Add --x-perf-report flag to the dartanalyzer command

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 6b59a6a5af3853d2f1056a475d502ad32089abbd..ea55810d4c276fd135d991018c5009714124f17a 100644
--- a/pkg/analyzer_cli/test/all.dart
+++ b/pkg/analyzer_cli/test/all.dart
@@ -5,6 +5,7 @@
 import 'driver_test.dart' as driver;
 import 'error_test.dart' as error;
 import 'options_test.dart' as options;
+import 'perf_report_test.dart' as perf;
 import 'plugin_manager_test.dart' as plugin_manager;
 import 'reporter_test.dart' as reporter;
 import 'super_mixin_test.dart' as super_mixin;
@@ -19,6 +20,7 @@ main() {
   //strong_mode.main();
   error.main();
   options.main();
+  perf.main();
   plugin_manager.main();
   reporter.main();
   super_mixin.main();