Get the rest of the shared tests for covariant to pass

pkg/analyzer/lib/src/dart/error/syntactic_errors.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.
 
 /**
  * The errors produced during syntactic analysis (scanning and parsing).
  */
 library analyzer.src.dart.error.syntactic_errors;
 
 import 'package:analyzer/error/error.dart';
@@ skipping 139 matching lines @@
   static const ParserErrorCode COVARIANT_AFTER_VAR = const ParserErrorCode(
       'COVARIANT_AFTER_VAR',
       "The modifier 'covariant' should be before the modifier 'var'.",
       "Try re-ordering the modifiers.");
 
   static const ParserErrorCode COVARIANT_AND_STATIC = const ParserErrorCode(
       'COVARIANT_AND_STATIC',
       "Members can't be declared to be both 'covariant' and 'static'.",
       "Try removing either the 'covariant' or 'static' keyword.");
 
+  static const ParserErrorCode COVARIANT_MEMBER = const ParserErrorCode(
+      'COVARIANT_MEMBER',
+      "Getters, setters and methods can't be declared to be 'covariant'.",
+      "Try removing the 'covariant' keyword.");
+
   static const ParserErrorCode COVARIANT_TOP_LEVEL_DECLARATION =
       const ParserErrorCode(
           'COVARIANT_TOP_LEVEL_DECLARATION',
           "Top-level declarations can't be declared to be covariant.",
           "Try removing the keyword 'covariant'.");
 
   static const ParserErrorCode COVARIANT_CONSTRUCTOR = const ParserErrorCode(
       'COVARIANT_CONSTRUCTOR',
       "A constructor can't be declared to be 'covariant'.",
       "Try removing the keyword 'covariant'.");
@@ skipping 811 matching lines @@
    */
   const ParserErrorCode(String name, String message, [String correction])
       : super(name, message, correction);
 
   @override
   ErrorSeverity get errorSeverity => ErrorSeverity.ERROR;
 
   @override
   ErrorType get type => ErrorType.SYNTACTIC_ERROR;
 }