linux_aura: Don't inject black in WrenchMenu::GetForegroundColor().

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 225 matching lines @@
     kColorId_UnfocusedBorderColor,
     // Button
     kColorId_ButtonBackgroundColor,
     kColorId_ButtonEnabledColor,
     kColorId_ButtonDisabledColor,
     kColorId_ButtonHighlightColor,
     kColorId_ButtonHoverColor,
     // MenuItem
     kColorId_EnabledMenuItemForegroundColor,
     kColorId_DisabledMenuItemForegroundColor,
+    kColorId_DisabledEmphasizedMenuItemForegroundColor,
     kColorId_SelectedMenuItemForegroundColor,
     kColorId_FocusedMenuItemBackgroundColor,
     kColorId_HoverMenuItemBackgroundColor,
     kColorId_MenuSeparatorColor,
     kColorId_MenuBackgroundColor,
     kColorId_MenuBorderColor,
     // MenuButton - buttons in wrench menu
     kColorId_EnabledMenuButtonBorderColor,
     kColorId_FocusedMenuButtonBorderColor,
     kColorId_HoverMenuButtonBorderColor,
@@ skipping 44 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_