mus ws: Consistently use mojom::Cursor instead of int32_t.

services/ui/ws/window_tree_unittest.cc

Index: services/ui/ws/window_tree_unittest.cc
diff --git a/services/ui/ws/window_tree_unittest.cc b/services/ui/ws/window_tree_unittest.cc
index 9cddc174206cca41dc29a39838eadd0e3d95152b..b40f65927b9bb11f514ed6a67929da2438a684ce 100644
--- a/services/ui/ws/window_tree_unittest.cc
+++ b/services/ui/ws/window_tree_unittest.cc
@@ -131,8 +131,7 @@ class WindowTreeTest : public testing::Test {
   ~WindowTreeTest() override {}
 
   ui::mojom::Cursor cursor_id() {
-    return static_cast<ui::mojom::Cursor>(
-        window_event_targeting_helper_.cursor_id());
+    return window_event_targeting_helper_.cursor();
   }
   Display* display() { return window_event_targeting_helper_.display(); }
   TestWindowTreeBinding* last_binding() {