Roll Skia from 9b2b942d1eb1 to bb3b6bd4be0d (4 revisions) (flutter#176201)

https://skia.googlesource.com/skia.git/+log/9b2b942d1eb1..bb3b6bd4be0d

2025-09-29 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 666c7222bfe6 to a9e2ca3b57ab (2 revisions)
2025-09-29 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE
from 1f40285c90cd to 7a7681cc8f88 (8 revisions)
2025-09-29
recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com
Roll recipe dependencies (trivial).
2025-09-29 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia
Infra from 77be60075080 to ed3dfff05a5e (3 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 jsimmons@google.com,kjlubick@google.com,maxhudnell@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: engine-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': '9b2b942d1eb1ea558c07cfd894b8739e38f942e9',
+  'skia_revision': 'bb3b6bd4be0dd757165a5723e1794f7ad2211d49',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.