Add AnalysisContext.onResultInvalidated(descriptor).

pkg/analysis_server/test/plugin/set_analysis_domain_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.plugin.analysis_contributor;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/analysis/analysis_domain.dart';
 import 'package:analysis_server/plugin/analysis/navigation/navigation.dart';
@@ skipping 131 matching lines @@
   @override
   void registerExtensions(RegisterExtension register) {
     register(SET_ANALYSIS_DOMAIN_EXTENSION_POINT_ID, _setAnalysisDomain);
     register(NAVIGATION_CONTRIBUTOR_EXTENSION_POINT_ID,
         new TestNavigationContributor(test));
     register(OCCURRENCES_CONTRIBUTOR_EXTENSION_POINT_ID,
         new TestOccurrencesContributor(test));
   }
 
   void _setAnalysisDomain(AnalysisDomain domain) {
-    domain.onResultComputed(PARSED_UNIT).listen((result) {
+    domain.onResultChanged(PARSED_UNIT).listen((result) {
       expect(result.context, isNotNull);
       expect(result.target, isNotNull);
       expect(result.value, isNotNull);
       Source source = result.target.source;
       test.parsedUnitFiles.add(source.fullName);
       domain.scheduleNotification(
           result.context, source, AnalysisService.NAVIGATION);
       domain.scheduleNotification(
           result.context, source, AnalysisService.OCCURRENCES);
     });
   }
 }