Roll Dart SDK from a46161eec56d to 12e49f395fd9 (1 revision) (#52251)

https://dart.googlesource.com/sdk.git/+log/a46161eec56d..12e49f395fd9

2024-04-19 [email protected] Version 3.5.0-77.0.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-engine
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 Engine: 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: skia-flutter-autoroll

DEPS

@@ -62,7 +62,7 @@ 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': 'a46161eec56df434bc15e38778584a40b5cf34c8',
+  'dart_revision': '12e49f395fd9185beebb3e9ff62b72910584d91d',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -517,7 +517,7 @@ deps = {
    Var('dart_git') + '/web.git' + '@' + Var('dart_web_rev'),
 
   'src/flutter/third_party/dart/third_party/pkg/web_socket_channel':
-   Var('dart_git') + '/web_socket_channel.git@b612fc2caa9f4c3c8947b4ffbb274bce33c54a04',
+   Var('dart_git') + '/web_socket_channel.git@ced3a37193f89d5ee95792f342eeb15d3d55d8c1',
 
   'src/flutter/third_party/dart/third_party/pkg/webdev':
    Var('dart_git') + '/webdev.git' + '@' + Var('dart_webdev_rev'),

ci/licenses_golden/licenses_dart

@@ -1,4 +1,4 @@
-Signature: b851b903a801519f7c588527b695dd9b
+Signature: fce5c5d9eeddfb78cd4904113e664704
 
 ====================================================================================================
 LIBRARY: dart
@@ -4737,7 +4737,7 @@ 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/+/a46161eec56df434bc15e38778584a40b5cf34c8
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/12e49f395fd9185beebb3e9ff62b72910584d91d
 /third_party/fallback_root_certificates/
 
 ====================================================================================================

sky/packages/sky_engine/LICENSE

@@ -32293,7 +32293,7 @@ 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/+/a46161eec56df434bc15e38778584a40b5cf34c8
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/12e49f395fd9185beebb3e9ff62b72910584d91d
 /third_party/fallback_root_certificates/
 
 --------------------------------------------------------------------------------