Roll Skia from 57b4252cf211 to 550fd51bd254 (3 revisions)

https://skia.googlesource.com/skia.git/+log/57b4252cf211..550fd51bd254

2022-11-21 [email protected] Add dedicated zero_slots_unmasked op.
2022-11-21 [email protected] Roll vulkan-deps from a3f4f653c783 to 4802bf762104 (4 revisions)
2022-11-21 [email protected] [graphite] Change Metal copy routines' labels to match the routine name

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] 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': '57b4252cf2116891516919ce5a21ee9e949836cf',
+  'skia_revision': '550fd51bd2549bce60584b1c1703f6a23868de94',
 
   # 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: 5971aa090b8223d3e0099586c96fbd7f
+Signature: c644d218bc7015183c4f3cc9d2a3605b
 
 UNUSED LICENSES: