Handle transient children as a part of transient parent

athena/wm/window_list_provider_impl.h

 // Copyright 2014 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 ATHENA_WM_WINDOW_LIST_PROVIDER_IMPL_H_
 #define ATHENA_WM_WINDOW_LIST_PROVIDER_IMPL_H_
 
 #include "athena/wm/public/window_list_provider.h"
+#include "base/gtest_prod_util.h"

[Mr4D (OOO till 08-26), 2014/10/08 03:44:25]

Why do you need this?

 #include "ui/aura/window_observer.h"
 
 namespace athena {
 
 class WindowListProviderObserver;
 
 // This implementation of the WindowListProviderImpl uses the same order as in
 // the container window's stacking order.
 class ATHENA_EXPORT WindowListProviderImpl : public WindowListProvider,
                                              public aura::WindowObserver {
  public:
   explicit WindowListProviderImpl(aura::Window* container);
   virtual ~WindowListProviderImpl();
 
- private:
-  void RecreateWindowList();
+  bool IsValidWindow(aura::Window* window) const;
 
   // WindowListProvider:
   virtual void AddObserver(WindowListProviderObserver* observer) override;
   virtual void RemoveObserver(WindowListProviderObserver* observer) override;
   virtual const aura::Window::Windows& GetWindowList() const override;
   virtual bool IsWindowInList(aura::Window* window) const override;
-  virtual bool IsValidWindow(aura::Window* window) const override;
   virtual void StackWindowFrontOf(aura::Window* window,
                                   aura::Window*reference_window) override;
   virtual void StackWindowBehindTo(aura::Window* window,
                                    aura::Window*reference_window) override;
 
+ private:
+  void RecreateWindowList();
+
   // aura::WindowObserver:
   virtual void OnWindowAdded(aura::Window* new_window) override;
   virtual void OnWillRemoveWindow(aura::Window* old_window) override;
   virtual void OnWindowStackingChanged(aura::Window* window) override;
 
   aura::Window* container_;
   aura::Window::Windows window_list_;
   ObserverList<WindowListProviderObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowListProviderImpl);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_WM_WINDOW_LIST_PROVIDER_IMPL_H_