[gnome-sound-recorder] mainWindow.js: add a separator below the headerbar

[Meg Ford (Margaret) <megford src gnome org>]

commit 0f6f6224f7eff1a31d3ba983eba2d21007ae3a72
Author: Meg Ford <meg387 gmail com>
Date:   Wed Feb 19 13:42:32 2014 -0600

    mainWindow.js: add a separator below the headerbar

 src/mainWindow.js |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/mainWindow.js b/src/mainWindow.js
index fd65523..2f450fb 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -99,6 +99,7 @@ const MainWindow = new Lang.Class({
         let header = new Gtk.HeaderBar({ hexpand: true,
                                          show_close_button: true });
         this.set_titlebar(header);
+        header.get_style_context().add_class('titlebar');
 
         recordButton = new RecordButton({ label: _("Record"),
                                           margin_bottom: 4,