Allow closing root window, or pressing the power button to shutdown ash_shell, and chrome /w chrome…

ui/views/widget/desktop_native_widget_helper_aura.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_NATIVE_WIDGET_HELPER_AURA_H_
 #define UI_VIEWS_WIDGET_DESKTOP_NATIVE_WIDGET_HELPER_AURA_H_
 
 #include "ui/aura/root_window_observer.h"
 #include "ui/gfx/rect.h"
 #include "ui/views/views_export.h"
@@ skipping 44 matching lines @@
   virtual void PreInitialize(aura::Window* window,
                              const Widget::InitParams& params) OVERRIDE;
   virtual void PostInitialize() OVERRIDE;
   virtual void ShowRootWindow() OVERRIDE;
   virtual aura::RootWindow* GetRootWindow() OVERRIDE;
   virtual gfx::Rect ModifyAndSetBounds(const gfx::Rect& bounds) OVERRIDE;
 
   // Overridden from aura::RootWindowObserver:
   virtual void OnRootWindowResized(const aura::RootWindow* root,
                                    const gfx::Size& old_size) OVERRIDE;
-  virtual void OnRootWindowHostClosed(const aura::RootWindow* root) OVERRIDE;
+  virtual void OnRootWindowHostCloseRequested(
+                                   const aura::RootWindow* root) OVERRIDE;
 
  private:
   // A weak pointer back to our owning widget.
   NativeWidgetAura* widget_;
 
   // Optionally, a RootWindow that we attach ourselves to.
   scoped_ptr<aura::RootWindow> root_window_;
 
   // Toplevel event filter which dispatches to other event filters.
   aura::shared::CompoundEventFilter* root_window_event_filter_;
@@ skipping 22 matching lines @@
 #elif defined(USE_X11)
   scoped_ptr<X11WindowEventFilter> x11_window_event_filter_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(DesktopNativeWidgetHelperAura);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_NATIVE_WIDGET_HELPER_AURA_H_