Refactors building the system menu model into a common place

chrome/browser/ui/views/frame/browser_desktop_root_window_host_win.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 CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_DESKTOP_ROOT_WINDOW_HOST_WIN_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_DESKTOP_ROOT_WINDOW_HOST_WIN_H_
 
 #include "ui/views/widget/desktop_aura/desktop_root_window_host_win.h"
 #include "chrome/browser/ui/views/frame/browser_desktop_root_window_host.h"
 #include "chrome/browser/ui/views/frame/minimize_button_metrics_win.h"
 
 class BrowserFrame;
 class BrowserView;
 
 namespace views {
 class DesktopNativeWidgetAura;
+class NativeMenuWin;
 }
 
 class BrowserDesktopRootWindowHostWin : public BrowserDesktopRootWindowHost,
                                         public views::DesktopRootWindowHostWin {
  public:
   BrowserDesktopRootWindowHostWin(
       views::internal::NativeWidgetDelegate* native_widget_delegate,
       views::DesktopNativeWidgetAura* desktop_native_widget_aura,
       const gfx::Rect& initial_bounds,
       BrowserView* browser_view,
       BrowserFrame* browser_frame);
   virtual ~BrowserDesktopRootWindowHostWin();
 
  private:
+  views::NativeMenuWin* GetSystemMenu();
+
   // Overridden from BrowserDesktopRootWindowHost:
   virtual DesktopRootWindowHost* AsDesktopRootWindowHost() OVERRIDE;
   virtual int GetMinimizeButtonOffset() const OVERRIDE;
+  virtual bool UsesNativeSystemMenu() const OVERRIDE;
 
   // Overridden from DesktopRootWindowHostWin:
   virtual int GetInitialShowState() const OVERRIDE;
   virtual bool GetClientAreaInsets(gfx::Insets* insets) const OVERRIDE;
   virtual void HandleFrameChanged() OVERRIDE;
   virtual bool PreHandleMSG(UINT message,
                             WPARAM w_param,
                             LPARAM l_param,
                             LRESULT* result) OVERRIDE;
   virtual void PostHandleMSG(UINT message,
                              WPARAM w_param,
                              LPARAM l_param) OVERRIDE;
   virtual bool IsUsingCustomFrame() const OVERRIDE;
 
   void UpdateDWMFrame();
 
   BrowserView* browser_view_;
   BrowserFrame* browser_frame_;
 
   MinimizeButtonMetrics minimize_button_metrics_;
 
+  // The wrapped system menu itself.
+  scoped_ptr<views::NativeMenuWin> system_menu_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserDesktopRootWindowHostWin);
 };
 
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_DESKTOP_ROOT_WINDOW_HOST_WIN_H_