This reverts commit a9f5dd30.

Reason for revert:
Temporarily use legacy method until https://crbug.com/843917 is fixed.

Original change's description:
> [release] Switch auto-roller to gclient setdep
> 
> NOTRY=true
> 
> Bug: chromium:828745
> Change-Id: I051f57893937796e01f0b823f1050dd36e0fbfd9
> Reviewed-on: https://chromium-review.googlesource.com/997556
> Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52385}

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

NOTRY=true

Bug: chromium:843917
Change-Id: I69978ba55ffa5996101e1d31bdf10364b7ef273f
Reviewed-on: https://chromium-review.googlesource.com/1064130Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53230}