Roll Skia from 515eb6238867 to 57a1644f0f8f (1 revision) (flutter#166748)

https://skia.googlesource.com/skia.git/+log/515eb6238867..57a1644f0f8f

2025-04-08 [email protected] Define flag again for PNG encoding

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': '515eb6238867bf965b4f28e2348bae1b4e25e380',
+  'skia_revision': '57a1644f0f8fa0b0527c1e2227f0897f2ab54f8b',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

engine/src/flutter/ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 286a07668d9452b2304b2a250dee1f75
+Signature: 858774ac40d1c7faff1cb8dd1caf3784
 
 ====================================================================================================
 LIBRARY: etc1