[gnome-music] Switch to Gtk.Stack instead of Gd.Stack

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit dc9227cffd224307e4bec9d7c3a7c252d718aed1
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Thu May 16 13:15:08 2013 +0200

    Switch to Gtk.Stack instead of Gd.Stack
    
    This bumps gtk requirement to 3.9 and fixes crossfade effect on opening album view
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700307

 configure.ac |    1 +
 src/view.js  |    4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f45d40c..3d1a7ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -27,6 +27,7 @@ PKG_PROG_PKG_CONFIG([0.22])
 
 GLIB_GSETTINGS
 GOBJECT_INTROSPECTION_REQUIRE([1.35.9])
+PKG_CHECK_MODULES([GTK], [gtk+-3.0 >= 3.9])
 
 AC_PATH_PROG([GJS],[gjs], [no])
 if test "$GJS" = "no" ; then
diff --git a/src/view.js b/src/view.js
index 3fe4b5d..89d5ff3 100644
--- a/src/view.js
+++ b/src/view.js
@@ -104,10 +104,10 @@ const LoadMoreButton = new Lang.Class({
 
 const ViewContainer = new Lang.Class({
     Name: "ViewContainer",
-    Extends: Gd.Stack,
+    Extends: Gtk.Stack,
 
     _init: function(title, header_bar) {
-        this.parent({transition_type: Gd.StackTransitionType.CROSSFADE});
+        this.parent({transition_type: Gtk.StackTransitionType.CROSSFADE});
         this._grid = new Gtk.Grid({orientation: Gtk.Orientation.VERTICAL})
         this._iconWidth = -1
         this._iconHeight = 128