Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/default_values.dart

Index: pkg/front_end/test/fasta/default_values.dart
diff --git a/pkg/front_end/test/fasta/default_values.dart b/pkg/front_end/test/fasta/default_values.dart
deleted file mode 100644
index de8ccc5df3c3ae1e980a989713babc435727e6b7..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/default_values.dart
+++ /dev/null
@@ -1,9 +0,0 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-topLevel([a = 42]) => a;
-
-main() {
-  print(topLevel());
-}