Make more use of generated classes in analysis server.

pkg/analysis_server/lib/src/services/refactoring/rename_class_member.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.src.refactoring.rename_class_member;
 
 import 'dart:async';
 
+import 'package:analysis_server/src/protocol2.dart' show SourceEdit;
 import 'package:analysis_server/src/services/correction/change.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analysis_server/src/services/search/hierarchy.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/correction/util.dart';
 import 'package:analysis_server/src/services/refactoring/naming_conventions.dart';
 import 'package:analysis_server/src/services/refactoring/rename.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/java_core.dart';
@@ skipping 81 matching lines @@
           continue;
         }
         // check the element being renamed is accessible
         {
           LibraryElement whereLibrary = reference.element.library;
           if (!element.isAccessibleIn(whereLibrary)) {
             continue;
           }
         }
         // add edit
-        Edit edit = createReferenceEdit(reference, newName);
-        _markEditAsPotential(edit);
+        SourceEdit edit = createReferenceEdit(reference, newName,
+            id: _newPotentialId());
         change.addEdit(reference.file, edit);
       }
     }).then((_) => change);
   }
 
-  void _markEditAsPotential(Edit edit) {
+  String _newPotentialId() {
     String id = potentialEditIds.length.toString();
     potentialEditIds.add(id);
-    edit.id = id;
+    return id;
   }
 }
 
 
 /**
  * Helper to check if renaming of an [Element] to the given name will cause any
  * problems.
  */
 class _RenameClassMemberValidator {
   final SearchEngine searchEngine;
@@ skipping 101 matching lines @@
   Future _prepareReferences() {
     return _prepareElements().then((_) {
       return Future.forEach(elements, (Element element) {
         return searchEngine.searchReferences(element).then((references) {
           this.references.addAll(references);
         });
       });
     });
   }
 }