Support --persistent_worker flag in --build-mode.

pkg/analyzer_cli/test/all.dart

Index: pkg/analyzer_cli/test/all.dart
diff --git a/pkg/analyzer_cli/test/all.dart b/pkg/analyzer_cli/test/all.dart
index 1fd1dd7d002db7458756ce716ca494165007615c..13f72d1388fb3a24e2ca32c5acc6902c374c8a8b 100644
--- a/pkg/analyzer_cli/test/all.dart
+++ b/pkg/analyzer_cli/test/all.dart
@@ -3,6 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'boot_loader_test.dart' as boot_loader;
+import 'build_mode_test.dart' as build_mode_test;
 import 'driver_test.dart' as driver;
 import 'error_test.dart' as error;
 import 'options_test.dart' as options;
@@ -16,6 +17,7 @@ import 'super_mixin_test.dart' as super_mixin;
 
 main() {
   boot_loader.main();
+  build_mode_test.main();
   driver.main();
   // TODO(pq): fix tests to run safely on the bots
   // https://github.com/dart-lang/sdk/issues/25001