[gtk+] revealer: Use an element name

[Matthias Clasen <matthiasc src gnome org>]

commit d40576fb3ee748d633f7c3c0a57be5120edc2cff
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 4 10:11:06 2015 -0500

    revealer: Use an element name

 gtk/gtkrevealer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkrevealer.c b/gtk/gtkrevealer.c
index 9076b58..496ffe2 100644
--- a/gtk/gtkrevealer.c
+++ b/gtk/gtkrevealer.c
@@ -262,6 +262,8 @@ gtk_revealer_class_init (GtkRevealerClass *klass)
                           G_PARAM_READABLE);
 
   g_object_class_install_properties (object_class, LAST_PROP, props);
+
+  gtk_widget_class_set_css_name (widget_class, "revealer");
 }
 
 /**