Roll Skia from 56b353d1674a to 9460a3136627 (2 revisions) (flutter/engine#54798)

https://skia.googlesource.com/skia.git/+log/56b353d1674a..9460a3136627

2024-08-27 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia Infra from 1e4466d51783 to b53c019191d9 (8 revisions)
2024-08-27 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from dc27069e5d04 to 3c4bdf66d81d (1 revision)

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,egdaniel@google.com,jimgraham@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': '56b353d1674aa0c0027cd768c62f93591d7b8f06',
+  'skia_revision': '9460a31366278fabfa5829c80c7959f0fdae9f44',
 
   # 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: 4df2f537f7a3fc01a1b68f3f14d49177
+Signature: 91aa0428400181372f0eddbf12082884
 
 ====================================================================================================
 LIBRARY: etc1