Chromium change:
https://source.chromium.org/chromium/chromium/src/+/19bd6c6cc41a4e5f41a61a8acb88e0337763e733
commit 19bd6c6cc41a4e5f41a61a8acb88e0337763e733
Author: Matt Stark <msta@google.com>
Date: Wed Feb 17 08:47:48 2021 +0000
Replace fake-bidi with the pseuduolocales en-XA and ar-XB
These pseudolocales have better translations, are not broken, and have a
consistent naming scheme with android pseudolocales.
BUG=chromium:1173812