Roll SK Tool from 79153d607903 to 7b892cc5882d

https://skia.googlesource.com/buildbot.git/+log/79153d607903..7b892cc5882d

2021-04-12 borenet@google.com [sk] Add release-branch subcommand

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/sk-tool-skia
Please CC jcgregorio@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Tbr: jcgregorio@google.com
Change-Id: Ib0a487ed3fc2455c2f15713751c8f80e7a77c85e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/395778
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
1 file changed