Add DartWorkManager to manage Dart-specific results computation scheduling.

pkg/analyzer/test/src/task/test_all.dart

Index: pkg/analyzer/test/src/task/test_all.dart
diff --git a/pkg/analyzer/test/src/task/test_all.dart b/pkg/analyzer/test/src/task/test_all.dart
index 2e13aaeda3bdb44619151387e1cce90512290cdc..2b6de23911a2e24960edcb406a4aadc135996d42 100644
--- a/pkg/analyzer/test/src/task/test_all.dart
+++ b/pkg/analyzer/test/src/task/test_all.dart
@@ -7,6 +7,7 @@ library test.src.task.test_all;
 import 'package:unittest/unittest.dart';
 
 import 'dart_test.dart' as dart_test;
+import 'dart_work_manager_test.dart' as dart_work_manager_test;
 import 'driver_test.dart' as driver_test;
 import 'general_test.dart' as general_test;
 import 'incremental_element_builder_test.dart'
@@ -20,6 +21,7 @@ main() {
   groupSep = ' | ';
   group('task tests', () {
     dart_test.main();
+    dart_work_manager_test.main();
     driver_test.main();
     general_test.main();
     incremental_element_builder_test.main();