Stack at top functionality for Aura-based windows

ui/views/widget/desktop_aura/desktop_root_window_host_win.cc

 // 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.
 
 #include "ui/views/widget/desktop_aura/desktop_root_window_host_win.h"
 
 #include "base/win/metro.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 208 matching lines @@
 void DesktopRootWindowHostWin::SetSize(const gfx::Size& size) {
   gfx::Size size_in_pixels = gfx::win::DIPToScreenSize(size);
   gfx::Size expanded = GetExpandedWindowSize(
       message_handler_->window_ex_style(), size_in_pixels);
   window_enlargement_ =
       gfx::Vector2d(expanded.width() - size_in_pixels.width(),
                     expanded.height() - size_in_pixels.height());
   message_handler_->SetSize(expanded);
 }
 
+void DesktopRootWindowHostWin::StackAtTop() {
+  message_handler_->StackAtTop();
+}
+
 void DesktopRootWindowHostWin::CenterWindow(const gfx::Size& size) {
   gfx::Size size_in_pixels = gfx::win::DIPToScreenSize(size);
   message_handler_->CenterWindow(size_in_pixels);
 }
 
 void DesktopRootWindowHostWin::GetWindowPlacement(
     gfx::Rect* bounds,
     ui::WindowShowState* show_state) const {
   message_handler_->GetWindowPlacement(bounds, show_state);
   InsetBottomRight(bounds, window_enlargement_);
@@ skipping 715 matching lines @@
 
 // static
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopRootWindowHostWin(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views