[gnome-contacts] Fix ui changes breaking the build

[Erick Pérez Castellanos <erickpc src gnome org>]

commit 1ad0302ed5fca8d1f594a1f3dc3b9240f39e4931
Author: Erick Perez Castellanos <erick red gmail com>
Date:   Thu Feb 25 09:50:06 2016 -0600

    Fix ui changes breaking the build

 src/contacts-window.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/contacts-window.vala b/src/contacts-window.vala
index c49d6a7..8035e16 100644
--- a/src/contacts-window.vala
+++ b/src/contacts-window.vala
@@ -51,7 +51,7 @@ public class Contacts.Window : Gtk.ApplicationWindow {
   private Stack view_switcher;
 
   [GtkChild]
-  private Box content_header_bar;
+  private Grid  content_header_bar;
 
   [GtkChild]
   private HeaderBar setup_header_bar;