Reason for revert:
Still in use. Breaks the v8 auto-rollers.

https://cs.chromium.org/search/?q=roll-dep-svn&sq=package:chromium&type=cs

Original issue's description:
> Delete roll-dep-svn
>
> R=dnj@chromium.org
> BUG=475320
>
> Committed: https://chromium.googlesource.com/chromium/tools/depot_tools/+/96ebc1d0e100021990312072e6eda6b8a0a81ee5

TBR=dnj@chromium.org,agable@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=475320

Review-Url: https://codereview.chromium.org/2297513002