Replace @ReflectiveTestCase() with @reflectiveTest.

pkg/analysis_server/test/services/completion/completion_computer_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.completion.suggestion;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/completion_manager.dart';
@@ skipping 21 matching lines @@
  */
 Future pumpEventQueue([int times = 20]) {
   if (times == 0) return new Future.value();
   // We use a delayed future to allow microtask events to finish. The
   // Future.value or Future() constructors use scheduleMicrotask themselves and
   // would therefore not wait for microtask callbacks that are scheduled after
   // invoking this method.
   return new Future.delayed(Duration.ZERO, () => pumpEventQueue(times - 1));
 }
 
-@ReflectiveTestCase()
+@reflectiveTest
 class DartCompletionManagerTest extends AbstractSingleUnitTest {
   Index index;
   SearchEngineImpl searchEngine;
   Source source;
   CompletionPerformance perf;
   DartCompletionManager manager;
   MockCompletionComputer computer1;
   MockCompletionComputer computer2;
   CompletionSuggestion suggestion1;
   CompletionSuggestion suggestion2;
@@ skipping 149 matching lines @@
   @override
   Future<bool> computeFull(DartCompletionRequest request) {
     this.request = request;
     fullCount++;
     if (fullSuggestion != null) {
       request.suggestions.add(fullSuggestion);
     }
     return new Future.value(fullSuggestion != null);
   }
 }