add HideAndClose in preference to having Close sometimes magically defer

ui/views/widget/desktop_aura/desktop_native_widget_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_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_
 
 #include "base/memory/weak_ptr.h"
 #include "ui/aura/client/activation_change_observer.h"
 #include "ui/aura/client/activation_delegate.h"
@@ skipping 94 matching lines @@
   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
   virtual void SetSize(const gfx::Size& size) OVERRIDE;
   virtual void StackAbove(gfx::NativeView native_view) OVERRIDE;
   virtual void StackAtTop() OVERRIDE;
   virtual void StackBelow(gfx::NativeView native_view) OVERRIDE;
   virtual void SetShape(gfx::NativeRegion shape) OVERRIDE;
   virtual void Close() OVERRIDE;
   virtual void CloseNow() OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
+  virtual void HideAndClose() OVERRIDE;
   virtual void ShowMaximizedWithBounds(
       const gfx::Rect& restored_bounds) OVERRIDE;
   virtual void ShowWithWindowState(ui::WindowShowState state) OVERRIDE;
   virtual bool IsVisible() const OVERRIDE;
   virtual void Activate() OVERRIDE;
   virtual void Deactivate() OVERRIDE;
   virtual bool IsActive() const OVERRIDE;
   virtual void SetAlwaysOnTop(bool always_on_top) OVERRIDE;
   virtual void Maximize() OVERRIDE;
   virtual void Minimize() OVERRIDE;
@@ skipping 114 matching lines @@
   bool restore_focus_on_activate_;
 
   scoped_ptr<corewm::ShadowController> shadow_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopNativeWidgetAura);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_