[gtk+] Add top/bottom style classes to scroll arrows

[Matthias Clasen <matthiasc src gnome org>]

commit dcf80f3df555e1026a37cf7108e411584080d033
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Oct 10 07:43:36 2014 -0400

    Add top/bottom style classes to scroll arrows

 gtk/gtkmenu.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkmenu.c b/gtk/gtkmenu.c
index 2991136..270fbec 100644
--- a/gtk/gtkmenu.c
+++ b/gtk/gtkmenu.c
@@ -3083,6 +3083,7 @@ gtk_menu_draw (GtkWidget *widget,
         {
           gtk_style_context_save (context);
           gtk_style_context_set_state (context, priv->upper_arrow_state);
+          gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP);
 
           gtk_render_background (context, cr,
                                  upper.x, upper.y,
@@ -3103,6 +3104,7 @@ gtk_menu_draw (GtkWidget *widget,
         {
           gtk_style_context_save (context);
           gtk_style_context_set_state (context, priv->lower_arrow_state);
+          gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM);
 
           gtk_render_background (context, cr,
                                  lower.x, lower.y,