Removes WindowState::aura_window()

ash/shell.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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 42 matching lines @@
 #include "ash/shell_window_ids.h"
 #include "ash/system/locale/locale_notification_controller.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/toast/toast_manager.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/utility/partial_screenshot_controller.h"
 #include "ash/wm/ash_focus_rules.h"
 #include "ash/wm/ash_native_cursor_manager.h"
 #include "ash/wm/aura/wm_globals_aura.h"
+#include "ash/wm/aura/wm_window_aura.h"
 #include "ash/wm/common/root_window_finder.h"
 #include "ash/wm/event_client_impl.h"
 #include "ash/wm/lock_state_controller.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/overlay_event_filter.h"
 #include "ash/wm/overview/window_selector_controller.h"
 #include "ash/wm/power_button_controller.h"
 #include "ash/wm/resize_shadow_controller.h"
@@ skipping 1163 matching lines @@
 
 void Shell::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
     aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash