Use a single views::MenuConfig instance for each platform

ui/views/controls/menu/menu_host.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/menu_host.h"
 
 #include "base/auto_reset.h"
 #include "base/trace_event/trace_event.h"
 #include "ui/events/gestures/gesture_recognizer.h"
 #include "ui/gfx/path.h"
@@ skipping 23 matching lines @@
 }
 
 void MenuHost::InitMenuHost(Widget* parent,
                             const gfx::Rect& bounds,
                             View* contents_view,
                             bool do_capture) {
   TRACE_EVENT0("views", "MenuHost::InitMenuHost");
   Widget::InitParams params(Widget::InitParams::TYPE_MENU);
   const MenuController* menu_controller =
       submenu_->GetMenuItem()->GetMenuController();
-  const MenuConfig& menu_config = submenu_->GetMenuItem()->GetMenuConfig();
+  const MenuConfig& menu_config = MenuConfig::instance();
   bool rounded_border = menu_controller && menu_config.corner_radius > 0;
   bool bubble_border = submenu_->GetScrollViewContainer() &&
                        submenu_->GetScrollViewContainer()->HasBubbleBorder();
   params.shadow_type = bubble_border ? Widget::InitParams::SHADOW_TYPE_NONE
                                      : Widget::InitParams::SHADOW_TYPE_DROP;
   params.opacity = (bubble_border || rounded_border) ?
       Widget::InitParams::TRANSLUCENT_WINDOW :
       Widget::InitParams::OPAQUE_WINDOW;
   params.parent = parent ? parent->GetNativeView() : NULL;
   params.bounds = bounds;
@@ skipping 110 matching lines @@
   }
   menu_controller->OnDragComplete(should_close);
 
   // We may have lost capture in the drag and drop, but are remaining open.
   // Return capture so we get MouseCaptureLost events.
   if (!should_close)
     native_widget_private()->SetCapture();
 }
 
 }  // namespace views