The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/portage-stable/+/4ededf97e9d47e3b88c58897c8c7a8bdcda22272

commit 4ededf97e9d47e3b88c58897c8c7a8bdcda22272
Author: Abe Levkoy <alevkoy@chromium.org>
Date: Wed Dec 05 01:40:13 2018

grep: upgraded package to upstream

Upgraded sys-apps/grep to version 3.0 on arm64, amd64, arm

BUG= chromium:907646 
TEST=Ran unit tests on host

Change-Id: I3e24886d18755d95ed7ffbcc918a42bd91cf0128
Reviewed-on: https://chromium-review.googlesource.com/1351830
Commit-Ready: Abe Levkoy <alevkoy@chromium.org>
Tested-by: Abe Levkoy <alevkoy@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>

[rename] https://crrev.com/4ededf97e9d47e3b88c58897c8c7a8bdcda22272/metadata/md5-cache/sys-apps/grep-3.0
[rename] https://crrev.com/4ededf97e9d47e3b88c58897c8c7a8bdcda22272/sys-apps/grep/grep-3.0.ebuild
[modify] https://crrev.com/4ededf97e9d47e3b88c58897c8c7a8bdcda22272/sys-apps/grep/Manifest
[modify] https://crrev.com/4ededf97e9d47e3b88c58897c8c7a8bdcda22272/sys-apps/grep/metadata.xml