The V8 mac asan bots correspond to "Mac ASAN Release" and
"Mac ASAN Debug" from chromium.lkgr waterfall.

Depends on infra side:
https://chromium-review.googlesource.com/c/613162

TBR=yangguo@chromium.org
NOTRY=true

Bug: chromium:726584
Change-Id: Ic71e3577485131b260801eef9e801ab19ed093c1
Reviewed-on: https://chromium-review.googlesource.com/613480Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47338}