Roll Skia from a60f3f6214d3 to f8b6ec14e83f (4 revisions) (flutter/engine#38438)

https://skia.googlesource.com/skia.git/+log/a60f3f6214d3..f8b6ec14e83f

2022-12-21 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia Infra from edb5dad4c6cd to 109d78dc882e (3 revisions)
2022-12-21 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn from 5cc118bde79d to f8277d0ae47c (10 revisions)
2022-12-21 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from 3b2177fcfcba to f7de9e0637c2 (1 revision)
2022-12-21 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SK Tool from 71aad257c071 to 109d78dc882e

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC chinmaygarde@google.com,kjlubick@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 file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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

DEPS

@@ -18,7 +18,7 @@ vars = {
   'llvm_git': 'https://llvm.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': 'a60f3f6214d364f3d4aac9660015e1a440e68444',
+  'skia_revision': 'f8b6ec14e83f4f890902fc23d83b5e74327c13f1',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

engine/src/flutter/ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: dce21d8b85927b99f622c12a587878ec
+Signature: 36076e5a67938dcb12229dec3abb0a10
 
 ====================================================================================================
 LIBRARY: etc1