[gnome-control-center] wacom: add the LINKED style class to the navigation widget

[Cosimo Cecchi <cosimoc src gnome org>]

commit 5b86a93dfd709b0eb762acd07f0dd347b1fd6a0e
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Nov 28 14:52:24 2011 -0500

    wacom: add the LINKED style class to the navigation widget
    
    GTK+ defines a LINKED style class for linked containers now; set it on
    the navigation widget so that the theme can render the buttons
    connected.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=665079

 panels/wacom/cc-wacom-nav-button.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/panels/wacom/cc-wacom-nav-button.c b/panels/wacom/cc-wacom-nav-button.c
index e63a680..b90e037 100644
--- a/panels/wacom/cc-wacom-nav-button.c
+++ b/panels/wacom/cc-wacom-nav-button.c
@@ -201,9 +201,12 @@ static void
 cc_wacom_nav_button_init (CcWacomNavButton *self)
 {
 	CcWacomNavButtonPrivate *priv;
+	GtkStyleContext *context;
 	GtkWidget *image;
 
 	priv = self->priv = WACOM_NAV_BUTTON_PRIVATE (self);
+	context = gtk_widget_get_style_context (GTK_WIDGET (self));
+	gtk_style_context_add_class (context, GTK_STYLE_CLASS_LINKED);
 
 	priv->prev = gtk_button_new ();
 	image = gtk_image_new_from_icon_name ("go-previous-symbolic", GTK_ICON_SIZE_MENU);