Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/mixin.dart

Index: pkg/front_end/test/fasta/mixin.dart
diff --git a/pkg/front_end/test/fasta/mixin.dart b/pkg/front_end/test/fasta/mixin.dart
deleted file mode 100644
index e88898ed022917132ee1f12c0a93ce9223bf2cdd..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/mixin.dart
+++ /dev/null
@@ -1,34 +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.
-
-class B extends Object with M1, M2 {
-  B(value);
-}
-
-abstract class M1 {
-  m() => print("M1");
-}
-
-abstract class M2 {
-  m() => print("M2");
-}
-
-class C extends Object with M1, M2 {
-  C(value);
-}
-
-abstract class G1<T> {
-  m() => print(T);
-}
-
-class D<S> extends Object with G1<S> {
-}
-
-main() {
-  new B(null).m();
-  new C(null).m();
-  new D().m();
-  new D<int>().m();
-  new D<List<int>>().m();
-}