tags 886358 +patch thanks
I tested this with my local build, and it works for me(tm) with attached simple patch.
--- debian-1~deb9u1/debian/rules 2017-12-03 17:26:02.000000000 +0200 +++ debian-b/debian/rules 2018-01-07 10:17:25.029550638 +0200 @@ -47,7 +47,7 @@ enable_nacl=false \ enable_nacl_nonsfi=false \ enable_google_now=false \ - enable_hangout_services_extension=false \ + enable_hangout_services_extension=true \ enable_iterator_debugging=false \ goma_dir=\"\" \ gold_path=\"\" \