Revert "Roll Dart SDK from 3e5ab8e22dc3 to edf2936a5e06 (4 revisions) (#28426)" (#28437)

This reverts commit bffec2a6.

DEPS

@@ -39,7 +39,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'edf2936a5e06db6487be4a6249ea584e8d1e8f39',
+  'dart_revision': '3e5ab8e22dc331dc756091b2685d00b1c505523c',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -176,7 +176,7 @@ deps = {
    Var('dart_git') + '/args.git@bf4c8796881b62fd5d3f6d86ab43014f9651eb20',
 
   'src/third_party/dart/third_party/pkg/async':
-   Var('dart_git') + '/async.git@ecb3835c5b746f7762327d5f57bdc92e0a2e0450',
+   Var('dart_git') + '/async.git@88cc6079037da08dcb31cf8dcd62173c2ddf1e89',
 
   'src/third_party/dart/third_party/pkg/bazel_worker':
    Var('dart_git') + '/bazel_worker.git@0885637b037979afbf5bcd05fd748b309fd669c0',
@@ -308,7 +308,7 @@ deps = {
    Var('dart_git') + '/source_span.git@1be3c44045a06dff840d2ed3a13e6082d7a03a23',
 
   'src/third_party/dart/third_party/pkg/sse':
-   Var('dart_git') + '/sse.git@9084339389eb441d0c0518cddac211a097e78657',
+   Var('dart_git') + '/sse.git@d505b383768889a1e3e90097684e929a9e6d6b8f',
 
   'src/third_party/dart/third_party/pkg/stack_trace':
    Var('dart_git') + '/stack_trace.git@6788afc61875079b71b3d1c3e65aeaa6a25cbc2f',

ci/licenses_golden/licenses_third_party

-Signature: 49d206cc09999152e46c3d1c00fe186a
+Signature: 09c666f60c928db6718370c3b72658b8
 
 UNUSED LICENSES:
 
@@ -9738,7 +9738,8 @@ FILE: ../../../third_party/dart/benchmarks/SoundSplayTreeSieve/dart2/SoundSplayT
 FILE: ../../../third_party/dart/benchmarks/SoundSplayTreeSieve/dart2/sound_splay_tree.dart
 FILE: ../../../third_party/dart/runtime/bin/elf_loader.cc
 FILE: ../../../third_party/dart/runtime/bin/elf_loader.h
-FILE: ../../../third_party/dart/runtime/bin/entrypoints_verification_test.cc
+FILE: ../../../third_party/dart/runtime/bin/entrypoints_verification_test_extension.cc
+FILE: ../../../third_party/dart/runtime/bin/entrypoints_verification_test_extension_dllmain_win.cc
 FILE: ../../../third_party/dart/runtime/bin/ffi_test/ffi_test_dynamic_library.cc
 FILE: ../../../third_party/dart/runtime/bin/ffi_test/ffi_test_functions.cc
 FILE: ../../../third_party/dart/runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc
@@ -10221,6 +10222,12 @@ FILE: ../../../third_party/dart/runtime/bin/eventhandler_macos.cc
 FILE: ../../../third_party/dart/runtime/bin/eventhandler_macos.h
 FILE: ../../../third_party/dart/runtime/bin/eventhandler_test.cc
 FILE: ../../../third_party/dart/runtime/bin/eventhandler_win.h
+FILE: ../../../third_party/dart/runtime/bin/extensions.cc
+FILE: ../../../third_party/dart/runtime/bin/extensions.h
+FILE: ../../../third_party/dart/runtime/bin/extensions_android.cc
+FILE: ../../../third_party/dart/runtime/bin/extensions_linux.cc
+FILE: ../../../third_party/dart/runtime/bin/extensions_macos.cc
+FILE: ../../../third_party/dart/runtime/bin/extensions_win.cc
 FILE: ../../../third_party/dart/runtime/bin/fdutils.h
 FILE: ../../../third_party/dart/runtime/bin/fdutils_android.cc
 FILE: ../../../third_party/dart/runtime/bin/fdutils_fuchsia.cc
@@ -10256,6 +10263,8 @@ FILE: ../../../third_party/dart/runtime/bin/socket_base_android.h
 FILE: ../../../third_party/dart/runtime/bin/socket_base_linux.h
 FILE: ../../../third_party/dart/runtime/bin/socket_base_macos.h
 FILE: ../../../third_party/dart/runtime/bin/socket_base_win.h
+FILE: ../../../third_party/dart/runtime/bin/test_extension.c
+FILE: ../../../third_party/dart/runtime/bin/test_extension_dllmain_win.cc
 FILE: ../../../third_party/dart/runtime/bin/thread.h
 FILE: ../../../third_party/dart/runtime/bin/thread_android.cc
 FILE: ../../../third_party/dart/runtime/bin/thread_android.h
@@ -10484,7 +10493,19 @@ FILE: ../../../third_party/dart/runtime/vm/virtual_memory_win.cc
 FILE: ../../../third_party/dart/runtime/vm/zone.cc
 FILE: ../../../third_party/dart/runtime/vm/zone.h
 FILE: ../../../third_party/dart/runtime/vm/zone_test.cc
+FILE: ../../../third_party/dart/samples/sample_extension/sample_asynchronous_extension.dart
+FILE: ../../../third_party/dart/samples/sample_extension/sample_extension.cc
+FILE: ../../../third_party/dart/samples/sample_extension/sample_extension_dllmain_win.cc
+FILE: ../../../third_party/dart/samples/sample_extension/sample_synchronous_extension.dart
+FILE: ../../../third_party/dart/samples/sample_extension/test_sample_asynchronous_extension.dart
+FILE: ../../../third_party/dart/samples/sample_extension/test_sample_synchronous_extension.dart
 FILE: ../../../third_party/dart/samples/samples.status
+FILE: ../../../third_party/dart/samples_2/sample_extension/sample_asynchronous_extension.dart
+FILE: ../../../third_party/dart/samples_2/sample_extension/sample_extension.cc
+FILE: ../../../third_party/dart/samples_2/sample_extension/sample_extension_dllmain_win.cc
+FILE: ../../../third_party/dart/samples_2/sample_extension/sample_synchronous_extension.dart
+FILE: ../../../third_party/dart/samples_2/sample_extension/test_sample_asynchronous_extension.dart
+FILE: ../../../third_party/dart/samples_2/sample_extension/test_sample_synchronous_extension.dart
 FILE: ../../../third_party/dart/samples_2/samples_2.status
 FILE: ../../../third_party/dart/sdk/lib/_http/crypto.dart
 FILE: ../../../third_party/dart/sdk/lib/_http/http_date.dart
@@ -11095,6 +11116,7 @@ FILE: ../../../third_party/dart/runtime/bin/directory_fuchsia.cc
 FILE: ../../../third_party/dart/runtime/bin/directory_test.cc
 FILE: ../../../third_party/dart/runtime/bin/eventhandler_fuchsia.cc
 FILE: ../../../third_party/dart/runtime/bin/eventhandler_fuchsia.h
+FILE: ../../../third_party/dart/runtime/bin/extensions_fuchsia.cc
 FILE: ../../../third_party/dart/runtime/bin/file_fuchsia.cc
 FILE: ../../../third_party/dart/runtime/bin/file_support.cc
 FILE: ../../../third_party/dart/runtime/bin/file_system_watcher_fuchsia.cc