New analyzer snapshot, add format/formatList.

pkg/analysis_services/lib/correction/assist.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 services.correction.assist;
 
 import 'package:analysis_services/correction/change.dart';
 import 'package:analysis_services/search/search_engine.dart';
 import 'package:analysis_services/src/correction/assist.dart';
 import 'package:analyzer/src/generated/ast.dart';
@@ skipping 51 matching lines @@
           'CONVERT_INTO_EXPRESSION_BODY',
           30,
           "Convert into expression body");
   static const CONVERT_INTO_IS_NOT =
       const AssistKind('CONVERT_INTO_IS_NOT', 30, "Convert into is!");
   static const CONVERT_INTO_IS_NOT_EMPTY =
       const AssistKind('CONVERT_INTO_IS_NOT_EMPTY', 30, "Convert into 'isNotEmpty'");
   static const EXCHANGE_OPERANDS =
       const AssistKind('EXCHANGE_OPERANDS', 30, "Exchange operands");
   static const EXTRACT_CLASS =
-      const AssistKind('EXTRACT_CLASS', 30, "Extract class into file '%s'");
+      const AssistKind('EXTRACT_CLASS', 30, "Extract class into file '{0}'");
   static const IMPORT_ADD_SHOW =
       const AssistKind('IMPORT_ADD_SHOW', 30, "Add explicit 'show' combinator");
   static const INVERT_IF_STATEMENT =
       const AssistKind('INVERT_IF_STATEMENT', 30, "Invert 'if' statement");
   static const JOIN_IF_WITH_INNER =
       const AssistKind(
           'JOIN_IF_WITH_INNER',
           30,
           "Join 'if' statement with inner 'if' statement");
   static const JOIN_IF_WITH_OUTER =
@@ skipping 44 matching lines @@
 
   final name;
   final int relevance;
   final String message;
 
   const AssistKind(this.name, this.relevance, this.message);
 
   @override
   String toString() => name;
 }