[sysprof] theme: add row separator between visualizers

[Christian Hergert <chergert src gnome org>]

commit 9059b5f93acaf93ec552b1ef2258617e88a9e2ad
Author: Christian Hergert <chergert redhat com>
Date:   Fri May 18 16:36:37 2018 +0100

    theme: add row separator between visualizers

 lib/resources/css/SpVisualizerView-shared.css |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/lib/resources/css/SpVisualizerView-shared.css b/lib/resources/css/SpVisualizerView-shared.css
index 2546f89..0fd2f82 100644
--- a/lib/resources/css/SpVisualizerView-shared.css
+++ b/lib/resources/css/SpVisualizerView-shared.css
@@ -8,3 +8,6 @@ visualizers.selection:backdrop {
   background-color: alpha(@theme_selected_bg_color, 0.15);
   border: none;
 }
+visualizers list row:not(:first-child) {
+  border-top: 1px solid alpha(@borders, 0.4);
+}