Get mouse events to work with win aura, and make the combobox function in the views examples app.

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 "ui/views/controls/menu/menu_controller.h"
 #include "ui/views/controls/menu/menu_host_root_view.h"
 #include "ui/views/controls/menu/menu_item_view.h"
 #include "ui/views/controls/menu/native_menu_host.h"
 #include "ui/views/controls/menu/submenu_view.h"
 #include "ui/views/widget/native_widget_private.h"
 #include "ui/views/widget/widget.h"
 
+#if defined(USE_AURA)
+#include "base/command_line.h"
+#include "ui/views/widget/desktop_native_widget_aura.h"
+#endif
+
 namespace views {
 
 ////////////////////////////////////////////////////////////////////////////////
 // MenuHost, public:
 
 MenuHost::MenuHost(SubmenuView* submenu)
     : submenu_(submenu),
       destroying_(false),
       ignore_capture_lost_(false) {
 }
 
 MenuHost::~MenuHost() {
 }
 
 void MenuHost::InitMenuHost(Widget* parent,
                             const gfx::Rect& bounds,
                             View* contents_view,
                             bool do_capture) {
   Widget::InitParams params(Widget::InitParams::TYPE_MENU);
   params.has_dropshadow = true;
   params.parent_widget = parent;
   params.bounds = bounds;
+#if defined(USE_AURA) && !defined(OS_CHROMEOS)
+  if (CommandLine::ForCurrentProcess()->HasSwitch("win-aura"))
+    params.native_widget = new DesktopNativeWidgetAura(this);
+#endif
   Init(params);
   SetContentsView(contents_view);
   ShowMenuHost(do_capture);
 }
 
 bool MenuHost::IsMenuHostVisible() {
   return IsVisible();
 }
 
 void MenuHost::ShowMenuHost(bool do_capture) {
@@ skipping 64 matching lines @@
   if (destroying_)
     return;
 
   MenuController* menu_controller =
       submenu_->GetMenuItem()->GetMenuController();
   if (menu_controller && !menu_controller->drag_in_progress())
     menu_controller->CancelAll();
 }
 
 }  // namespace views