Revert of Revert of RRR (patchset #1 id:1 of https://codereview.chromium.org/619763003/)

Reason for revert:
sdf

Original issue's description:
> Revert of RRR (patchset #1 id:1 of https://codereview.chromium.org/624453002/)
>
> Reason for revert:
> qe
>
> Original issue's description:
> > RRR
> > TBR=3242
> > BUG=
> >
> > Committed: https://chromium.googlesource.com/infra/sandbox/+/e16e7e8e4da3d7cc969a35de9be3a671422a713a
>
> TBR=
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://chromium.googlesource.com/infra/sandbox/+/c26c258aa56829646a37b259de24f4c575be07e9

TBR=
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/617053003
diff --git a/abc.txt b/abc.txt
deleted file mode 100644
index 8baef1b..0000000
--- a/abc.txt
+++ /dev/null
@@ -1 +0,0 @@
-abc