Roll Skia from 81a58cfe3bf8 to af8db303f7f4 (2 revisions)

https://skia.googlesource.com/skia.git/+log/81a58cfe3bf8..af8db303f7f4

2021-02-19 mtklein@google.com promote the runtime mixer CF to the only mixer CF
2021-02-19 james@clarkezone.net Fix UWP build

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-lottie-ci-autoroll
Please CC borenet@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

Change-Id: Id545b1f28f46da1938c4c5683a84023088b94680
Cq-Include-Trybots: skia/skia.primary:Housekeeper-PerCommit-InfraTests
Tbr: borenet@google.com
Reviewed-on: https://skia-review.googlesource.com/c/lottie-ci/+/372385
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index cdd0351..ab78b56 100644
--- a/DEPS
+++ b/DEPS
@@ -11,7 +11,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '81a58cfe3bf853b7c03e2308ca6adc4391aeb18e',
+  'skia_revision': 'af8db303f7f4ea9e278c3450b7e8105813f726b6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.