[gnome-contacts] Revert "window: make content_header_bar a GtkGrid"

[Emmanuele Bassi <ebassi src gnome org>]

commit eb8ecf0c3236fbd86a9917300716ef600602402c
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Feb 25 08:35:27 2016 +0000

    Revert "window: make content_header_bar a GtkGrid"
    
    This reverts commit 779912c2912e63ebf6c50e0722798f9ecfedc617.
    
    The commit breaks the build in Continuous (and locally), because of a
    reference to `content_header_bar` being a Gtk.Box:
    
    contacts-window.vala:54.3-54.32: error: cannot convert from Gtk child
    type `Gtk.Grid' to `Gtk.Box'
      private Box content_header_bar;
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        Compilation failed: 1 error(s), 140 warning(s)
    
    I'm reverting the commit as per:
    
      https://mail.gnome.org/archives/desktop-devel-list/2016-January/msg00015.html
    
    because the Continuous break has been failing for more than 4 hours.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761759

 data/ui/contacts-window.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/ui/contacts-window.ui b/data/ui/contacts-window.ui
index fb73f0c..5272ecd 100644
--- a/data/ui/contacts-window.ui
+++ b/data/ui/contacts-window.ui
@@ -157,7 +157,7 @@
       <widget name="done_button"/>
     </widgets>
   </object>
-  <object class="GtkGrid" id="content_header_bar">
+  <object class="GtkBox" id="content_header_bar">
     <property name="visible">True</property>
     <property name="can_focus">False</property>
     <child>