Run src/task/strong tests with analysis driver.

pkg/analyzer/test/src/task/strong/non_null_checker_test.dart

Index: pkg/analyzer/test/src/task/strong/non_null_checker_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/non_null_checker_test.dart b/pkg/analyzer/test/src/task/strong/non_null_checker_test.dart
index bce92c3cf22eec369f1989932fcab63a5f6b7955..458b4c1199535c6aca4a750ca985bcee3d2abee1 100644
--- a/pkg/analyzer/test/src/task/strong/non_null_checker_test.dart
+++ b/pkg/analyzer/test/src/task/strong/non_null_checker_test.dart
@@ -16,6 +16,7 @@ import '../strong/strong_test_helper.dart';
 void main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(NonNullCheckerTest);
+    defineReflectiveTests(NonNullCheckerTest_Driver);
   });
 }
 
@@ -314,3 +315,9 @@ class A {
     await check(nonnullableTypes: <String>['dart:core,int']);
   }
 }
+
+@reflectiveTest
+class NonNullCheckerTest_Driver extends NonNullCheckerTest {
+  @override
+  bool get enableNewAnalysisDriver => true;
+}