StructTraits to map mus::mojom::Event to unique_ptr<ui::Event>

ui/views/mus/native_widget_mus_unittest.cc

Index: ui/views/mus/native_widget_mus_unittest.cc
diff --git a/ui/views/mus/native_widget_mus_unittest.cc b/ui/views/mus/native_widget_mus_unittest.cc
index 716fc99aa90f7ecc2e9b263d5d1097380be38866..8a8e6814a667656388476c23cb2a429741f0f759 100644
--- a/ui/views/mus/native_widget_mus_unittest.cc
+++ b/ui/views/mus/native_widget_mus_unittest.cc
@@ -417,7 +417,7 @@ TEST_F(NativeWidgetMusTest, WidgetReceivesEvent) {
   NativeWidgetMus* native_widget =
       static_cast<NativeWidgetMus*>(widget->native_widget_private());
   mus::WindowTreeClientPrivate test_api(native_widget->window());
-  test_api.CallOnWindowInputEvent(native_widget->window(), *mouse);
+  test_api.CallOnWindowInputEvent(native_widget->window(), std::move(mouse));
   EXPECT_EQ(1, handler.num_mouse_events());
 }