Replace @ReflectiveTestCase() with @reflectiveTest.

pkg/analyzer/test/generated/incremental_scanner_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 engine.incremental_scanner_test;
 
 import 'package:analyzer/src/generated/incremental_scanner.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:unittest/unittest.dart';
 
 import '../reflective_tests.dart';
 import 'test_support.dart';
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(IncrementalScannerTest);
 }
 
-@ReflectiveTestCase()
+@reflectiveTest
 class IncrementalScannerTest extends EngineTestCase {
   /**
    * The first token from the token stream resulting from parsing the original
    * source, or `null` if [scan] has not been invoked.
    */
   Token _originalTokens;
 
   /**
    * The scanner used to perform incremental scanning, or `null` if [scan] has
    * not been invoked.
@@ skipping 527 matching lines @@
         incrementalToken.type,
         same(TokenType.EOF),
         reason: "Too many tokens");
     expect(
         modifiedTokens.type,
         same(TokenType.EOF),
         reason: "Not enough tokens");
     // TODO(brianwilkerson) Verify that the errors are correct?
   }
 }