Server custom error severity support (#24452).

pkg/analyzer/lib/src/task/dart.dart

Index: pkg/analyzer/lib/src/task/dart.dart
diff --git a/pkg/analyzer/lib/src/task/dart.dart b/pkg/analyzer/lib/src/task/dart.dart
index 3d7732d77d4c854ee780242c9e91c2fbebfd3988..773515cb53760f158eedd4532049376f862e8451 100644
--- a/pkg/analyzer/lib/src/task/dart.dart
+++ b/pkg/analyzer/lib/src/task/dart.dart
@@ -2297,19 +2297,11 @@ class DartErrorsTask extends SourceBasedAnalysisTask {
       String inputName = result.name + '_input';
       errorLists.add(getRequiredInput(inputName));
     }
-
-    //
-    // Gather error filters.
-    //
-    List<ErrorFilter> filters =
-        context.getConfigurationData(CONFIGURED_ERROR_FILTERS);
     for (ResultDescriptor result in enginePlugin.dartErrorsForUnit) {
       String inputName = result.name + '_input';
       Map<Source, List<AnalysisError>> errorMap = getRequiredInput(inputName);
       for (List<AnalysisError> errors in errorMap.values) {
-        errorLists.add(errors.where((AnalysisError error) {
-          return !filters.any((ErrorFilter filter) => filter(error));
-        }).toList());
+        errorLists.add(errors);
       }
     }
     //