[gtk+] Use ::has-subtitle in testtitlebar

[Matthias Clasen <matthiasc src gnome org>]

commit 0191760bdc2a45d4f82af449c3bd4af5d49687a9
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Dec 10 23:00:04 2013 -0500

    Use ::has-subtitle in testtitlebar
    
    This also gets simplified.

 tests/testtitlebar.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)
---
diff --git a/tests/testtitlebar.c b/tests/testtitlebar.c
index cce9270..ac6fa79 100644
--- a/tests/testtitlebar.c
+++ b/tests/testtitlebar.c
@@ -23,12 +23,8 @@ main (int argc, char *argv[])
   gtk_header_bar_set_show_close_button (GTK_HEADER_BAR (header), TRUE);
   gtk_style_context_add_class (gtk_widget_get_style_context (header), "titlebar");
 
-  title = gtk_label_new (NULL);
-  gtk_label_set_markup (GTK_LABEL (title), "<b>Welcome to Facebook - Log in, sign up or learn more</b>");
-  gtk_label_set_ellipsize (GTK_LABEL (title), PANGO_ELLIPSIZE_END);
-  gtk_widget_set_margin_start (title, 6);
-  gtk_widget_set_margin_end (title, 6);
-  gtk_header_bar_set_custom_title (GTK_HEADER_BAR (header), title);
+  gtk_header_bar_set_title (GTK_HEADER_BAR (header), "Welcome to Facebook - Log in, sign up or learn more");
+  gtk_header_bar_set_has_subtitle (GTK_HEADER_BAR (header), FALSE);
 
   button = gtk_button_new ();
   icon = g_themed_icon_new ("mail-send-receive-symbolic");