Remove timeStamp from the ChangeBuilder API

pkg/analyzer_plugin/lib/utilities/change_builder/change_builder_dart.dart

 // Copyright (c) 2017, 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.
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/src/utilities/change_builder/change_builder_dart.dart';
 import 'package:analyzer_plugin/utilities/change_builder/change_builder_core.dart';
 
 /**
  * A [ChangeBuilder] used to build changes in Dart files.
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class DartChangeBuilder implements ChangeBuilder {
   /**
    * Initialize a newly created change builder.
    */
   factory DartChangeBuilder(AnalysisDriver driver) = DartChangeBuilderImpl;
 
   @override
-  Future<Null> addFileEdit(String path, int fileStamp,
-      void buildFileEdit(DartFileEditBuilder builder));
+  Future<Null> addFileEdit(
+      String path, void buildFileEdit(DartFileEditBuilder builder));
 }
 
 /**
  * An [EditBuilder] used to build edits in Dart files.
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class DartEditBuilder implements EditBuilder {
   @override
   void addLinkedEdit(
@@ skipping 254 matching lines @@
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class DartLinkedEditBuilder implements LinkedEditBuilder {
   /**
    * Add the given [type] and all of its supertypes (other than mixins) as
    * suggestions for the current linked edit group.
    */
   void addSuperTypesAsSuggestions(DartType type);
 }