[nautilus] pathbar: add slider-button class to sliders

[Carlos Soriano Sánchez <csoriano src gnome org>]

commit 00257f2a5f3706af247c54951b8719fc2939ad28
Author: Carlos Soriano <csoriano gnome org>
Date:   Mon Mar 21 20:55:34 2016 +0100

    pathbar: add slider-button class to sliders
    
    So they behave like the file chooser ones.

 src/nautilus-pathbar.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-pathbar.c b/src/nautilus-pathbar.c
index 59593ba..1fb2179 100644
--- a/src/nautilus-pathbar.c
+++ b/src/nautilus-pathbar.c
@@ -313,6 +313,10 @@ nautilus_path_bar_init (NautilusPathBar *path_bar)
 
         path_bar->priv->up_slider_button = get_slider_button (path_bar, "pan-start-symbolic");
         path_bar->priv->down_slider_button = get_slider_button (path_bar, "pan-end-symbolic");
+        gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET 
(path_bar->priv->up_slider_button)),
+                                     "slider-button");
+        gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET 
(path_bar->priv->down_slider_button)),
+                                     "slider-button");
 
         g_signal_connect_swapped (path_bar->priv->up_slider_button, "clicked", G_CALLBACK 
(nautilus_path_bar_scroll_up), path_bar);
         g_signal_connect_swapped (path_bar->priv->down_slider_button, "clicked", G_CALLBACK 
(nautilus_path_bar_scroll_down), path_bar);