Update drop down menu look & feel

ui/views/controls/menu/menu_config_views.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_config.h"
 
 #include "grit/ui_resources.h"
 #include "ui/base/layout.h"
 #include "ui/base/native_theme/native_theme_aura.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 
 namespace views {
 
 // static
 MenuConfig* MenuConfig::Create() {
   MenuConfig* config = new MenuConfig();
   config->text_color = ui::NativeTheme::instance()->GetSystemColor(
       ui::NativeTheme::kColorId_EnabledMenuItemForegroundColor);
   config->submenu_horizontal_margin_size = 0;
-  config->submenu_vertical_margin_size = 2;
+  config->submenu_vertical_margin_size = 0;
   config->submenu_horizontal_inset = 1;
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   config->arrow_to_edge_padding = 20;
   config->icon_to_label_padding = 4;
   config->arrow_width = rb.GetImageNamed(IDR_MENU_ARROW).ToImageSkia()->width();
   const gfx::ImageSkia* check = rb.GetImageNamed(IDR_MENU_CHECK).ToImageSkia();
   // Add 4 to force some padding between check and label.
   config->check_width = check->width() + 4;
   config->check_height = check->height();
   if (ui::GetDisplayLayout() == ui::LAYOUT_TOUCH) {
     config->separator_height = 1;
     config->item_min_height = 40;
     config->item_left_margin = 4;
   } else {
     config->separator_height = 5;
     config->item_min_height = 30;
     config->item_left_margin = 8;
   }
   config->font = rb.GetFont(ResourceBundle::BaseFont);
   config->label_to_arrow_padding = 20;
   config->label_to_accelerator_padding = 20;
   config->always_use_icon_to_label_padding = true;
   config->align_arrow_and_shortcut = true;
 
   return config;
 }
 
 }  // namespace views