mash: Port mojo:ash_sysui's ContextMenuMus to mojo:ash.

ash/mus/window_manager.h

 // Copyright 2015 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 ASH_MUS_WINDOW_MANAGER_H_
 #define ASH_MUS_WINDOW_MANAGER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 17 matching lines @@
 }
 
 namespace views {
 class PointerWatcherEventRouter;
 }
 
 namespace ash {
 namespace mus {
 
 class AcceleratorHandler;
+class NativeWidgetFactoryMus;
 class RootWindowController;
 class ShadowController;
 class WindowManagerObserver;
 class WmShellMus;
 class WmLookupMus;
 class WmTestHelper;
 
 // WindowManager serves as the WindowManagerDelegate and
 // WindowTreeClientDelegate for mash. WindowManager creates (and owns)
 // a RootWindowController per Display. WindowManager takes ownership of
@@ skipping 72 matching lines @@
   void OnWmCancelMoveLoop(ui::Window* window) override;
   ui::mojom::EventResult OnAccelerator(uint32_t id,
                                        const ui::Event& event) override;
 
   shell::Connector* connector_;
 
   ui::WindowTreeClient* window_tree_client_ = nullptr;
 
   ui::WindowManagerClient* window_manager_client_ = nullptr;
 
+  std::unique_ptr<NativeWidgetFactoryMus> native_widget_factory_mus_;
+
   std::unique_ptr<views::PointerWatcherEventRouter>
       pointer_watcher_event_router_;
 
   std::unique_ptr<ShadowController> shadow_controller_;
 
   std::set<std::unique_ptr<RootWindowController>> root_window_controllers_;
 
   base::ObserverList<WindowManagerObserver> observers_;
 
   std::unique_ptr<display::Screen> screen_;
 
   std::unique_ptr<WmShellMus> shell_;
 
   std::unique_ptr<WmLookupMus> lookup_;
 
   std::map<uint16_t, AcceleratorHandler*> accelerator_handlers_;
   uint16_t next_accelerator_namespace_id_ = 0u;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManager);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_WINDOW_MANAGER_H_