First export in commit 754c37901f
(Change-Id Ie16c8fbd777a51cebafd32cd1406907c763be975 ).
Language codes nan, nan-hani, nan-latn will be used for language
converter codes.
Bug: T354937
Bug: T370987
Change-Id: Ia87cfa3ec3a71e554ba767bacdb970549454aa93