aura-mus: add a drag representation image.

services/ui/ws/test_utils.cc

 // Copyright 2016 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.
 
 #include "services/ui/ws/test_utils.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 213 matching lines @@
     uint32_t change_id,
     ClientSpecificId requesting_client_id,
     const std::unordered_map<std::string, std::vector<uint8_t>>& properties) {
   got_create_top_level_window_ = true;
   change_id_ = change_id;
 }
 
 void TestWindowManager::WmClientJankinessChanged(ClientSpecificId client_id,
                                                  bool janky) {}
 
+void TestWindowManager::WmBuildDragImage(const gfx::Point& cursor_location,
+                                         const SkBitmap& drag_image,
+                                         const gfx::Vector2d& drag_image_offset,
+                                         ui::mojom::DragEventSource source) {}
+
+void TestWindowManager::WmMoveDragImage(
+    const gfx::Point& cursor_location,
+    const WmMoveDragImageCallback& callback) {
+  callback.Run();
+}
+
+void TestWindowManager::WmDestroyDragImage() {}
+
 void TestWindowManager::WmPerformMoveLoop(uint32_t change_id,
                                           uint32_t window_id,
                                           mojom::MoveLoopSource source,
                                           const gfx::Point& cursor_location) {
   on_perform_move_loop_called_ = true;
 }
 
 void TestWindowManager::WmCancelMoveLoop(uint32_t window_id) {}
 
 void TestWindowManager::WmDeactivateWindow(uint32_t window_id) {}
@@ skipping 401 matching lines @@
   if (!tree->AddWindow(parent_client_id, client_window_id))
     return nullptr;
   if (client_id)
     *client_id = client_window_id;
   return tree->GetWindowByClientId(client_window_id);
 }
 
 }  // namespace test
 }  // namespace ws
 }  // namespace ui