Roll Skia from 79ec267090bd to b8acfa559db0 (1 revision) (flutter/engine#50636)

https://skia.googlesource.com/skia.git/+log/79ec267090bd..b8acfa559db0

2024-02-14 michaelludwig@google.com [ganesh] Actually let SkSpecialImage::asShader() skip subset clamping

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,johnstiles@google.com,jsimmons@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://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

@@ -14,7 +14,7 @@ vars = {
   'flutter_git': 'https://flutter.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
-  'skia_revision': '79ec267090bd8d7c61962a84b1c921ea6efa8239',
+  'skia_revision': 'b8acfa559db0438cb0c3dbf54d78844a5d9b38e4',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

engine/src/flutter/ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: a94f88bdab86df5bbab7b49a223e94d8
+Signature: f789aeee5aef874ac78e42db538aacf9
 
 ====================================================================================================
 LIBRARY: etc1