Roll Skia from 978726c1e725 to 3a17208059ec (2 revisions) (flutter#173939)

https://skia.googlesource.com/skia.git/+log/978726c1e725..3a17208059ec

2025-08-18 [email protected] Roll
skottie-base from 951c83390400 to d3e0a508e29c
2025-08-18 [email protected] Roll
jsfiddle-base from 74f9e2cd8bc1 to c4343b58423e

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': '978726c1e72592c10527209136b4d7e789558bbb',
+  'skia_revision': '3a17208059ec2b19e7a83921be8ece3974196754',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.