Roll Dart SDK from e8fda1e72d64 to 68d7e34bdabf (1 revision) (flutter#170719)

https://dart.googlesource.com/sdk.git/+log/e8fda1e72d64..68d7e34bdabf

2025-06-16 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.9.0-237.0.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 dart-vm-team@google.com,jsimmons@google.com 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': 'e8fda1e72d64693f9158a6a15f4b1a444d565652',
+  'dart_revision': '68d7e34bdabf7310f96797f0bacf675aca12bd40',
 
   # 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: d1975057b6c0b5a48a2b927324ac1791
+Signature: f0a4d9f6601ab415e7a93d2ecefe53dd
 
 ====================================================================================================
 LIBRARY: dart
@@ -4892,7 +4892,7 @@ 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/+/ae721d7d5b51cc40238c563a07fbdfce3b438ba5
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/68d7e34bdabf7310f96797f0bacf675aca12bd40
 /third_party/fallback_root_certificates/
 
 ====================================================================================================

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

@@ -31043,7 +31043,7 @@ 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/+/e8fda1e72d64693f9158a6a15f4b1a444d565652
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/68d7e34bdabf7310f96797f0bacf675aca12bd40
 /third_party/fallback_root_certificates/
 
 --------------------------------------------------------------------------------