+ quick fix for INVALID_REOPEN_ANNOTATION

Change-Id: I1778edea4371ce84efaab5e2a64e14ee035d0500
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/366883
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Phil Quitslund <[email protected]>

Author: pq

pkg/analysis_server/lib/src/services/correction/error_fix_status.yaml

@@ -3711,9 +3711,7 @@ WarningCode.INVALID_NON_VIRTUAL_ANNOTATION:
 WarningCode.INVALID_OVERRIDE_OF_NON_VIRTUAL_MEMBER:
   status: noFix
 WarningCode.INVALID_REOPEN_ANNOTATION:
-  status: needsFix
-  notes: |-
-    The fix is to remove the annotation.
+  status: hasFix
 WarningCode.INVALID_REQUIRED_NAMED_PARAM:
   status: hasFix
 WarningCode.INVALID_REQUIRED_OPTIONAL_POSITIONAL_PARAM:

pkg/analysis_server/lib/src/services/correction/fix_internal.dart

@@ -1429,6 +1429,9 @@ final _builtInNonLintProducers = <ErrorCode, List<ProducerGenerator>>{
   WarningCode.INVALID_NON_VIRTUAL_ANNOTATION: [
     RemoveAnnotation.new,
   ],
+  WarningCode.INVALID_REOPEN_ANNOTATION: [
+    RemoveAnnotation.new,
+  ],
   WarningCode.INVALID_REQUIRED_NAMED_PARAM: [
     RemoveAnnotation.new,
   ],

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

@@ -240,6 +240,24 @@ extension type E(C c) implements C {
 ''');
   }
 
+  Future<void> test_reopen() async {
+    await resolveTestCode('''
+import 'package:meta/meta.dart';
+
+class A {}
+
+@reopen
+base class B extends A {}
+''');
+    await assertHasFix('''
+import 'package:meta/meta.dart';
+
+class A {}
+
+base class B extends A {}
+''');
+  }
+
   Future<void> test_required_namedWithDefault() async {
     await resolveTestCode('''
 import 'package:meta/meta.dart';