shell-gtk-embed: Lower tray icon windows to the bottom of the stack

Otherwise they break the "top level window" detection used by the
unredirect code in mutter, causes game windows not to be unredirected
when tray icons are present.

https://bugzilla.gnome.org/show_bug.cgi?id=701224

diff --git a/src/shell-gtk-embed.c b/src/shell-gtk-embed.c
index 045435eebc9f9b893d87de9ca444bb658cde7e8b..bfff044ffcf36c340ba38c55789f1419bf3dd783 100644 (file)
--- a/src/shell-gtk-embed.c
+++ b/src/shell-gtk-embed.c
@@ -106,6 +106,8 @@ shell_gtk_embed_window_created_cb (MetaDisplay   *display,
                                              0, 0 /* offset x/y */);
       cairo_region_destroy (empty_region);
 
+      gdk_window_lower (gdk_window);
+
       /* Now that we've found the window we don't need to listen for
          new windows anymore */
       g_signal_handler_disconnect (display,