mac: Fix SystemSnapshotMacTest.TimeZone on macOS 10.12.4
mac: Fix SystemSnapshotMacTest.TimeZone on macOS 10.12.4

macOS 10.12.4 includes an updated timezone database. Abbreviations for
Australia/Eucla (formerly ACWST, now +0845) and Australia/Lord_Howe
(formerly LHST/LHDT, now +1030/+11) were dropped in IANA TZ 2017a. The
test is updated so that the abbreviations for these two time zones are
no longer checked.

References:
https://github.com/eggert/tz/commit/a25d615495c57081297939b4befe6f9b6bf438ea
https://mm.icann.org/pipermail/tz/2017-February/024837.html

Test: crashpad_snapshot_test SystemSnapshotMacTest.TimeZone
Change-Id: I2845c6aee7b7b6a8fcdc6faa4d5cefe5e0f72e5c
Reviewed-on: https://chromium-review.googlesource.com/461500
Reviewed-by: Scott Graham <e134406e1863f3b48b0795831afac5c0595efb36@chromium.org>

atom/crashpad,chromium/crashpad,chromium/crashpad,atom/crashpad,chromium/crashpad,atom/crashpad