Roll Skia from 6c219acc30a5 to 4554d1b35b6e (4 revisions) (#43973)

https://skia.googlesource.com/skia.git/+log/6c219acc30a5..4554d1b35b6e

2023-07-24 [email protected] [graphite] Add ContextOption to set default MSAA samples.
2023-07-24 [email protected] Roll SK Tool from 1de81d2a1fc2 to 2ca55949153a
2023-07-24 [email protected] Remove legacy SkMesh functions
2023-07-24 [email protected] Remove code guarded by SK_SUPPORT_LEGACY_STRIKE_SERIALIZATION

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 [email protected],[email protected],[email protected],[email protected] 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

Author: skia-flutter-autoroll

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': '6c219acc30a5974fbb7ad4d5e001e8ca9b681599',
+  'skia_revision': '4554d1b35b6e5eab7d3c64e6277ab6ef32adf49e',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: b2553e2d68d4a7ed7e97f78e30cee302
+Signature: 5e7dfa2f87fcaa098d8a573e30150051
 
 ====================================================================================================
 LIBRARY: etc1