[libwnck] tasklist: set css name

[Marco Trevisan <marcotrevi src gnome org>]

commit 2a6fbef3e4b1f117dbc3993f55b1e725143dc16f
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Feb 6 14:44:38 2016 +0200

    tasklist: set css name
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761632

 libwnck/tasklist.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/libwnck/tasklist.c b/libwnck/tasklist.c
index 4f3966d..647266c 100644
--- a/libwnck/tasklist.c
+++ b/libwnck/tasklist.c
@@ -697,6 +697,10 @@ wnck_tasklist_class_init (WnckTasklistClass *klass)
                                                               "The final opacity that will be reached. 
Default: 0.8",
                                                               0.0, 1.0, 0.8,
                                                               
G_PARAM_READABLE|G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
+
+#if GTK_CHECK_VERSION (3, 19, 1)
+  gtk_widget_class_set_css_name (widget_class, "wnck-tasklist");
+#endif
 }
 
 static void