This reverts commit b00449ac.

Reason for revert: new version is buggy when serializing properties.

Original change's description:
> Release new bb tool @ 1b9c7d3e8bacc3100d0f81c96825756e6f48a293.
> 
> Git log https://chromium.googlesource.com/infra/infra.git/+log/bdbeaf7..1b9c7d3e8
> 
> R=​smut
> 
> Bug: 1028420
> Change-Id: Id1730f84b96a5ac9ecc62c2e04251b7a5ae238f9
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1938548
> Reviewed-by: smut <smut@google.com>
> Commit-Queue: smut <smut@google.com>
> Auto-Submit: Andrii Shyshkalov <tandrii@google.com>

TBR=smut@google.com,tandrii@google.com

Change-Id: I468dece3818a95a2f7313ef0dfbea8fc4d8f126b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1028420
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1938550Reviewed-by: Andrii Shyshkalov <tandrii@google.com>
Commit-Queue: Andrii Shyshkalov <tandrii@google.com>