[gnome-shell-sass] Add level bar styling

[Cosimo Cecchi <cosimoc src gnome org>]

commit 31aac7f7b524786965e4c9a1890009ea362b9c87
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sat Nov 21 13:20:25 2015 -0800

    Add level bar styling
    
    https://bugzilla.gnome.org/show_bug.cgi?id=758471

 _common.scss |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/_common.scss b/_common.scss
index e2ce5d5..a974988 100644
--- a/_common.scss
+++ b/_common.scss
@@ -587,6 +587,10 @@ StScrollBar {
     background-color: transparentize(darken($osd_bg_color,15%),0.5);
     color: $osd_fg_color;
   }
+  .level-bar {
+    background-color: $osd_fg_color;
+    border-radius: 0.3em;
+  }
 }
 
 /* App Switcher */