Refactors StackingController::GetDefaultParent to ash/wm/common

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 172 matching lines @@
 }
 
 bool WmWindowAura::GetTargetVisibility() const {
   return window_->TargetVisibility();
 }
 
 bool WmWindowAura::IsVisible() const {
   return window_->IsVisible();
 }
 
+bool WmWindowAura::IsSystemModal() const {
+  return window_->GetProperty(aura::client::kModalKey) == ui::MODAL_TYPE_SYSTEM;
+}
+
 bool WmWindowAura::GetBoolProperty(WmWindowProperty key) {
   switch (key) {
     case WmWindowProperty::SNAP_CHILDREN_TO_PIXEL_BOUDARY:
       return window_->GetProperty(kSnapChildrenToPixelBoundary);
 
     case WmWindowProperty::ALWAYS_ON_TOP:
       return window_->GetProperty(aura::client::kAlwaysOnTopKey);
 
     default:
       NOTREACHED();
@@ skipping 349 matching lines @@
 }
 
 void WmWindowAura::OnWindowVisibilityChanging(aura::Window* window,
                                               bool visible) {
   FOR_EACH_OBSERVER(WmWindowObserver, observers_,
                     OnWindowVisibilityChanging(this, visible));
 }
 
 }  // namespace wm
 }  // namespace ash