Revert "Expire 3.0.0 experiment flags."

This reverts commit 6f29e7f.

Reason for revert: broke g3 bot

Original change's description:
> Expire 3.0.0 experiment flags.
>
> TEST=Existing tests covers.
> Change-Id: I161eefdc28c74f63ba1ee926800a01eea03d9930
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/331960
> Commit-Queue: Lasse Nielsen <[email protected]>
> Reviewed-by: Alexander Thomas <[email protected]>

Change-Id: Ied6f612dc922824ffdadc4660898f3b859922ff5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/332582
Reviewed-by: Lasse Nielsen <[email protected]>
Reviewed-by: Alexander Thomas <[email protected]>
Commit-Queue: Alexander Thomas <[email protected]>
Auto-Submit: Alexander Aprelev <[email protected]>
Bot-Commit: Rubber Stamper <[email protected]>

pkg/_fe_analyzer_shared/lib/src/experiments/flags.dart

@@ -13,7 +13,7 @@ enum ExperimentalFlag {
   classModifiers(
       name: 'class-modifiers',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0)),
 
@@ -125,21 +125,21 @@ enum ExperimentalFlag {
   patterns(
       name: 'patterns',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0)),
 
   records(
       name: 'records',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0)),
 
   sealedClass(
       name: 'sealed-class',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0)),
 

pkg/analysis_server/test/src/services/correction/fix/remove_break_test.dart

@@ -19,7 +19,7 @@ void main() {
 @reflectiveTest
 class RemoveBreakBulkTest extends BulkFixProcessorTest {
   @override
-  List<String> get experiments => [];
+  List<String> get experiments => ['patterns', 'records'];
 
   @override
   String get lintCode => LintNames.unnecessary_breaks;
@@ -76,7 +76,7 @@ void f() {
 @reflectiveTest
 class RemoveBreakTest extends FixProcessorLintTest {
   @override
-  List<String> get experiments => [];
+  List<String> get experiments => ['patterns', 'records'];
 
   @override
   FixKind get kind => DartFixKind.REMOVE_BREAK;

pkg/analyzer/lib/src/dart/analysis/experiments.g.dart

@@ -483,7 +483,7 @@ class IsEnabledByDefault {
 /// value in [IsEnabledByDefault]).
 class IsExpired {
   /// Expiration status of the experiment "class-modifiers"
-  static const bool class_modifiers = true;
+  static const bool class_modifiers = false;
 
   /// Expiration status of the experiment "const-functions"
   static const bool const_functions = false;
@@ -531,13 +531,13 @@ class IsExpired {
   static const bool nonfunction_type_aliases = true;
 
   /// Expiration status of the experiment "patterns"
-  static const bool patterns = true;
+  static const bool patterns = false;
 
   /// Expiration status of the experiment "records"
-  static const bool records = true;
+  static const bool records = false;
 
   /// Expiration status of the experiment "sealed-class"
-  static const bool sealed_class = true;
+  static const bool sealed_class = false;
 
   /// Expiration status of the experiment "set-literals"
   static const bool set_literals = true;

pkg/compiler/test/inference/record_type_test.dart

@@ -32,7 +32,7 @@ main() {
       }
       """,
         testBackendWorld: true,
-        options: [Flags.soundNullSafety]);
+        options: ['--enable-experiment=records', Flags.soundNullSafety]);
     JClosedWorld world = env.jClosedWorld;
     final domain = world.abstractValueDomain as CommonMasks;
 

pkg/dartdev/test/commands/analyze_test.dart

@@ -448,7 +448,7 @@ analyzer:
     expect(result.exitCode, 0);
     expect(result.stdout, contains('No issues found!'));
     expect(result.stderr, contains("'records' is now enabled by default"));
-  }, skip: 'records are enabled by default in 3.0');
+  });
 
   test('--verbose', () async {
     p = project(mainSrc: '''

pkg/dds/test/dap/integration/debug_variables_test.dart

@@ -252,6 +252,8 @@ void main(List<String> args) {
       final stop = await client.hitBreakpoint(
         testFile,
         breakpointLine,
+        // TODO(dantup): Remove toolArgs when this is no longer required.
+        toolArgs: ['--enable-experiment=records'],
       );
 
       // Check the fields directly on the record.

pkg/front_end/lib/src/api_prototype/experimental_flags_generated.dart

@@ -62,7 +62,7 @@ class ExperimentalFlag {
   static const ExperimentalFlag classModifiers = const ExperimentalFlag(
       name: 'class-modifiers',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       enabledVersion: const Version(3, 0),
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0));
@@ -190,23 +190,23 @@ class ExperimentalFlag {
   static const ExperimentalFlag patterns = const ExperimentalFlag(
       name: 'patterns',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       enabledVersion: const Version(3, 0),
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0));
 
   static const ExperimentalFlag records = const ExperimentalFlag(
       name: 'records',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       enabledVersion: const Version(3, 0),
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0));
 
   static const ExperimentalFlag sealedClass = const ExperimentalFlag(
       name: 'sealed-class',
       isEnabledByDefault: true,
-      isExpired: true,
+      isExpired: false,
       enabledVersion: const Version(3, 0),
       experimentEnabledVersion: const Version(3, 0),
       experimentReleasedVersion: const Version(3, 0));