Revert dart to 38e7078 (#29575)

* Revert "Roll Dart SDK from 5ccf755 to f6a43e5 (1 revision) (#29571)"

This reverts commit f0a8d4e.

* Revert "Roll Dart SDK from 996ef24 to 5ccf755 (1 revision) (#29568)"

This reverts commit 9af2de9.

* Revert "Roll Dart SDK from d464cd3 to 996ef24 (1 revision) (#29564)"

This reverts commit 79b5e3c.

* Revert "Roll Dart SDK from 38e7078 to d464cd3 (5 revisions) (#29561)"

This reverts commit 988ea43.

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': 'f6a43e5eb71d0168b5db23bb4b31d3f58029981e',
+  'dart_revision': '38e7078fa2b7888e4c12b2079b51bc366fe455fd',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -206,7 +206,7 @@ deps = {
    Var('dart_git') + '/crypto.git@b5024e4de2b1c474dd558bef593ddbf0bfade152',
 
   'src/third_party/dart/third_party/pkg/csslib':
-   Var('dart_git') + '/csslib.git@02abc1ddf93092efef2be365300f15504d23cd23',
+   Var('dart_git') + '/csslib.git@6f35da3d93eb56eb25925779d235858d4090ce6f',
 
   'src/third_party/dart/third_party/pkg/dartdoc':
    Var('dart_git') + '/dartdoc.git@520e64977de7a87b2fd5be56e5c2e1a58d55bdad',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 3b35dea9c9c6992f42ee28043d79f737
+Signature: f1e787217c47653595918b70b947bcfa
 
 UNUSED LICENSES:
 
@@ -9787,11 +9787,6 @@ FILE: ../../../third_party/dart/benchmarks/MapLookup/dart/maps.dart
 FILE: ../../../third_party/dart/benchmarks/MapLookup/dart2/MapLookup.dart
 FILE: ../../../third_party/dart/benchmarks/MapLookup/dart2/maps.dart
 FILE: ../../../third_party/dart/benchmarks/MapLookup/generate_maps.dart
-FILE: ../../../third_party/dart/benchmarks/NativeCall/dart/NativeCall.dart
-FILE: ../../../third_party/dart/benchmarks/NativeCall/dart/dlopen_helper.dart
-FILE: ../../../third_party/dart/benchmarks/NativeCall/dart2/NativeCall.dart
-FILE: ../../../third_party/dart/benchmarks/NativeCall/dart2/dlopen_helper.dart
-FILE: ../../../third_party/dart/benchmarks/NativeCall/native/native_functions.c
 FILE: ../../../third_party/dart/benchmarks/ObjectHash/dart/ObjectHash.dart
 FILE: ../../../third_party/dart/benchmarks/ObjectHash/dart2/ObjectHash.dart
 FILE: ../../../third_party/dart/benchmarks/SDKArtifactSizes/dart/SDKArtifactSizes.dart