Close notification windows while message loop is still active

ash/shell.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 ASH_SHELL_H_
 #define ASH_SHELL_H_
 #pragma once
 
 #include <utility>
 #include <vector>
@@ skipping 112 matching lines @@
   // Gets the singleton RootWindow used by the Shell.
   static aura::RootWindow* GetRootWindow();
 
   internal::RootWindowLayoutManager* root_window_layout() const {
     return root_window_layout_;
   }
 
   aura::Window* GetContainer(int container_id);
   const aura::Window* GetContainer(int container_id) const;
 
+  // Close all ash windows, such as launcher, status area and background,
+  // and remove all event filters.
+  void Shutdown();
+
   // Adds or removes |filter| from the RootWindowEventFilter.
   void AddRootWindowEventFilter(aura::EventFilter* filter);
   void RemoveRootWindowEventFilter(aura::EventFilter* filter);
   size_t GetRootWindowEventFilterCount() const;
 
   // Shows the background menu over |widget|.
   void ShowBackgroundMenu(views::Widget* widget, const gfx::Point& location);
 
   // Toggles app list.
   void ToggleAppList();
@@ skipping 193 matching lines @@
   // Owned by aura::RootWindow, cached here for type safety.
   internal::RootWindowLayoutManager* root_window_layout_;
 
   // Status area with clock, Wi-Fi signal, etc.
   views::Widget* status_widget_;
 
   // System tray with clock, Wi-Fi signal, etc. (a replacement in progress for
   // |status_widget_|).
   scoped_ptr<SystemTray> tray_;
 
+  // If the shell has been shutdown.

[Ben Goodger (Google), 2012/04/10 22:35:02]

shut down

+  bool shutdown_;
+
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_