[gnome-shell/wip/sass] Why do we need this to have focus on folders?

[Jakub Steiner <jimmac src gnome org>]

commit 5694646dbdd01b3ee5d543e1ba5ba1ec0841dc79
Author: Carlos Soriano <carlos soriano89 gmail com>
Date:   Sat Oct 25 20:26:15 2014 +0200

    Why do we need this to have focus on folders?

 data/theme/gnome-shell.css |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/data/theme/gnome-shell.css b/data/theme/gnome-shell.css
index 5e48082..dbc0bc9 100644
--- a/data/theme/gnome-shell.css
+++ b/data/theme/gnome-shell.css
@@ -1471,6 +1471,13 @@ StScrollBar {
   border-image: none;
   background-image: none; }
 
+.app-well-app.app-folder:focus > .overview-icon,
+.app-well-app.app-folder:hover > .overview-icon {
+  background-color: rgba(238, 238, 236, 0.1);
+  transition-duration: 200ms;
+  border-image: none;
+  background-image: none; }
+
 .app-well-app-running-dot {
   width: 10px;
   height: 3px;