Reverts "Roll Dart SDK from ef405fbe3917 to 2976c1694eed (6 revisions) (#53119)"

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': '2976c1694eed29601f676f6297fd7914b82a3594',
+  'dart_revision': 'ef405fbe3917530293414ad314912da9ff428603',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -65,7 +65,7 @@ vars = {
   'dart_boringssl_rev': 'd24a38200fef19150eef00cad35b138936c08767',
   'dart_browser_launcher_rev': '0dcf2246c11eaf6c4f2591332f1057734a847793',
   'dart_clock_rev': '80e70acf72cc3a876d3158911b097b581cd8fd1a',
-  'dart_collection_rev': 'fe2e80039b6d44d80f7465535988f935ccf554a5',
+  'dart_collection_rev': '471839875a3bbfb26a7d51eca82be5b788660982',
   'dart_devtools_rev': 'e2a7208bb8eed852b1f9dedabf423f187e947a7d',
   'dart_libprotobuf_rev': '24487dd1045c7f3d64a21f38a3f0c06cc4cf2edb',
   'dart_perfetto_rev': '13ce0c9e13b0940d2476cd0cff2301708a9a2e2b',
@@ -74,8 +74,8 @@ vars = {
   'dart_pub_rev': '75ab224376e80e918d3c53494a36d4bf8a2f2af6',
   'dart_tools_rev': '86b3661fc4ccbcda5b662ff3075177448eeeba11',
   'dart_watcher_rev': 'c182cd3db6f0bc285bf5da52df422f5c64f21a37',
-  'dart_web_rev': 'f6f778bad31f7aaef22cf7e04f30b7bd1f8e4bb7',
-  'dart_webdev_rev': '1bed26ab085bb83a050e286ac76c393c96d3d253',
+  'dart_web_rev': 'd7766451f43001276b5493b2261d2973702b8334',
+  'dart_webdev_rev': 'fc32eb69f2ad666e9ab1cb3300510e5daed222d6',
   'dart_webkit_inspection_protocol_rev': '5740cc91eaeb13a02007b77b128fccf4b056db6e',
   'dart_yaml_edit_rev': '31919348bd2a1bbb805b4eb88a6b7f50d4ab247e',
 
@@ -350,16 +350,16 @@ deps = {
    {'dep_type': 'cipd', 'packages': [{'package': 'dart/third_party/flutter/devtools', 'version': 'git_revision:e2a7208bb8eed852b1f9dedabf423f187e947a7d'}]},
 
   'src/flutter/third_party/dart/third_party/pkg/args':
-   Var('dart_git') + '/args.git@b3608bd95168428621689dce62f873b76a1617d4',
+   Var('dart_git') + '/args.git@cf905519d67054a5e8d8835ffd4b247d8bbb602d',
 
   'src/flutter/third_party/dart/third_party/pkg/async':
-   Var('dart_git') + '/async.git@f933ddff63021bfbdb70938d6a137eb9e7419b05',
+   Var('dart_git') + '/async.git@77a25d77392b131df4ecac85bcfe9a30f82a9f40',
 
   'src/flutter/third_party/dart/third_party/pkg/bazel_worker':
    Var('dart_git') + '/bazel_worker.git@2fb4fbff6ee8d26fee1f3576fa0500057d897afd',
 
   'src/flutter/third_party/dart/third_party/pkg/boolean_selector':
-   Var('dart_git') + '/boolean_selector.git@84467e580fa1c7c53ea588308f1acbcf4e8eb6a6',
+   Var('dart_git') + '/boolean_selector.git@2cbd4a60b89fe51a404e9ee3625a8fb8019561dd',
 
   'src/flutter/third_party/dart/third_party/pkg/browser_launcher':
    Var('dart_git') + '/browser_launcher.git' + '@' + Var('dart_browser_launcher_rev'),
@@ -386,7 +386,7 @@ deps = {
    Var('dart_git') + '/dart_style.git@a6ad7693555a9add6f98ad6fd94de80d35c89415',
 
   'src/flutter/third_party/dart/third_party/pkg/dartdoc':
-   Var('dart_git') + '/dartdoc.git@ed975850ec97bbccba1c5c2a997e2c085ef842da',
+   Var('dart_git') + '/dartdoc.git@1e1a004c69022ae19e121b6b9c90039dccd56749',
 
   'src/flutter/third_party/dart/third_party/pkg/file':
    Var('dart_git') + '/external/github.com/google/file.dart@8ce0d13ffe9dac267bdbd6c65c145ba4f611af72',
@@ -401,7 +401,7 @@ deps = {
    Var('dart_git') + '/html.git@00d34611eee5eff976bd12a631357a4d591ef5fb',
 
   'src/flutter/third_party/dart/third_party/pkg/http':
-   Var('dart_git') + '/http.git@6337ee3f6d1f641192ba40e133f27085c69aa815',
+   Var('dart_git') + '/http.git@7df2ac8488ec69ee5945ae188625c0e820c4f63c',
 
   'src/flutter/third_party/dart/third_party/pkg/http_multi_server':
    Var('dart_git') + '/http_multi_server.git@4a791af861da1cf53b57d9928fbc605f57139e4f',
@@ -422,7 +422,7 @@ deps = {
    Var('dart_git') + '/logging.git@49d89b1de6e847174bc93b709e858b99e61b2ae7',
 
   'src/flutter/third_party/dart/third_party/pkg/markdown':
-   Var('dart_git') + '/markdown.git@c1013dc6fc2653baeb9fac70d0a036615867e629',
+   Var('dart_git') + '/markdown.git@340c76f6cab697ca9a51e0772009347400d9488a',
 
   'src/flutter/third_party/dart/third_party/pkg/matcher':
    Var('dart_git') + '/matcher.git@4ac4096facce24a781ab6609ca99995aeb443b25',
@@ -455,7 +455,7 @@ deps = {
    Var('dart_git') + '/pub_semver.git@f57c9c31dfd4e45ce6b11f18ee388e526ba1792a',
 
   'src/flutter/third_party/dart/third_party/pkg/shelf':
-   Var('dart_git') + '/shelf.git@338962c5a80761ca60921fc9c9b3e6ff57ffc82c',
+   Var('dart_git') + '/shelf.git@d9f82bf2cdd87e2878cfdc167aa41b9ce87a52d8',
 
   'src/flutter/third_party/dart/third_party/pkg/source_map_stack_trace':
    Var('dart_git') + '/source_map_stack_trace.git@6834af5e9e4ba880741b1357a5967fee8d90827c',
@@ -503,7 +503,7 @@ 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@afd1e3c8327d542d2c7e28b5c9c1ec2282ee5fdf',
+   Var('dart_git') + '/web_socket_channel.git@45b8ce9ce9fb5194a24d3dff8913c573fbe7896a',
 
   '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: c31227f6bc734be13c25b2bc7fbe6725
+Signature: fde43623e16ac6ca0896f21500e18137
 
 ====================================================================================================
 LIBRARY: dart
@@ -4741,7 +4741,7 @@ 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/+/2976c1694eed29601f676f6297fd7914b82a3594
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/ef405fbe3917530293414ad314912da9ff428603
 /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/+/2976c1694eed29601f676f6297fd7914b82a3594
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/ef405fbe3917530293414ad314912da9ff428603
 /third_party/fallback_root_certificates/
 
 --------------------------------------------------------------------------------