Roll Skia from 0ca53adfc6cc to 845ec125e94c (2 revisions) (flutter#174978)

https://skia.googlesource.com/skia.git/+log/0ca53adfc6cc..845ec125e94c

2025-09-05 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 0c650120dc77 to 05f5847a3f30 (5 revisions)
2025-09-05 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn
from a685b7a7df11 to d0a341f6ee1b (21 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 aaclarke@google.com,kjlubick@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': '0ca53adfc6cc6a58ac72ceda688ed11a652c73c2',
+  'skia_revision': '845ec125e94ce32aa235aeca99409dabf15f9f76',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.