Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/rasta/unresolved_for_in.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 'dart:collection' as collection;
-
-typedef void VoidFunction();
-
-class Fisk {
-  it1(x) {
-    for (key in x) {
-      print(key);
-    }
-    for (Fisk in x) {
-      print(Fisk);
-    }
-    for (collection in x) {
-      print(collection);
-    }
-    for (VoidFunction in x) {
-      print(VoidFunction);
-    }
-    for (1 in x) {
-      print(key);
-    }
-  }
-}
-
-main(arguments) {
-  new Fisk();
-  for (key in arguments) {
-    print(key);
-  }
-  for (Fisk in arguments) {
-    print(Fisk);
-  }
-  for (collection in arguments) {
-    print(collection);
-  }
-  for (VoidFunction in arguments) {
-    print(VoidFunction);
-  }
-  for (1 in arguments) {
-    print(key);
-  }
-}