Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/rasta/issue_000067.dart

-// 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.
-
-import "package:expect/expect.dart";
-
-class A {
-  A() {}
-  factory A.foo() = C.bar;
-  int m() {}
-}
-
-class C extends A {
-  C() {}
-  factory C.bar() = D;
-  int m() { return 1; }
-}
-
-class D extends C {
-  int m() { return 2; }
-}
-
-main() {
-  A a = new A.foo();
-  Expect.equals(2, a.m());
-}