Get the rest of the shared tests for covariant to pass

pkg/analyzer/lib/error/error.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.error.error;
 
 import 'dart:collection';
 
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart' show ScannerErrorCode;
@@ skipping 293 matching lines @@
   ParserErrorCode.CONST_CONSTRUCTOR_WITH_BODY,
   ParserErrorCode.CONST_ENUM,
   ParserErrorCode.CONST_FACTORY,
   ParserErrorCode.CONST_METHOD,
   ParserErrorCode.CONST_TYPEDEF,
   ParserErrorCode.CONTINUE_OUTSIDE_OF_LOOP,
   ParserErrorCode.CONTINUE_WITHOUT_LABEL_IN_CASE,
   ParserErrorCode.COVARIANT_AFTER_VAR,
   ParserErrorCode.COVARIANT_AND_STATIC,
   ParserErrorCode.COVARIANT_CONSTRUCTOR,
+  ParserErrorCode.COVARIANT_MEMBER,
   ParserErrorCode.COVARIANT_TOP_LEVEL_DECLARATION,
   ParserErrorCode.DEFAULT_VALUE_IN_FUNCTION_TYPE,
   ParserErrorCode.DIRECTIVE_AFTER_DECLARATION,
   ParserErrorCode.DUPLICATED_MODIFIER,
   ParserErrorCode.DUPLICATE_LABEL_IN_SWITCH_STATEMENT,
   ParserErrorCode.EMPTY_ENUM_BODY,
   ParserErrorCode.ENUM_IN_CLASS,
   ParserErrorCode.EQUALITY_CANNOT_BE_EQUALITY_OPERAND,
   ParserErrorCode.EXPECTED_CASE_OR_DEFAULT,
   ParserErrorCode.EXPECTED_CLASS_MEMBER,
@@ skipping 573 matching lines @@
 
   @override
   int get hashCode => ordinal;
 
   @override
   int compareTo(ErrorProperty other) => ordinal - other.ordinal;
 
   @override
   String toString() => name;
 }