[gnome-shell] theme: Restore drag effect between workspaces

[Alessandro Bono <abono src gnome org>]

commit fa276a3349aaf716cad84679a11544f148159911
Author: Alessandro Bono <abono gnome org>
Date:   Thu Oct 26 19:09:37 2017 +0200

    theme: Restore drag effect between workspaces
    
    When dragging a window between two workspaces a light effect used
    to be present. The effect was lost probably during the theme revamp
    in version 3.16.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=789103

 data/theme/gnome-shell-high-contrast.css |    4 ++++
 data/theme/gnome-shell-sass              |    2 +-
 data/theme/gnome-shell.css               |    4 ++++
 3 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/data/theme/gnome-shell-high-contrast.css b/data/theme/gnome-shell-high-contrast.css
index 51477e7..a2167be 100644
--- a/data/theme/gnome-shell-high-contrast.css
+++ b/data/theme/gnome-shell-high-contrast.css
@@ -1339,6 +1339,10 @@ StScrollBar {
   border-radius: 9px 0 0 9px; }
   .workspace-thumbnails:rtl {
     border-radius: 0 9px 9px 0; }
+  .workspace-thumbnails .placeholder {
+    background-image: url("resource:///org/gnome/shell/theme/dash-placeholder.svg");
+    background-size: contain;
+    height: 24px; }
 
 .workspace-thumbnail-indicator {
   border: 4px solid #215d9c;
diff --git a/data/theme/gnome-shell-sass b/data/theme/gnome-shell-sass
index 336c2d5..de41fb4 160000
--- a/data/theme/gnome-shell-sass
+++ b/data/theme/gnome-shell-sass
@@ -1 +1 @@
-Subproject commit 336c2d5ad6b165f586330ec7e1fdc23ff220638a
+Subproject commit de41fb43a58e3b10b9f7df83904bd9e0e381637b
diff --git a/data/theme/gnome-shell.css b/data/theme/gnome-shell.css
index 6aab708..c56a3b7 100644
--- a/data/theme/gnome-shell.css
+++ b/data/theme/gnome-shell.css
@@ -1339,6 +1339,10 @@ StScrollBar {
   border-radius: 9px 0 0 9px; }
   .workspace-thumbnails:rtl {
     border-radius: 0 9px 9px 0; }
+  .workspace-thumbnails .placeholder {
+    background-image: url("resource:///org/gnome/shell/theme/dash-placeholder.svg");
+    background-size: contain;
+    height: 24px; }
 
 .workspace-thumbnail-indicator {
   border: 4px solid #215d9c;