[gnome-control-center] printers: Add grid lines between items in "Add Printer" dialog

[Felipe Borges <felipeborges src gnome org>]

commit debb21d2540900f9df02a913db92e067d764f7da
Author: Felipe Borges <felipeborges gnome org>
Date:   Sat Sep 3 13:51:07 2016 +0200

    printers: Add grid lines between items in "Add Printer" dialog
    
    This is a redesign based on the newest mockups available at
    https://wiki.gnome.org/Design/SystemSettings/Printers#Guidelines
    
    https://bugzilla.gnome.org/show_bug.cgi?id=760783

 panels/printers/new-printer-dialog.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/panels/printers/new-printer-dialog.ui b/panels/printers/new-printer-dialog.ui
index 22693dc..f9ea7c7 100644
--- a/panels/printers/new-printer-dialog.ui
+++ b/panels/printers/new-printer-dialog.ui
@@ -115,6 +115,7 @@
                         <property name="can_focus">True</property>
                         <property name="model">devices-model-filter</property>
                         <property name="headers_visible">False</property>
+                        <property name="enable-grid-lines">GTK_TREE_VIEW_GRID_LINES_HORIZONTAL</property>
                         <child internal-child="selection">
                           <object class="GtkTreeSelection" id="treeview-selection"/>
                         </child>