[gnome-themes-standard] Add a better fallback for file chooser when it doesn't use headerbar

[William Jon McCann <mccann src gnome org>]

commit 3bc11395e70cb12a1e999415dabfb812cefda671
Author: William Jon McCann <william jon mccann gmail com>
Date:   Wed Apr 9 14:34:40 2014 -0400

    Add a better fallback for file chooser when it doesn't use headerbar
    
    https://bugzilla.gnome.org/show_bug.cgi?id=728358

 themes/Adwaita/gtk-3.0/gtk-widgets.css |   37 +++++++++++++++++++-------------
 1 files changed, 22 insertions(+), 15 deletions(-)
---
diff --git a/themes/Adwaita/gtk-3.0/gtk-widgets.css b/themes/Adwaita/gtk-3.0/gtk-widgets.css
index 1a8c926..2fb44ab 100644
--- a/themes/Adwaita/gtk-3.0/gtk-widgets.css
+++ b/themes/Adwaita/gtk-3.0/gtk-widgets.css
@@ -338,21 +338,6 @@ 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;
-}
-
 /****************
  * Text Entries *
  ****************/
@@ -2123,6 +2108,28 @@ GtkFileChooserButton GtkImage:last-child {
     color: @internal_element_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;
+}
+
+/* for fallback when header bar not used */
+GtkFileChooser .dialog-action-box {
+    border-width: 1px 0 0;
+    border-style: solid;
+    border-color: shade(@borders, 0.90);
+}
+
 /**************
  * Scrollbars *
  **************/