Use a single views::MenuConfig instance for each platform

ui/views/controls/menu/native_menu_win.cc

 // 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.
 
 #include "ui/views/controls/menu/native_menu_win.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/stl_util.h"
@@ skipping 253 matching lines @@
             false);
         skia::DrawToNativeContext(
             canvas.sk_canvas(), dc,
             draw_item_struct->rcItem.left + kItemLeftMargin,
             draw_item_struct->rcItem.top + (draw_item_struct->rcItem.bottom -
                 draw_item_struct->rcItem.top - skia_icon->height()) / 2, NULL);
       } else if (type == ui::MenuModel::TYPE_CHECK &&
                  data->native_menu_win->model_->IsItemCheckedAt(
                      data->model_index)) {
         // Manually render a checkbox.
-        ui::NativeThemeWin* native_theme = ui::NativeThemeWin::instance();
-        const MenuConfig& config = MenuConfig::instance(native_theme);
+        const MenuConfig& config = MenuConfig::instance();
         NativeTheme::State state;
         if (draw_item_struct->itemState & ODS_DISABLED) {
           state = NativeTheme::kDisabled;
         } else {
           state = draw_item_struct->itemState & ODS_SELECTED ?
               NativeTheme::kHovered : NativeTheme::kNormal;
         }
         gfx::Canvas canvas(gfx::Size(config.check_width, config.check_height),
                            1.0f,
                            false);
         NativeTheme::ExtraParams extra;
         extra.menu_check.is_radio = false;
         gfx::Rect bounds(0, 0, config.check_width, config.check_height);
 
         // Draw the background and the check.
+        ui::NativeThemeWin* native_theme = ui::NativeThemeWin::instance();
         native_theme->Paint(
             canvas.sk_canvas(), NativeTheme::kMenuCheckBackground,
             state, bounds, extra);
         native_theme->Paint(
             canvas.sk_canvas(), NativeTheme::kMenuCheck, state, bounds, extra);
 
         // Draw checkbox to menu.
         skia::DrawToNativeContext(canvas.sk_canvas(), dc,
             draw_item_struct->rcItem.left + kItemLeftMargin,
             draw_item_struct->rcItem.top + (draw_item_struct->rcItem.bottom -
@@ skipping 448 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // MenuWrapper, public:
 
 // static
 MenuWrapper* MenuWrapper::CreateWrapper(ui::MenuModel* model) {
   return new NativeMenuWin(model, NULL);
 }
 
 }  // namespace views