Make more use of generated code in analysis server.

pkg/analysis_server/test/services/refactoring/extract_local_test.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 test.services.refactoring.extract_local;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol2.dart';
-import 'package:analysis_server/src/services/correction/change.dart';
 import 'package:analysis_server/src/services/refactoring/extract_local.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart';
 
 import 'abstract_refactoring.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(ExtractLocalTest);
@@ skipping 848 matching lines @@
           expectedMessage: 'Expression must be selected to activate this refactoring.');
     });
   }
 
   /**
    * Checks that all conditions are OK and the result of applying the [Change]
    * to [testUnit] is [expectedCode].
    */
   Future _assertSuccessfulRefactoring(String expectedCode) {
     return assertRefactoringConditionsOK().then((_) {
-      return refactoring.createChange().then((Change refactoringChange) {
+      return refactoring.createChange().then((SourceChange refactoringChange) {
         this.refactoringChange = refactoringChange;
         assertTestChangeResult(expectedCode);
       });
     });
   }
 
   void _createRefactoring(int offset, int length) {
     refactoring = new ExtractLocalRefactoringImpl(testUnit, offset, length);
     refactoring.name = 'res';
   }
 
   /**
    * Creates a new refactoring in [refactoring] for the selection range of the
    * given [search] pattern.
    */
   void _createRefactoringForString(String search) {
     int offset = findOffset(search);
     int length = search.length;
     _createRefactoring(offset, length);
   }
 
   void _createRefactoringWithSuffix(String selectionSearch, String suffix) {
     int offset = findOffset(selectionSearch + suffix);
     int length = selectionSearch.length;
     _createRefactoring(offset, length);
   }
 }