[views-mus] Support custom cursors.

ui/aura/test/mus/test_window_tree.cc

Index: ui/aura/test/mus/test_window_tree.cc
diff --git a/ui/aura/test/mus/test_window_tree.cc b/ui/aura/test/mus/test_window_tree.cc
index 603d61ae3693d9fca56f8dff8bd05cf89f6f4842..c327cc822652e37eeb537de853db0d3990ca3b3c 100644
--- a/ui/aura/test/mus/test_window_tree.cc
+++ b/ui/aura/test/mus/test_window_tree.cc
@@ -254,9 +254,9 @@ void TestWindowTree::SetEventTargetingPolicy(
     uint32_t window_id,
     ui::mojom::EventTargetingPolicy policy) {}
 
-void TestWindowTree::SetPredefinedCursor(uint32_t change_id,
-                                         uint32_t window_id,
-                                         ui::mojom::CursorType cursor_id) {
+void TestWindowTree::SetCursor(uint32_t change_id,
+                               Id transport_window_id,
+                               ui::CursorData cursor_id) {
   OnChangeReceived(change_id);
 }