Roll Skia from 88e8c099a086 to 978726c1e725 (3 revisions) (flutter#173935)

https://skia.googlesource.com/skia.git/+log/88e8c099a086..978726c1e725

2025-08-17 [email protected] Roll
vulkan-deps from 0ae104d9374d to eb3190110845 (1 revision)
2025-08-17 [email protected] Reapply "Factor out common pathiter"
2025-08-17 [email protected]
Update SKP version

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 [email protected],[email protected],[email protected]
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': '88e8c099a086825f6e69afe0072ac8f3a07c57f2',
+  'skia_revision': '978726c1e72592c10527209136b4d7e789558bbb',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.