l10n: Fix keyboard layout pattern for US extended keyboard.

US Extended Keyboard is using layout 'xkb:us:altgr-intl:eng' so we have
to support dash in the third element of keyboard layout pattern.

TEST=make test

Change-Id: I60cb5357bd7caffe1be7d35fa804829f50b558ff
Reviewed-on: https://chromium-review.googlesource.com/456988
Commit-Ready: Hung-Te Lin <hungte@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Chih-Yu Huang <akahuang@chromium.org>
(cherry picked from commit d720c32e0df033a9e933dd911db560585bcd2e6d)
Reviewed-on: https://chromium-review.googlesource.com/458036
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
1 file changed