[gnome-maps] MainWindow: Use the titlebar theme class

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit f65980d281cc81a4bbffaf23305bb261a65105c6
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Aug 7 18:07:07 2013 +0200

    MainWindow: Use the titlebar theme class
    
    I removed this from 9a41b7d before pushing cause it wasn't working for
    me. Turns out my issue was jhbuild building/installing
    gnome-themes-standard from my old branch.
    
    Was part of patch from Yosef Or Boczko <yoseforb gmail com>

 src/main-window.ui |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/main-window.ui b/src/main-window.ui
index 2199800..b7d833b 100644
--- a/src/main-window.ui
+++ b/src/main-window.ui
@@ -25,6 +25,9 @@
         <property name="visible">True</property>
         <property name="can_focus">False</property>
         <property name="show_close_button">True</property>
+        <style>
+          <class name="titlebar"/>
+        </style>
         <child type="title">
           <object class="GtkSearchEntry" id="search-entry">
             <property name="visible">True</property>