Server custom error severity support (#24452).

pkg/analyzer/test/source/test_all.dart

Index: pkg/analyzer/test/source/test_all.dart
diff --git a/pkg/analyzer/test/source/test_all.dart b/pkg/analyzer/test/source/test_all.dart
index ac6f7f24bed9d40a5d40c3f0387d56d6750620ab..725d23eeaddf2eb7ac4cc06363cec99cafe95642 100644
--- a/pkg/analyzer/test/source/test_all.dart
+++ b/pkg/analyzer/test/source/test_all.dart
@@ -9,6 +9,7 @@ import 'package:unittest/unittest.dart';
 import '../utils.dart';
 import 'analysis_options_provider_test.dart' as analysis_options_provider_test;
 import 'embedder_test.dart' as embedder_test;
+import 'error_processor_test.dart' as error_processor_test;
 import 'package_map_provider_test.dart' as package_map_provider_test;
 import 'package_map_resolver_test.dart' as package_map_resolver_test;
 import 'path_filter_test.dart' as path_filter_test;
@@ -20,6 +21,7 @@ main() {
   group('source', () {
     analysis_options_provider_test.main();
     embedder_test.main();
+    error_processor_test.main();
     package_map_provider_test.main();
     package_map_resolver_test.main();
     path_filter_test.main();