Server custom error severity support (#24452).

pkg/analyzer/lib/src/generated/error.dart

Index: pkg/analyzer/lib/src/generated/error.dart
diff --git a/pkg/analyzer/lib/src/generated/error.dart b/pkg/analyzer/lib/src/generated/error.dart
index 5ea9c4cfb1df131b860bd145336519e98e99e4dd..621b72d33fe872cfac742a41adc962c9a6a80c9f 100644
--- a/pkg/analyzer/lib/src/generated/error.dart
+++ b/pkg/analyzer/lib/src/generated/error.dart
@@ -6,6 +6,7 @@ library analyzer.src.generated.error;
 
 import 'dart:collection';
 
+import 'package:analyzer/source/error_processor.dart';
 import 'package:analyzer/src/generated/ast.dart' show AstNode;
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/java_core.dart';
@@ -18,18 +19,11 @@ import 'package:analyzer/task/model.dart';
 import 'package:source_span/source_span.dart';
 
 /**
- * The descriptor used to associate error filters with analysis contexts in
+ * The descriptor used to associate error processors with analysis contexts in
  * configuration data.
  */
-final ListResultDescriptor<List<ErrorFilter>> CONFIGURED_ERROR_FILTERS =
-    new ListResultDescriptorImpl('configured.errors', const <ErrorFilter>[]);
-
-/**
- * A predicate used to potentially filter an [error].
- *
- * Returns `true` if this error should be filtered from analysis results.
- */
-typedef bool ErrorFilter(AnalysisError error);
+final ListResultDescriptor<List<ErrorProcessor>> CONFIGURED_ERROR_PROCESSORS =
+    new ListResultDescriptorImpl('configured.errors', const <ErrorProcessor>[]);
 
 /**
  * An error discovered during the analysis of some Dart code.