[gnome-games/wip/exalm/dconf] flatpak: Migrate settings from dconf

[Alexander Mikhaylenko <alexm src gnome org>]

commit 3473bd0455fd278bef501e068ee7fe0a59c5d678
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Sat Jul 20 20:21:44 2019 +0500

    flatpak: Migrate settings from dconf

 flatpak/org.gnome.Games.json | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)
---
diff --git a/flatpak/org.gnome.Games.json b/flatpak/org.gnome.Games.json
index 280c7754..22107e90 100644
--- a/flatpak/org.gnome.Games.json
+++ b/flatpak/org.gnome.Games.json
@@ -26,11 +26,6 @@
         /* Tracker access */
         "--talk-name=org.freedesktop.Tracker1",
         "--env=TRACKER_SPARQL_BACKEND=bus",
-        /* Needed for dconf to work */
-        "--filesystem=xdg-run/dconf",
-        "--filesystem=~/.config/dconf:ro",
-        "--talk-name=ca.desrt.dconf",
-        "--env=DCONF_USER_CONFIG_DIR=.config/dconf",
         /* Needed to get the games info from The Games DB */
         "--share=network",
         /* Needed for joypads, until we have a proper portal */
@@ -40,7 +35,9 @@
         /* Needed to find the ROMs */
         "--filesystem=host:ro",
         /* Needed to find flatpaked Steam games */
-        "--filesystem=~/.var/app/com.valvesoftware.Steam:ro"
+        "--filesystem=~/.var/app/com.valvesoftware.Steam:ro",
+        /* Settings migration */
+        "--metadata=X-DConf=migrate-path=/org/gnome/Games/"
     ],
     "build-options" : {
         "cflags" : "-O2 -g",