This reverts commit f61af569.

Reason for revert: Broke bot update, https://ci.chromium.org/p/chromium/builders/try/win7-rel/80552

Original change's description:
> bot_update: Pass target-ref to gclient.
> 
> Bug: 956807
> Recipe-Nontrivial-Roll: infra
> Recipe-Nontrivial-Roll: skia
> Recipe-Nontrivial-Roll: build_limited_scripts_slave
> Recipe-Nontrivial-Roll: build
> Change-Id: I4d786d989446b8c1e3f39ef78c3c99cfe70808c0
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1588502
> Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
> Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>

TBR=nodir@chromium.org,tandrii@chromium.org,ehmaldonado@chromium.org

Change-Id: Ib91ed0d40c49acbd2a85c440ea1923cb9e387353
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 956807
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1590526Reviewed-by: Stephen Martinis <martiniss@chromium.org>
Commit-Queue: Stephen Martinis <martiniss@chromium.org>