Move kernel baseline tests to front_end.

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

Index: pkg/front_end/test/fasta/rasta/cascades.dart
diff --git a/pkg/front_end/test/fasta/rasta/cascades.dart b/pkg/front_end/test/fasta/rasta/cascades.dart
deleted file mode 100644
index add829eb1c09412da28dca750622fa8754ffa4b0..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/rasta/cascades.dart
+++ /dev/null
@@ -1,13 +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.
-
-class A {
-  add(x) => x;
-}
-
-main() {
-  var a = new A();
-  f(x) => x;
-  a..add(f)('WHAT');
-}