Update some of the fixes to use ChangeBuilder

pkg/analysis_server/test/services/correction/fix_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.
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/plugin/edit/fix/fix_dart.dart';
 import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analysis_server/src/services/correction/fix_internal.dart';
@@ skipping 1252 matching lines @@
     expect(
         SourceEdit.applySequence(libCode, fileEdit.edits),
         r'''
 library my.lib;
 
 class A {}
 
 class Test {
 }
 ''');
-    expect(change.linkedEditGroups, isEmpty);
+    expect(change.linkedEditGroups, hasLength(1));
   }
 
   test_createClass_innerLocalFunction() async {
     await resolveTestUnit('''
 f() {
   g() {
     Test v = null;
   }
 }
 ''');
@@ skipping 5618 matching lines @@
   @override
   final AnalysisError error;
 
   _DartFixContextImpl(this.resourceProvider, this.analysisDriver,
       this.astProvider, this.unit, this.error);
 
   @override
   GetTopLevelDeclarations get getTopLevelDeclarations =>
       analysisDriver.getTopLevelNameDeclarations;
 }