Add ABSTRACT_SUPER_MEMBER_REFERENCE to error code enum.

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/dart/element/element.dart';
 import 'package:analyzer/error/listener.dart';
@@ skipping 421 matching lines @@
     CompileTimeErrorCode.UNDEFINED_CONSTRUCTOR_IN_INITIALIZER,
     CompileTimeErrorCode.UNDEFINED_CONSTRUCTOR_IN_INITIALIZER_DEFAULT,
     CompileTimeErrorCode.UNDEFINED_NAMED_PARAMETER,
     CompileTimeErrorCode.URI_DOES_NOT_EXIST,
     CompileTimeErrorCode.URI_WITH_INTERPOLATION,
     CompileTimeErrorCode.WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR,
     CompileTimeErrorCode.WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR_MINUS,
     CompileTimeErrorCode.WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER,
     CompileTimeErrorCode.YIELD_EACH_IN_NON_GENERATOR,
     CompileTimeErrorCode.YIELD_IN_NON_GENERATOR,
+    HintCode.ABSTRACT_SUPER_MEMBER_REFERENCE,
     HintCode.ARGUMENT_TYPE_NOT_ASSIGNABLE,
     HintCode.CAN_BE_NULL_AFTER_NULL_AWARE,
     HintCode.DEAD_CODE,
     HintCode.DEAD_CODE_CATCH_FOLLOWING_CATCH,
     HintCode.DEAD_CODE_ON_CATCH_SUBTYPE,
     HintCode.DEPRECATED_MEMBER_USE,
     HintCode.DUPLICATE_IMPORT,
     HintCode.DIVISION_OPTIMIZATION,
     HintCode.INVALID_FACTORY_ANNOTATION,
     HintCode.INVALID_FACTORY_METHOD_DECL,
@@ skipping 657 matching lines @@
 
   @override
   int get hashCode => ordinal;
 
   @override
   int compareTo(ErrorType other) => ordinal - other.ordinal;
 
   @override
   String toString() => name;
 }