Roll SK Tool from d9ac550a85b9 to 338c865c411a

https://skia.googlesource.com/buildbot.git/+log/d9ac550a85b9..338c865c411a

2021-11-22 rmistry@google.com Add new ExternalChangeId field to ManualRollRequest and Revision.

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 lovisolo@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry

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/main/autoroll/README.md

Tbr: lovisolo@google.com
Change-Id: I7875542d6fc21a4e75c729ae3ac54af0d9c48bb8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/474816
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
1 file changed