[gtk/overlay-cleanup] testoverlay: Use gtk_widget_set_can_pick

[Matthias Clasen <matthiasc src gnome org>]

commit f8609efa2bd47b337e0c415fcfed01c2e24f62af
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Feb 21 21:55:05 2019 -0500

    testoverlay: Use gtk_widget_set_can_pick
    
    Use gtk_widget_set_can_pick instead of the
    overlay-specific api with the same purpose.

 tests/testoverlay.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tests/testoverlay.c b/tests/testoverlay.c
index cee2f4344a..16835c06fe 100644
--- a/tests/testoverlay.c
+++ b/tests/testoverlay.c
@@ -459,7 +459,7 @@ test_input_stacking (void)
 
   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
   gtk_overlay_add_overlay (GTK_OVERLAY (overlay), vbox);
-  gtk_overlay_set_overlay_pass_through (GTK_OVERLAY (overlay), vbox, TRUE);
+  gtk_widget_set_can_pick (vbox, FALSE);
   gtk_widget_set_halign (vbox, GTK_ALIGN_CENTER);
   gtk_widget_set_valign (vbox, GTK_ALIGN_CENTER);