId_TextButtonDisabledColor,
     kColorId_TextButtonHighlightColor,
     kColorId_TextButtonHoverColor,
     // MenuItem
     kColorId_EnabledMenuItemForegroundColor,
     kColorId_DisabledMenuItemForegroundColor,
     kColorId_FocusedMenuItemBackgroundColor,
+    kColorId_HoverMenuItemBackgroundColor,
     kColorId_MenuSeparatorColor,
     kColorId_MenuBackgroundColor,
     kColorId_MenuBorderColor,
     // Label
     kColorId_LabelEnabledColor,
     kColorId_LabelDisabledColor,
     kColorId_LabelBackgroundColor,
     // Textfield
     kColorId_TextfieldDefaultColor,
     kColorId_TextfieldDefaultBackground,
@@ skipping 40 matching lines @@
   unsigned int thumb_inactive_color_;
   unsigned int thumb_active_color_;
   unsigned int track_color_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTheme);
 };
 
 }  // namespace ui
 
 #endif  // UI_NATIVE_THEME_NATIVE_THEME_H_