Removes WindowState::aura_window()

ash/wm/aura/wm_window_aura.cc

 // Copyright 2016 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/wm/aura/wm_window_aura.h"
 
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf_util.h"
 #include "ash/wm/aura/aura_layout_manager_adapter.h"
 #include "ash/wm/aura/wm_globals_aura.h"
@@ skipping 451 matching lines @@
 }
 
 void WmWindowAura::Activate() {
   ActivateWindow(window_);
 }
 
 void WmWindowAura::Deactivate() {
   DeactivateWindow(window_);
 }
 
+void WmWindowAura::SetFullscreen() {
+  window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_FULLSCREEN);
+}
+
 void WmWindowAura::Maximize() {
   return window_->SetProperty(aura::client::kShowStateKey,
                               ui::SHOW_STATE_MAXIMIZED);
 }
 
 void WmWindowAura::Minimize() {
   window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MINIMIZED);
 }
 
 void WmWindowAura::Unminimize() {
@@ skipping 75 matching lines @@
 }
 
 void WmWindowAura::OnWindowVisibilityChanging(aura::Window* window,
                                               bool visible) {
   FOR_EACH_OBSERVER(WmWindowObserver, observers_,
                     OnWindowVisibilityChanging(this, visible));
 }
 
 }  // namespace wm
 }  // namespace ash