Stack at top functionality for Aura-based windows

ui/views/widget/desktop_aura/desktop_root_window_host_x11.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_ROOT_WINDOW_HOST_X11_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_
 
 #include <X11/Xlib.h>
 
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
@@ skipping 69 matching lines @@
   virtual void InitFocus(aura::Window* window) OVERRIDE;
   virtual scoped_ptr<corewm::Tooltip> CreateTooltip() OVERRIDE;
   virtual void Close() OVERRIDE;
   virtual void CloseNow() OVERRIDE;
   virtual aura::RootWindowHost* AsRootWindowHost() OVERRIDE;
   virtual void ShowWindowWithState(ui::WindowShowState show_state) OVERRIDE;
   virtual void ShowMaximizedWithBounds(
       const gfx::Rect& restored_bounds) OVERRIDE;
   virtual bool IsVisible() const OVERRIDE;
   virtual void SetSize(const gfx::Size& size) OVERRIDE;
+  virtual void StackAtTop() OVERRIDE;
   virtual void CenterWindow(const gfx::Size& size) OVERRIDE;
   virtual void GetWindowPlacement(
       gfx::Rect* bounds,
       ui::WindowShowState* show_state) const OVERRIDE;
   virtual gfx::Rect GetWindowBoundsInScreen() const OVERRIDE;
   virtual gfx::Rect GetClientAreaBoundsInScreen() const OVERRIDE;
   virtual gfx::Rect GetRestoredBounds() const OVERRIDE;
   virtual gfx::Rect GetWorkAreaBoundsInScreen() const OVERRIDE;
   virtual void SetShape(gfx::NativeRegion native_region) OVERRIDE;
   virtual void Activate() OVERRIDE;
@@ skipping 172 matching lines @@
   // A list of all (top-level) windows that have been created but not yet
   // destroyed.
   static std::list<XID>* open_windows_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopRootWindowHostX11);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_