Convert more tests to the new driver

pkg/analysis_server/test/analysis/notification_navigation_test.dart

Index: pkg/analysis_server/test/analysis/notification_navigation_test.dart
diff --git a/pkg/analysis_server/test/analysis/notification_navigation_test.dart b/pkg/analysis_server/test/analysis/notification_navigation_test.dart
index 326be5d9ce1729e50842320cbfd24c23a2b1489f..9286182f63b5e18e014e55569b8ff7a25026b3e2 100644
--- a/pkg/analysis_server/test/analysis/notification_navigation_test.dart
+++ b/pkg/analysis_server/test/analysis/notification_navigation_test.dart
@@ -179,12 +179,11 @@ class AbstractNavigationTest extends AbstractAnalysisTest {
 
 @reflectiveTest
 class AnalysisNotificationNavigationTest extends AbstractNavigationTest {
-  @override
-  bool get enableNewAnalysisDriver => false;
+  Completer _resultsAvailable = new Completer();
 
   Future prepareNavigation() async {
     addAnalysisSubscription(AnalysisService.NAVIGATION, testFile);
-    await waitForTasksFinished();
+    await _resultsAvailable.future;
     assertRegionsSorted();
   }
 
@@ -195,6 +194,7 @@ class AnalysisNotificationNavigationTest extends AbstractNavigationTest {
         regions = params.regions;
         targets = params.targets;
         targetFiles = params.files;
+        _resultsAvailable.complete(null);
       }
     }
   }