Change integration test notifications to use structured objects.

pkg/analysis_server/test/integration/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.
 
 library test.integration.analysis.reanalyze;
 
-import '../../reflective_tests.dart';
+import 'package:analysis_server/src/protocol.dart';
 import 'package:unittest/unittest.dart';
 
+import '../../reflective_tests.dart';
 import '../integration_tests.dart';
 
 @ReflectiveTestCase()
 class Test extends AbstractAnalysisServerIntegrationTest {
   test_reanalyze() {
     String pathname = sourcePath('test.dart');
     String text = 'main() {}';
     writeFile(pathname, text);
     standardAnalysisSetup();
     return analysisFinished.then((_) {
       // Make sure that reanalyze causes analysis to restart.
       bool analysisRestarted = false;
-      onServerStatus.listen((data) {
-        if (data.containsKey('analysis')) {
-          if (data['analysis']['isAnalyzing']) {
+      onServerStatus.listen((ServerStatusParams data) {
+        if (data.analysis != null) {
+          if (data.analysis.isAnalyzing) {
             analysisRestarted = true;
           }
         }
       });
       sendAnalysisReanalyze();
       return analysisFinished.then((_) {
         expect(analysisRestarted, isTrue);
       });
     });
   }
 }
 
 main() {
   runReflectiveTests(Test);
 }