[epiphany] Set floating bar to pass through

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2902db808003af8290c8b92cd427452dcac7e86e
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Tue Dec 25 11:07:01 2018 +0100

    Set floating bar to pass through
    
    Allow horizontal scrollbar interaction even in cases where a very long link preview
    overlays the scrollbar.
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/issues/428

 embed/ephy-embed.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/embed/ephy-embed.c b/embed/ephy-embed.c
index 2360a574d..1a3f3c278 100644
--- a/embed/ephy-embed.c
+++ b/embed/ephy-embed.c
@@ -750,6 +750,7 @@ ephy_embed_constructed (GObject *object)
   gtk_widget_set_no_show_all (embed->floating_bar, TRUE);
 
   gtk_overlay_add_overlay (GTK_OVERLAY (embed->overlay), embed->floating_bar);
+  gtk_overlay_set_overlay_pass_through (GTK_OVERLAY (embed->overlay), embed->floating_bar, TRUE);
 
   if (embed->progress_bar_enabled) {
     embed->progress = gtk_progress_bar_new ();