Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/rasta/native_is_illegal.dart

Index: pkg/front_end/test/fasta/rasta/native_is_illegal.dart
diff --git a/pkg/front_end/test/fasta/rasta/native_is_illegal.dart b/pkg/front_end/test/fasta/rasta/native_is_illegal.dart
deleted file mode 100644
index 84b8275ca93199edcf828de6704b5a6cc0749b80..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/rasta/native_is_illegal.dart
+++ /dev/null
@@ -1,12 +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.md file.
-
-foo() native "foo";
-
-class Bar {
-  Bar get x native "Bar_get_x";
-  set x(Bar value) native "Bar_set_x";
-  f() native "Bar_f";
-  factory Bar() native "Bar_constructor";
-}