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

ui/views/widget/desktop_root_window_host.h

 // 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.
 
 #ifndef UI_VIEWS_WIDGET_DESKTOP_ROOT_WINDOW_HOST_H_
 #define UI_VIEWS_WIDGET_DESKTOP_ROOT_WINDOW_HOST_H_
 
 #include "ui/base/ui_base_types.h"
 #include "ui/views/widget/widget.h"
 
 namespace aura {
+class RootWindowHost;
 class Window;
 }
 
 namespace gfx {
 class Rect;
 }
 
 namespace views {
 namespace internal {
 class NativeWidgetDelegate;
 }
 
 class DesktopRootWindowHost {
  public:
   virtual ~DesktopRootWindowHost() {}
 
   static DesktopRootWindowHost* Create(
       internal::NativeWidgetDelegate* native_widget_delegate,
       const gfx::Rect& initial_bounds);
 
   virtual void Init(aura::Window* content_window,
                     const Widget::InitParams& params) = 0;
 
+  virtual void Close() = 0;
+  virtual void CloseNow() = 0;
+
+  virtual aura::RootWindowHost* AsRootWindowHost() = 0;
+
   virtual void ShowWindowWithState(ui::WindowShowState show_state) = 0;
+
+  virtual bool IsVisible() const = 0;
+
+  virtual gfx::Rect GetClientAreaBoundsInScreen() const = 0;
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_ROOT_WINDOW_HOST_H_