Streamline AnalysisDriver status tracking.

pkg/analyzer/test/src/dart/analysis/base.dart

 // Copyright (c) 2016, 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 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
@@ skipping 106 matching lines @@
         new SourceFactory([
           new DartUriResolver(sdk),
           generatedUriResolver,
           new PackageMapUriResolver(provider, <String, List<Folder>>{
             'test': [provider.getFolder(testProject)]
           }),
           new ResourceUriResolver(provider)
         ], null, provider),
         new AnalysisOptionsImpl()..strongMode = true);
     scheduler.start();
-    driver.status.listen(allStatuses.add);
+    scheduler.status.listen(allStatuses.add);
     driver.results.listen(allResults.add);
     driver.exceptions.listen(allExceptions.add);
   }
 
   String _p(String path) => provider.convertPath(path);
 }
 
 /**
  * Wraps an [_ElementVisitorFunction] into a [GeneralizingElementVisitor].
  */
 class _ElementVisitorFunctionWrapper extends GeneralizingElementVisitor {
   final _ElementVisitorFunction function;
 
   _ElementVisitorFunctionWrapper(this.function);
 
   visitElement(Element element) {
     function(element);
     super.visitElement(element);
   }
 }
 
 class _GeneratedUriResolverMock extends TypedMock implements UriResolver {}