aura-mus: Implement stacking in DesktopWindowTreeHostMus.

ui/aura/mus/window_tree_client.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 UI_AURA_MUS_WINDOW_TREE_CLIENT_H_
 #define UI_AURA_MUS_WINDOW_TREE_CLIENT_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 44 matching lines @@
 class InFlightFocusChange;
 class InFlightPropertyChange;
 class InFlightVisibleChange;
 class MusContextFactory;
 class WindowMus;
 class WindowPortMus;
 struct WindowPortPropertyData;
 class WindowTreeClientDelegate;
 class WindowTreeClientPrivate;
 class WindowTreeClientObserver;
+class WindowTreeClientTestObserver;
 class WindowTreeHostMus;
 
 namespace client {
 class CaptureClient;
 }
 
 using EventResultCallback = base::Callback<void(ui::mojom::EventResult)>;
 
 // Manages the connection with mus.
 //
@@ skipping 86 matching lines @@
                          const gfx::Point& cursor_location,
                          const base::Callback<void(bool)>& callback);
 
   // Cancels a in progress window move. (If no window is currently being moved,
   // does nothing.)
   void CancelWindowMove(Window* window);
 
   void AddObserver(WindowTreeClientObserver* observer);
   void RemoveObserver(WindowTreeClientObserver* observer);
 
+  void AddTestObserver(WindowTreeClientTestObserver* observer);
+  void RemoveTestObserver(WindowTreeClientTestObserver* observer);
+
  private:
   friend class InFlightBoundsChange;
   friend class InFlightFocusChange;
   friend class InFlightPropertyChange;
   friend class InFlightVisibleChange;
   friend class WindowPortMus;
   friend class WindowTreeClientPrivate;
 
   enum class Origin {
     CLIENT,
@@ skipping 249 matching lines @@
                                         const gfx::Rect& bounds) override;
   void OnWindowTreeHostClientAreaWillChange(
       WindowTreeHostMus* window_tree_host,
       const gfx::Insets& client_area,
       const std::vector<gfx::Rect>& additional_client_areas) override;
   void OnWindowTreeHostHitTestMaskWillChange(
       WindowTreeHostMus* window_tree_host,
       const base::Optional<gfx::Rect>& mask_rect) override;
   void OnWindowTreeHostDeactivateWindow(
       WindowTreeHostMus* window_tree_host) override;
+  void OnWindowTreeHostStackAtTop(WindowTreeHostMus* window_tree_host) override;
   std::unique_ptr<WindowPortMus> CreateWindowPortForTopLevel(
       const std::map<std::string, std::vector<uint8_t>>* properties) override;
   void OnWindowTreeHostCreated(WindowTreeHostMus* window_tree_host) override;
 
   // Override from client::TransientWindowClientObserver:
   void OnTransientChildWindowAdded(Window* parent,
                                    Window* transient_child) override;
   void OnTransientChildWindowRemoved(Window* parent,
                                      Window* transient_child) override;
   void OnWillRestackTransientChildAbove(Window* parent,
@@ skipping 73 matching lines @@
   // Callback executed when a move loop initiated by PerformWindowMove() is
   // completed.
   base::Callback<void(bool)> on_current_move_finished_;
 
   // The current change id for the window manager.
   uint32_t current_wm_move_loop_change_ = 0u;
   Id current_wm_move_loop_window_id_ = 0u;
 
   std::unique_ptr<DragDropControllerMus> drag_drop_controller_;
 
+  base::ObserverList<WindowTreeClientTestObserver> test_observers_;
+
   std::unique_ptr<ui::Gpu> gpu_;
   std::unique_ptr<MusContextFactory> compositor_context_factory_;
   base::WeakPtrFactory<WindowTreeClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeClient);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_MUS_WINDOW_TREE_CLIENT_H_