[gnome-control-center] flatpak: Add mozjs52

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 6ae351ff46a2262aeec92bb0b44b08bc09133b2d
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Mon Sep 3 15:49:40 2018 +0200

    flatpak: Add mozjs52
    
    It is required by polkit.

 build-aux/flatpak/org.gnome.Settings.json | 37 +++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Settings.json b/build-aux/flatpak/org.gnome.Settings.json
index 127cdbaf4..d440b6a42 100644
--- a/build-aux/flatpak/org.gnome.Settings.json
+++ b/build-aux/flatpak/org.gnome.Settings.json
@@ -57,6 +57,43 @@
                 }
             ]
         },
+        {
+            "name" : "mozjs52",
+            "build-options" : {
+                "arch" : {
+                    "i386" : {
+                        "config-opts" : [
+                            "--host=i586-unknown-linux-gnu"
+                        ]
+                    },
+                    "arm" : {
+                        "config-opts" : [
+                            "--host=arm-unknown-linux-gnueabi"
+                        ]
+                    }
+                }
+            },
+            "config-opts": [
+                "--enable-posix-nspr-emulation",
+                "--with-system-zlib",
+                "--without-system-icu",
+                "--with-intl-api",
+                "--disable-jemalloc",
+                "AUTOCONF=autoconf"
+            ],
+            "builddir" : true,
+            "subdir" : "js/src",
+            "sources" : [
+                {
+                    "type" : "archive",
+                    "url" : 
"https://download.gnome.org/teams/releng/tarballs-needing-help/mozjs/mozjs-52.2.1gnome1.tar.gz";,
+                    "sha256" : "31697943b1dbbb51ba9aee35b8269a353c487d7af4d336010b90054dc4f9b0af"
+                }
+            ],
+            "cleanup" : [
+                "libjs_static.ajs"
+            ]
+        },
         {
             "name" : "polkit",
             "buildsystem" : "autotools",