Roll Skia from fb9b061b6673 to 9b7c0ae5007a (3 revisions)

https://skia.googlesource.com/skia.git/+log/fb9b061b6673..9b7c0ae5007a

2023-03-16 johnstiles@google.com Add unit test for indexed, swizzled writes.
2023-03-16 jsimmons@google.com Roll Karma to 6.4.1
2023-03-16 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SK Tool from 967d832824f0 to a4cece1686a9

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 aaclarke@google.com,brianosman@google.com,egdaniel@google.com,rmistry@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': 'fb9b061b6673b15f685afa68c1fb83d9046f9735',
+  'skia_revision': '9b7c0ae5007a1665fefc9a316bfcdfe40763ed89',
 
   # 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: a270adfbf15bfc04341a1b08687e922c
+Signature: 8ae296841439c2d942b6afb35b9ee18d
 
 ====================================================================================================
 LIBRARY: etc1