Revert dart to 9f61c2487bbd (#30056)

* Revert "Roll Dart SDK from 3a963ff14181 to 8bb2e56ec900 (4 revisions) (#30045)"

This reverts commit c85a129.

* Revert "Roll Dart SDK from 9f61c2487bbd to 3a963ff14181 (7 revisions) (#30011)"

This reverts commit 9b200e1.

Author: zanderso

DEPS

@@ -39,7 +39,7 @@ 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': '8bb2e56ec900b90376dacd103499d1f3acf09c9d',
+  'dart_revision': '9f61c2487bbd52f28d19bb7fc76f3b6fce7d040a',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -48,11 +48,11 @@ vars = {
   'dart_browser_launcher_rev': 'c6cc1025d6901926cf022e144ba109677e3548f1',
   'dart_clock_rev': 'a494269254ba978e7ef8f192c5f7fec3fc05b9d3',
   'dart_collection_rev': 'a4c941ab94044d118b2086a3f261c30377604127',
-  'dart_devtools_rev': 'f2ede24a4ea666d4832d78b813c7d4e376aa77d0',
+  'dart_devtools_rev': '3a2f570813200e6dee141f3e7a9edcae5f31c2e8',
   'dart_intl_tag': '0.17.0-nullsafety',
   'dart_linter_tag': '1.15.0',
   'dart_protobuf_rev': 'c1eb6cb51af39ccbaa1a8e19349546586a5c8e31',
-  'dart_pub_rev': 'b9edfa5e288ea3d1a57d1db054ef844ae7b27d99',
+  'dart_pub_rev': '96404e0749864c9fbf8b12e1d424e8078809e00a',
   'dart_root_certificates_rev': '692f6d6488af68e0121317a9c2c9eb393eb0ee50',
   'dart_shelf_proxy_tag': 'v1.0.0',
   'dart_shelf_static_rev': '202ec1a53c9a830c17cf3b718d089cf7eba568ad',
@@ -170,7 +170,7 @@ deps = {
   # WARNING: Unused Dart dependencies in the list below till "WARNING:" marker are removed automatically - see create_updated_flutter_deps.py.
 
   'src/third_party/dart/third_party/devtools':
-   {'packages': [{'version': 'git_revision:f2ede24a4ea666d4832d78b813c7d4e376aa77d0', 'package': 'dart/third_party/flutter/devtools'}], 'dep_type': 'cipd'},
+   {'packages': [{'version': 'git_revision:3a2f570813200e6dee141f3e7a9edcae5f31c2e8', 'package': 'dart/third_party/flutter/devtools'}], 'dep_type': 'cipd'},
 
   'src/third_party/dart/third_party/pkg/args':
    Var('dart_git') + '/args.git@3b3f55766af13d895d2020ec001a28e8dc147f91',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 6e34072f232f939890e6e64792a656d7
+Signature: 6687862bd639dcf5eda6d323f19131d2
 
 UNUSED LICENSES:
 
@@ -9782,8 +9782,6 @@ FILE: ../../../third_party/dart/benchmarks/DartCLIStartup/dart2/DartCLIStartup.d
 FILE: ../../../third_party/dart/benchmarks/EventLoopLatencyRegexp/dart/EventLoopLatencyRegexp.dart
 FILE: ../../../third_party/dart/benchmarks/EventLoopLatencyRegexp/dart/regexp_benchmark.dart
 FILE: ../../../third_party/dart/benchmarks/EventLoopLatencyRegexp/dart2/regexp_benchmark.dart
-FILE: ../../../third_party/dart/benchmarks/FfiAsTypedList/dart/FfiAsTypedList.dart
-FILE: ../../../third_party/dart/benchmarks/FfiAsTypedList/dart2/FfiAsTypedList.dart
 FILE: ../../../third_party/dart/benchmarks/IsolateFibonacci/dart/IsolateFibonacci.dart
 FILE: ../../../third_party/dart/benchmarks/IsolateFibonacci/dart2/IsolateFibonacci.dart
 FILE: ../../../third_party/dart/benchmarks/MapLookup/dart/MapLookup.dart