Generate constants in server as we do in plugin

pkg/analysis_server/test/analysis/reanalyze_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_constants.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
-import 'package:analysis_server/src/constants.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../analysis_abstract.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(ReanalyzeTest);
   });
 }
 
 @reflectiveTest
 class ReanalyzeTest extends AbstractAnalysisTest {
   Map<String, List<AnalysisError>> filesErrors = {};
 
   Completer _resultsAvailable = new Completer();
 
   @override
   void processNotification(Notification notification) {
-    if (notification.event == ANALYSIS_ERRORS) {
+    if (notification.event == ANALYSIS_NOTIFICATION_ERRORS) {
       var decoded = new AnalysisErrorsParams.fromNotification(notification);
       filesErrors[decoded.file] = decoded.errors;
       _resultsAvailable.complete(null);
     }
   }
 
   test_reanalyze() {
     createProject();
     Map drivers = server.driverMap;
     expect(drivers, hasLength(1));
-    Request request = new Request("0", ANALYSIS_REANALYZE);
+    Request request = new Request("0", ANALYSIS_REQUEST_REANALYZE);
     handleSuccessfulRequest(request);
     drivers = server.driverMap;
     expect(drivers, hasLength(1));
   }
 
   test_reanalyze_with_overlay() async {
     createProject();
     resourceProvider.newFolder(testFolder);
     resourceProvider.newFile(testFile, 'main() {}');
     // Update the content with an overlay that contains a syntax error.
@@ skipping 16 matching lines @@
     // Verify that the syntax error is present (this indicates that the
     // content introduced by the call to updateContent is still in effect).
     {
       List<AnalysisError> errors = filesErrors[testFile];
       expect(errors, hasLength(1));
     }
   }
 
   test_sentToPlugins() async {
     createProject();
-    Request request = new Request("0", ANALYSIS_REANALYZE);
+    Request request = new Request("0", ANALYSIS_REQUEST_REANALYZE);
     handleSuccessfulRequest(request);
     // verify
     expect(pluginManager.broadcastedRequest, isNotNull);
   }
 }