Roll Skia from f867f82cc758 to 8a26fe31389d (1 revision) (flutter#45104)

https://skia.googlesource.com/skia.git/+log/f867f82cc758..8a26fe31389d

2023-08-25 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from 0b648252039f to c8ec8739ec4d (13 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,jimgraham@google.com,lovisolo@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

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': 'f867f82cc758d5c1def26c7b6c265904f98fef2e',
+  'skia_revision': '8a26fe31389d75b11ea8baa8f4b8fcbe318d0eec',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.