There's a remapping done from "sr-ME" to "me" in several places, but it seems that no package is using "sr-ME" as L10N value any more. Furthermore, the Montenegrin language has obtained an official ISO 639-2 code quite recently (2017-12-21), namely "cnr": http://www-01.sil.org/iso639-3/documentation.asp?id=cnr I would suggest to drop the old remapping for now, and re-add one for "cnr" if that should become necessary.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a4c59ca35d1c8e916baec83775a60ac7c66c100d commit a4c59ca35d1c8e916baec83775a60ac7c66c100d Author: Mike Gilbert <floppym@gentoo.org> AuthorDate: 2018-01-06 21:44:53 +0000 Commit: Mike Gilbert <floppym@gentoo.org> CommitDate: 2018-01-06 21:48:48 +0000 chromium-2.eclass: drop sr-ME workaround code Closes: https://bugs.gentoo.org/583762 Closes: https://bugs.gentoo.org/643736 eclass/chromium-2.eclass | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-)