Switch analysis_server to use 'package:test'.

pkg/analysis_server/test/services/refactoring/convert_getter_to_method_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.convert_getter_to_method;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart' hide ElementKind;
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../../utils.dart';
 import 'abstract_refactoring.dart';
 
 main() {
   initializeTestEnvironment();
-  defineReflectiveTests(ConvertGetterToMethodTest);
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertGetterToMethodTest);
+  });
 }
 
 @reflectiveTest
 class ConvertGetterToMethodTest extends RefactoringTest {
   ConvertGetterToMethodRefactoring refactoring;
 
   test_change_function() {
     indexTestUnit('''
 int get test => 42;
 main() {
@@ skipping 126 matching lines @@
 
   void _createRefactoringForElement(ExecutableElement element) {
     refactoring = new ConvertGetterToMethodRefactoring(searchEngine, element);
   }
 
   void _createRefactoringForString(String search) {
     ExecutableElement element = findNodeElementAtString(search);
     _createRefactoringForElement(element);
   }
 }