ICU 63.1 fixed it and v8's ICU was rolled to ICU 63.1

TBR=sigurds@chromium.org

Bug: v8:8110
Change-Id: Ic44c8f4293d6d39b597a90318f0acbf5aea6eccf
Reviewed-on: https://chromium-review.googlesource.com/c/1316615Reviewed-by: Jungshik Shin <jshin@chromium.org>
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57227}