[gtk+] Adwaita: Update flowbox rubberband styling

[Matthias Clasen <matthiasc src gnome org>]

commit f6201e4ccd129c9d8ca172cb5200abd2eaa42334
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Nov 10 00:52:09 2015 -0500

    Adwaita: Update flowbox rubberband styling
    
    Adapt to the changes in the previous commit.

 gtk/theme/Adwaita/_common.scss           |    4 ++++
 gtk/theme/Adwaita/gtk-contained-dark.css |    1 +
 gtk/theme/Adwaita/gtk-contained.css      |    1 +
 3 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index b49bae7..8f4fd0e 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -126,6 +126,10 @@ rubberband {
   background-color: transparentize(darken($selected_bg_color, 10%), 0.8);
 }
 
+flowbox {
+  & rubberband { @extend rubberband; }
+}
+
 label {
   &.separator {
     color: $fg_color;
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index f5c51e1..c112f8a 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -79,6 +79,7 @@ textview text,
 
 .rubberband,
 rubberband,
+flowbox rubberband,
 treeview.view.rubberband,
 .content-view rubberband {
   border: 1px solid #184472;
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 0c15268..8d4aefa 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -79,6 +79,7 @@ textview text,
 
 .rubberband,
 rubberband,
+flowbox rubberband,
 treeview.view.rubberband,
 .content-view rubberband {
   border: 1px solid #2a76c6;