Roll Skia from 953589c71b4a to 9ffb18cccf2a (4 revisions) (#52438)

https://skia.googlesource.com/skia.git/+log/953589c71b4a..9ffb18cccf2a

2024-04-29 jamesgk@google.com [graphite] Analytic blur for rrects
2024-04-29 bungeman@google.com Roll depot_tools and recipes-py
2024-04-29 brianosman@google.com Simplify/optimize SkPath::hasOnlyMoveTos
2024-04-29 skia-autoroll@skia-public.iam.gserviceaccount.com Roll vulkan-deps from a2456e74640e to 5eaadb2feb71 (2 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,kjlubick@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

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': '953589c71b4aa68fb13ef4362f4b1765b4a50bca',
+  'skia_revision': '9ffb18cccf2a97f4e56e6bbad5ef5540ea643c83',
 
   # 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: 4d964805d87643acdfe7d7c92955b4b1
+Signature: 632bf6c525eaff95c0c0ef85f44dd999
 
 ====================================================================================================
 LIBRARY: etc1