Reverse the sense of the flag to make it easier to find test that need to be converted

pkg/analysis_server/test/search/element_references_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/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'abstract_search_domain.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(ElementReferencesTest);
   });
 }
 
 @reflectiveTest
 class ElementReferencesTest extends AbstractSearchDomainTest {
   Element searchElement;
 
+  @override
+  bool get enableNewAnalysisDriver => false;
+
   void assertHasRef(SearchResultKind kind, String search, bool isPotential) {
     assertHasResult(kind, search);
     expect(result.isPotential, isPotential);
   }
 
   Future<Null> findElementReferences(
       String search, bool includePotential) async {
     int offset = findOffset(search);
     await waitForTasksFinished();
     Request request = new SearchFindElementReferencesParams(
             testFile, offset, includePotential)
         .toRequest('0');
     Response response = await waitResponse(request);
     var result = new SearchFindElementReferencesResult.fromResponse(response);
     searchId = result.id;
     searchElement = result.element;
     if (searchId != null) {
       await waitForSearchResults();
     }
     expect(serverErrors, isEmpty);
   }
 
-  @override
-  void setUp() {
-    enableNewAnalysisDriver = false;
-    super.setUp();
-  }
-
   test_constructor_named() async {
     addTestFile('''
 class A {
   A.named(p);
 }
 main() {
   new A.named(1);
   new A.named(2);
 }
 ''');
@@ skipping 607 matching lines @@
   T m() => null;
 }
 ''');
     await findElementReferences('T> {', false);
     expect(searchElement.kind, ElementKind.TYPE_PARAMETER);
     expect(results, hasLength(2));
     assertHasResult(SearchResultKind.REFERENCE, 'T f;');
     assertHasResult(SearchResultKind.REFERENCE, 'T m()');
   }
 }