[epiphany] flatpak: enable libdazzle debugging

[Michael Catanzaro <mcatanzaro src gnome org>]

commit e1cf29f86b1071a7c2ea696ffc586c1dfb6f4e64
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Fri Oct 19 14:43:57 2018 -0500

    flatpak: enable libdazzle debugging
    
    We are trying to debug some issues with DzlSuggestionEntry. This should
    help.

 org.gnome.Epiphany.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/org.gnome.Epiphany.json b/org.gnome.Epiphany.json
index 2a595857b..712ce68f1 100644
--- a/org.gnome.Epiphany.json
+++ b/org.gnome.Epiphany.json
@@ -46,7 +46,8 @@
         {
             "name" : "libdazzle",
             "config-opts" : [
-                "--libdir=/app/lib"
+                "--libdir=/app/lib",
+                "-Denable_tracing=true"
             ],
             "buildsystem" : "meson",
             "builddir" : true,