Roll Skia from c31e2ca59bd9 to 51ac9d93850c (2 revisions) (#54681)

https://skia.googlesource.com/skia.git/+log/c31e2ca59bd9..51ac9d93850c

2024-08-21 [email protected] [graphite] Add inverse fill support to circular rrect clip.
2024-08-21 [email protected] [ganesh] Avoid int overflow when combining RegionOps

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],[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://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

Author: skia-flutter-autoroll

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': 'c31e2ca59bd9e6981e848726ed1fade559a4f379',
+  'skia_revision': '51ac9d93850cab17dfca651d6f367476de58b9af',
 
   # 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: 42ba96fb01dcfe19769448c89ef52f1e
+Signature: 4b598a650b660ac1b9a96f50a3bd0d79
 
 ====================================================================================================
 LIBRARY: etc1