Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/rasta/issue_000068.dart.dartk.expect

-library;
-import self as self;
-import "dart:core" as core;
-import "package:expect/expect.dart" as exp;
-
-class G<T extends core::Object> extends core::Object {
-  constructor •() → self::G<self::G::T>
-    : super core::Object::•();
-}
-class A extends core::Object {
-  constructor •() → self::A
-    : super core::Object::•();
-}
-class B extends self::A {
-  constructor •() → self::B
-    : super self::A::•();
-}
-class C extends self::B {
-  constructor •() → self::C
-    : super self::B::•();
-}
-static method main() → dynamic {
-  exp::Expect::isFalse(new self::G::•<self::B>() is self::G<self::C>);
-  exp::Expect::isFalse(new self::G::•<self::A>() is self::G<self::B>);
-  exp::Expect::isFalse(new self::G::•<self::A>() is self::G<self::C>);
-  exp::Expect::isFalse(new self::G::•<core::Object>() is self::G<self::B>);
-  exp::Expect::isFalse(new self::G::•<core::int>() is self::G<self::B>);
-  exp::Expect::isFalse(new self::G::•<core::int>() is self::G<core::double>);
-  exp::Expect::isFalse(new self::G::•<core::int>() is self::G<core::String>);
-}