GitLab

Adds Fuchsia support to InitializeIcuTimeZone() and implements
TimeZoneMonitorFuchsia.

This causes Chrome's internal time zone to match the system.
Note: deprecatedtimezone is still used for exploded time and will be
replaced in a separate CL.

Bug: 985946
Test: JavaScript `Date()` displays the correct local time and zone.
Change-Id: I3ab495ac277f5a53f60a3f51e8b128a12370a99b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1877809
Commit-Queue: David Dorwin <ddorwin@chromium.org>
Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Will Harris <wfh@chromium.org>
Reviewed-by: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721862}