aura-mus: add a drag representation image.

services/ui/ws/window_server_test_base.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 SERVICES_UI_WS_WINDOW_SERVER_TEST_BASE_H_
 #define SERVICES_UI_WS_WINDOW_SERVER_TEST_BASE_H_
 
 #include <memory>
 #include <set>
 
@@ skipping 82 matching lines @@
       aura::Window* window,
       const std::string& name,
       std::unique_ptr<std::vector<uint8_t>>* new_data) override;
   void OnWmSetModalType(aura::Window* window, ui::ModalType type) override;
   void OnWmSetCanFocus(aura::Window* window, bool can_focus) override;
   aura::Window* OnWmCreateTopLevelWindow(
       ui::mojom::WindowType window_type,
       std::map<std::string, std::vector<uint8_t>>* properties) override;
   void OnWmClientJankinessChanged(const std::set<aura::Window*>& client_windows,
                                   bool not_responding) override;
+  void OnWmBuildDragImage(const gfx::Point& cursor_location,
+                          const SkBitmap& drag_image,
+                          const gfx::Vector2d& drag_image_offset,
+                          ui::mojom::DragEventSource source) override {}
+  void OnWmMoveDragImage(const gfx::Point& cursor_location) override {}
+  void OnWmDestroyDragImage() override {}
   void OnWmWillCreateDisplay(const display::Display& display) override;
   void OnWmNewDisplay(std::unique_ptr<aura::WindowTreeHostMus> window_tree_host,
                       const display::Display& display) override;
   void OnWmDisplayRemoved(aura::WindowTreeHostMus* window_tree_host) override;
   void OnWmDisplayModified(const display::Display& display) override;
   mojom::EventResult OnAccelerator(
       uint32_t accelerator_id,
       const ui::Event& event,
       std::unordered_map<std::string, std::vector<uint8_t>>* properties)
       override;
@@ skipping 39 matching lines @@
   aura::WindowManagerClient* window_manager_client_ = nullptr;
 
   bool window_tree_client_lost_connection_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(WindowServerTestBase);
 };
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_SERVER_TEST_BASE_H_