[gnome-themes-standard] Style the pane separator in the file chooser

[William Jon McCann <mccann src gnome org>]

commit b294616e22e216da1daf3a53a0b1453ce9abbcee
Author: William Jon McCann <william jon mccann gmail com>
Date:   Wed Apr 9 10:54:26 2014 -0400

    Style the pane separator in the file chooser
    
    https://bugzilla.gnome.org/show_bug.cgi?id=728358

 themes/Adwaita/gtk-3.0/gtk-widgets.css |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)
---
diff --git a/themes/Adwaita/gtk-3.0/gtk-widgets.css b/themes/Adwaita/gtk-3.0/gtk-widgets.css
index e1ab26c..1a8c926 100644
--- a/themes/Adwaita/gtk-3.0/gtk-widgets.css
+++ b/themes/Adwaita/gtk-3.0/gtk-widgets.css
@@ -338,6 +338,21 @@ GtkTreeView.separator:backdrop,
     background-color: @theme_unfocused_base_color;
 }
 
+GtkFileChooser .pane-separator,
+GtkFileChooser .pane-separator:hover {
+    border-width: 0 1px 0 0;
+    border-style: solid;
+    border-color: @borders;
+    background-color: @sidebar_bg;
+    color: shade (@theme_bg_color, 0.9);
+}
+
+GtkFileChooser .pane-separator:backdrop,
+GtkFileChooser .pane-separator:hover:backdrop {
+    border-color: @unfocused_borders;
+    background-color: @sidebar_bg_unfocused;
+}
+
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