extract LocalConstructorContributor from local reference contributor

pkg/analysis_server/test/services/completion/dart/test_all.dart

Index: pkg/analysis_server/test/services/completion/dart/test_all.dart
diff --git a/pkg/analysis_server/test/services/completion/dart/test_all.dart b/pkg/analysis_server/test/services/completion/dart/test_all.dart
index 5ea14463da8eb3b3d3f260dc3c4c85e3a9e4398d..f4786eeaae6d8fe628a1692c6444e5312c578cc8 100644
--- a/pkg/analysis_server/test/services/completion/dart/test_all.dart
+++ b/pkg/analysis_server/test/services/completion/dart/test_all.dart
@@ -16,6 +16,7 @@ import 'keyword_contributor_test.dart' as keyword_test;
 import 'label_contributor_test.dart' as label_contributor_test;
 import 'library_member_contributor_test.dart' as library_member_test;
 import 'library_prefix_contributor_test.dart' as library_prefix_test;
+import 'local_constructor_contributor_test.dart' as local_constructor_test;
 import 'named_constructor_contributor_test.dart' as named_contributor_test;
 import 'static_member_contributor_test.dart' as static_contributor_test;
 import 'type_member_contributor_test.dart' as type_member_contributor_test;
@@ -34,6 +35,7 @@ main() {
     label_contributor_test.main();
     library_member_test.main();
     library_prefix_test.main();
+    local_constructor_test.main();
     named_contributor_test.main();
     static_contributor_test.main();
     type_member_contributor_test.main();