[gnome-continuous] Add Graphene

[Emmanuele Bassi <ebassi src gnome org>]

commit 2d4d8cb098fac35bb71905c99d8eab6690a6975a
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Apr 20 14:23:05 2016 +0100

    Add Graphene
    
    It's (optionally) used by gst-plugins-bad, but GTK+ will depend on it
    for GSK.

 manifest.json |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 5d71270..73107a2 100644
--- a/manifest.json
+++ b/manifest.json
@@ -588,6 +588,8 @@
                                 "--disable-argyllcms-sensor",
                                 "--disable-installed-tests"]},
 
+                {"src": "git:https://github.com/ebassi/graphene.git"},
+
                {"src": "gnome:gconf",
                 "config-opts": ["--disable-orbit",
                                 "--disable-gtk",