Roll Skia from f1983b5af2ef to b7ac9da3e5ac (1 revision) (#47548)

https://skia.googlesource.com/skia.git/+log/f1983b5af2ef..b7ac9da3e5ac

2023-11-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from 8e8b4dc940dc to 563569acfcaf (10 revisions)

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 brianosman@google.com,herb@google.com,rmistry@google.com,zra@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://issues.skia.org/issues/new?component=1389291&template=1850622

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': 'f1983b5af2ef506cc0d3c00b2d4cce9a262b85cb',
+  'skia_revision': 'b7ac9da3e5ac34baf5da70b3e37cdbfd898ed54b',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.