shell: Use a busy cursor animation for unresponsive surfaces
diff --git a/clients/window.h b/clients/window.h
index 2521964..8b8e816 100644
--- a/clients/window.h
+++ b/clients/window.h
@@ -389,6 +389,9 @@
 struct widget *
 input_get_focus_widget(struct input *input);
 
+struct display *
+input_get_display(struct input *input);
+
 struct wl_seat *
 input_get_seat(struct input *input);