Roll Skia from a47a9a2c8ae5 to 91ee612cf552 (4 revisions) (#187642)

https://skia.googlesource.com/skia.git/+log/a47a9a2c8ae5..91ee612cf552

2026-06-06 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 8b51d6332f98 to 763d7fb65f73 (9 revisions)
2026-06-05 kjlubick@google.com Reject Slugs that have creationMatrix
with perspective
2026-06-05 skia-autoroll@skia-public.iam.gserviceaccount.com Manual roll
ANGLE from 1184faa057e3 to 0bcdad042d68 (8 revisions)
2026-06-05 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 78036a90f143 to 8b51d6332f98 (5 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 bensonluk@google.com,kjlubick@google.com,nicolettep@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
diff --git a/DEPS b/DEPS
index f25970b..14e842a 100644
--- a/DEPS
+++ b/DEPS
@@ -16,7 +16,7 @@
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
   'dart_ai_rev': '9c96bfe5f091c9451eff5b59c9bffeb2e806b875',
-  'skia_revision': 'a47a9a2c8ae5db0311c6c6f3e98fdb3bb6902664',
+  'skia_revision': '91ee612cf552bd0f757cd682cebf8a3d9a8ee080',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.