This reverts commit 4d39dc392294807d84eefb1c7414f807d9b4855b.
Reason for revert: To benefit from the other fix in crbug.com/773671. Will reland once DEPS rolling is unblocked.
Original change's description:
> Use subprocess2 for downloading tools.
>
> Change to use exactly the same approach as when gclient hooks
> are executing [1]. It should be safe since it's using the DEPS-pinned
> depot_tools in third_party. Hopefully this solves the race condition
> problems we've been seeing in crbug.com/773671
>
> [1]: https://cs.chromium.org/chromium/tools/depot_tools/gclient.py?rcl=b3ce73d028b1d44137d533220fd41be31bc31801&l=214
>
> Bug: chromium:773671
> Change-Id: Ia003dbca394e42556afa1a416fcb4844b960ad6c
> No-try: True
> Reviewed-on: https://webrtc-review.googlesource.com/8820
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Commit-Queue: Henrik Kjellander <kjellander@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#20256}
TBR=kjellander@webrtc.org,mbonadei@webrtc.org
Change-Id: I825d291d6f723cac79a6cc6fc54cd5f9d4877152
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:773671
Reviewed-on: https://webrtc-review.googlesource.com/9080
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Commit-Queue: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20263}
44ba5e577a