[gnome-documents] gd-nav-bar: Set linked styleclass on the buttons

[Debarshi Ray <debarshir src gnome org>]

commit 395c0f900362be021f799222957e819f8134d3f1
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Wed Mar 16 17:11:22 2016 +0100

    gd-nav-bar: Set linked styleclass on the buttons

 src/lib/gd-nav-bar.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/lib/gd-nav-bar.c b/src/lib/gd-nav-bar.c
index 7552966..beec7b9 100644
--- a/src/lib/gd-nav-bar.c
+++ b/src/lib/gd-nav-bar.c
@@ -1047,6 +1047,8 @@ gd_nav_bar_init (GdNavBar *self)
         gtk_container_add (GTK_CONTAINER (self), inner_box);
 
         priv->button_area = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+        gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (priv->button_area)),
+                                     GTK_STYLE_CLASS_LINKED);
         gtk_widget_show (priv->button_area);
         gtk_box_pack_start (GTK_BOX (inner_box), priv->button_area, FALSE, FALSE, 0);