Use a single views::MenuConfig instance for each platform

chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.cc

Index: chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.cc
diff --git a/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.cc b/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.cc
index 20e3fabded214b51906d5161d50baadd0b971d4b..0232e6c2544b2a32f9d4e0b00760f2d9ccaa9799 100644
--- a/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.cc
+++ b/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.cc
@@ -74,8 +74,7 @@ gfx::Size ExtensionToolbarMenuView::GetPreferredSize() const {
 int ExtensionToolbarMenuView::GetHeightForWidth(int width) const {
   // The width passed in here includes the full width of the menu, so we need
   // to omit the necessary padding.
-  const views::MenuConfig& menu_config =
-      static_cast<const views::MenuItemView*>(parent())->GetMenuConfig();
+  const views::MenuConfig& menu_config = views::MenuConfig::instance();
   int end_padding = menu_config.arrow_to_edge_padding -
       container_->toolbar_actions_bar()->platform_settings().item_spacing;
   width -= start_padding() + end_padding;