[epiphany/gnome-3-28] Try enabling MSE

[Michael Catanzaro <mcatanzaro src gnome org>]

commit d564aba7f3fa0c744e995001c30664be3908c0e0
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue Sep 18 13:01:50 2018 -0500

    Try enabling MSE
    
    This is broken and not ready to be enabled, but we think YouTube has
    begun to require MSE to access WebM videos. So we're left with no
    real choice here.

 embed/ephy-embed-prefs.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/embed/ephy-embed-prefs.c b/embed/ephy-embed-prefs.c
index 0ce447f30..7b34f3a2f 100644
--- a/embed/ephy-embed-prefs.c
+++ b/embed/ephy-embed-prefs.c
@@ -431,6 +431,7 @@ ephy_embed_prefs_init (gpointer user_data)
                                                        "enable-fullscreen", TRUE,
                                                        "enable-javascript", TRUE,
                                                        "enable-dns-prefetching", TRUE,
+                                                       "enable-mediasource", TRUE,
                                                        "javascript-can-open-windows-automatically", TRUE,
                                                        NULL);