Roll Dart SDK from b4d374ec59ec to 4e1f02bc704f (2 revisions) (flutter#166342)

https://dart.googlesource.com/sdk.git/+log/b4d374ec59ec..4e1f02bc704f

2025-04-01 [email protected]
Version 3.8.0-250.0.dev
2025-04-01 [email protected]
Version 3.8.0-249.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter
Please CC [email protected],[email protected] on the revert to
ensure that a human
is aware of the problem.

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

@@ -56,7 +56,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'b4d374ec59ec7666124f5e774fe076e0d5fdea96',
+  'dart_revision': '4e1f02bc704f74e25a737e033bfd7d0da52ec447',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

engine/src/flutter/ci/licenses_golden/licenses_dart

@@ -1,4 +1,4 @@
-Signature: 72d2bb6130864b87a871fa8a7ff525ec
+Signature: fb0a650920d0bbc0c45c241328fe3ae6
 
 ====================================================================================================
 LIBRARY: dart
@@ -4862,7 +4862,7 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
   This Source Code Form is "Incompatible With Secondary Licenses", as
   defined by the Mozilla Public License, v. 2.0.
 
-You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/b4d374ec59ec7666124f5e774fe076e0d5fdea96
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/4e1f02bc704f74e25a737e033bfd7d0da52ec447
 /third_party/fallback_root_certificates/
 
 ====================================================================================================

engine/src/flutter/sky/packages/sky_engine/LICENSE

@@ -30351,7 +30351,7 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
   This Source Code Form is "Incompatible With Secondary Licenses", as
   defined by the Mozilla Public License, v. 2.0.
 
-You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/b4d374ec59ec7666124f5e774fe076e0d5fdea96
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/4e1f02bc704f74e25a737e033bfd7d0da52ec447
 /third_party/fallback_root_certificates/
 
 --------------------------------------------------------------------------------