Add tests for KernelDriver.

pkg/front_end/test/src/incremental/test_all.dart

Index: pkg/front_end/test/src/incremental/test_all.dart
diff --git a/pkg/front_end/test/src/incremental/test_all.dart b/pkg/front_end/test/src/incremental/test_all.dart
index 3f98c83cb11ae029026c06c02dd05b715b124e0d..d87f23adfd630a2367363ffe2a5c66662d4c0ceb 100644
--- a/pkg/front_end/test/src/incremental/test_all.dart
+++ b/pkg/front_end/test/src/incremental/test_all.dart
@@ -7,6 +7,7 @@ import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'byte_store_test.dart' as byte_store;
 import 'file_state_test.dart' as file_state;
 import 'format_test.dart' as format;
+import 'kernel_driver_test.dart' as kernel_driver;
 
 /// Utility for manually running all tests.
 main() {
@@ -14,5 +15,6 @@ main() {
     byte_store.main();
     file_state.main();
     format.main();
+    kernel_driver.main();
   }, name: 'incremental');
 }