Implement aura::WindowPortMus::CreateCompositorFrameSink()

services/ui/ws/window_tree.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 SERVICES_UI_WS_WINDOW_TREE_H_
 #define SERVICES_UI_WS_WINDOW_TREE_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 484 matching lines @@
       const SkBitmap& drag_image,
       const gfx::Vector2d& drag_image_offset,
       uint32_t drag_operation,
       ui::mojom::PointerKind source) override;
   void CancelDragDrop(Id window_id) override;
   void PerformWindowMove(uint32_t change_id,
                          Id window_id,
                          ui::mojom::MoveLoopSource source,
                          const gfx::Point& cursor) override;
   void CancelWindowMove(Id window_id) override;
+  void GetFrameSinkId(Id window_id) override;
 
   // mojom::WindowManagerClient:
   void AddAccelerators(std::vector<mojom::WmAcceleratorPtr> accelerators,
                        const AddAcceleratorsCallback& callback) override;
   void RemoveAccelerator(uint32_t id) override;
   void AddActivationParent(Id transport_window_id) override;
   void RemoveActivationParent(Id transport_window_id) override;
   void ActivateNextWindow() override;
   void SetExtendedHitArea(Id window_id, const gfx::Insets& hit_area) override;
   void SetDisplayRoot(const display::Display& display,
@@ skipping 130 matching lines @@
   // a image move. All weak ptrs are invalidated when a drag is completed.
   base::WeakPtrFactory<WindowTree> drag_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTree);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_TREE_H_