[gtk+] Adwaita: add a top border to actionbars

[Lapo Calamandrei <lapo src gnome org>]

commit 8508ea1554d6a2767319170a8e72f60398106630
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Tue Mar 8 20:09:18 2016 +0100

    Adwaita: add a top border to actionbars

 gtk/theme/Adwaita/_common.scss           |    6 +++---
 gtk/theme/Adwaita/gtk-contained-dark.css |    4 +++-
 gtk/theme/Adwaita/gtk-contained.css      |    4 +++-
 3 files changed, 9 insertions(+), 5 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 422ecff..b80a296 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -2972,7 +2972,9 @@ frame border,
 
 actionbar > revealer >  box {
   padding: 6px;
-  border-width: 1px 0 0;
+  border-top: 1px solid $borders_color;
+
+  &:backdrop { border-color: $backdrop_borders_color; }
 }
 
 placessidebar,
@@ -3245,8 +3247,6 @@ filechooser {
   }
 
   #pathbarbox { border-bottom: 1px solid $bg_color; }
-
-  actionbar > revealer > box { border-top: 1px solid $borders_color; } // this is the bottom bar when present
 }
 
 
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index fc100dd..2cae3f1 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -3320,7 +3320,9 @@ frame border,
 
 actionbar > revealer > box {
   padding: 6px;
-  border-width: 1px 0 0; }
+  border-top: 1px solid #1c1f1f; }
+  actionbar > revealer > box:backdrop {
+    border-color: #1f2222; }
 
 placessidebar viewport.frame,
 scrolledwindow viewport.frame {
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 7c42123..4b4d800 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -3351,7 +3351,9 @@ frame border,
 
 actionbar > revealer > box {
   padding: 6px;
-  border-width: 1px 0 0; }
+  border-top: 1px solid #9d9d99; }
+  actionbar > revealer > box:backdrop {
+    border-color: #a5a5a1; }
 
 placessidebar viewport.frame,
 scrolledwindow viewport.frame {