[gnome-builder/wip/vim] prefs: use headerbar for prefs window.

[Christian Hergert <chergert src gnome org>]

commit 0596fa83177547f6d682897397ae00ba97a28026
Author: Christian Hergert <christian hergert me>
Date:   Thu Oct 2 18:54:31 2014 -0700

    prefs: use headerbar for prefs window.

 src/resources/ui/gb-preferences-window.ui |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/resources/ui/gb-preferences-window.ui b/src/resources/ui/gb-preferences-window.ui
index b2d98ac..73dba69 100644
--- a/src/resources/ui/gb-preferences-window.ui
+++ b/src/resources/ui/gb-preferences-window.ui
@@ -7,6 +7,13 @@
     <property name="default-width">800</property>
     <property name="default-height">500</property>
     <property name="window-position">GTK_WIN_POS_CENTER_ON_PARENT</property>
+    <child type="titlebar">
+      <object class="GtkHeaderBar" id="header_bar">
+        <property name="visible">True</property>
+        <property name="title" translatable="yes">Preferences</property>
+        <property name="show-close-button">True</property>
+      </object>
+    </child>
     <child>
       <object class="GtkBox" id="hbox1">
         <property name="expand">True</property>