[gtk+] csd: Drop the GTK_FRAME_EXTENTS requirement

[Matthias Clasen <matthiasc src gnome org>]

commit fb9a6bb6d8d6b60b25c9b9853decbcea938f7863
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Apr 4 01:28:09 2014 -0400

    csd: Drop the GTK_FRAME_EXTENTS requirement
    
    We are getting bug reports from people who are irritated that
    dialogs now have 'double headers' under any wm but gnome-shell.
    
    As an example, xfwm4 seems to do ok with csd windows, and
    on balance it seems better to have some invisible border issues
    than to have double headers.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=727414

 gtk/gtkwindow.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index bc9f8de..d791186 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -3615,9 +3615,6 @@ gdk_window_supports_csd (GtkWindow *window)
       if (!gdk_screen_is_composited (screen))
         return FALSE;
 
-      if (!gdk_x11_screen_supports_net_wm_hint (screen, gdk_atom_intern_static_string 
("_GTK_FRAME_EXTENTS")))
-        return FALSE;
-
       /* We need a visual with alpha */
       visual = gdk_screen_get_rgba_visual (screen);
       if (!visual)