aura-mus: add a drag representation image.

services/ui/ws/test_utils.cc

Index: services/ui/ws/test_utils.cc
diff --git a/services/ui/ws/test_utils.cc b/services/ui/ws/test_utils.cc
index 61d19322cad1653c407ee0b56d0ba205594548b2..b219307f57a34e9b427eddfb91ee73a616030ead 100644
--- a/services/ui/ws/test_utils.cc
+++ b/services/ui/ws/test_utils.cc
@@ -231,6 +231,19 @@ void TestWindowManager::WmCreateTopLevelWindow(
 void TestWindowManager::WmClientJankinessChanged(ClientSpecificId client_id,
                                                  bool janky) {}
 
+void TestWindowManager::WmBuildDragImage(const gfx::Point& screen_location,
+                                         const SkBitmap& drag_image,
+                                         const gfx::Vector2d& drag_image_offset,
+                                         ui::mojom::PointerKind source) {}
+
+void TestWindowManager::WmMoveDragImage(
+    const gfx::Point& screen_location,
+    const WmMoveDragImageCallback& callback) {
+  callback.Run();
+}
+
+void TestWindowManager::WmDestroyDragImage() {}
+
 void TestWindowManager::WmPerformMoveLoop(uint32_t change_id,
                                           uint32_t window_id,
                                           mojom::MoveLoopSource source,