[gnome-maps] application: Force the X11 clutter backend.

[Marcus Lundblad <mlundblad src gnome org>]

commit 178b3cb7230804dbcf01da81dbd43751581ab223
Author: Marcus Lundblad <ml update uu se>
Date:   Thu May 28 21:41:55 2015 +0200

    application: Force the X11 clutter backend.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=750059

 src/application.js |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/application.js b/src/application.js
index 375633f..c6a6b59 100644
--- a/src/application.js
+++ b/src/application.js
@@ -20,6 +20,7 @@
  *         Zeeshan Ali (Khattak) <zeeshanak gnome org>
  */
 
+const Clutter = imports.gi.Clutter;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const Gio = imports.gi.Gio;
@@ -172,6 +173,8 @@ const Application = new Lang.Class({
     vfunc_startup: function() {
         this.parent();
 
+       // work-around for the Nvidia proprietary driver not coping with the GDK Clutter backend
+       Clutter.set_windowing_backend('x11');
         GtkClutter.init(null);
 
         Utils.loadStyleSheet(Gio.file_new_for_uri('resource:///org/gnome/Maps/application.css'));