Move kernel baseline tests to front_end.

pkg/kernel/testcases/strong-mode/redirecting_factory.baseline.txt

-library;
-import self as self;
-import "dart:core" as core;
-
-abstract class FooBase<Tf extends core::Object> extends core::Object {
-  abstract get x() → core::int;
-}
-abstract class Foo<T extends core::Object> extends core::Object implements self::FooBase<dynamic> {
-}
-class Bar<Sb extends core::Object, Tb extends core::Object> extends core::Object implements self::Foo<self::Bar::Tb> {
-  field core::int x;
-  constructor •(core::int x) → void
-    : self::Bar::x = x, super core::Object::•() {
-    core::print("Bar<${self::Bar::Sb},${self::Bar::Tb}>");
-  }
-}
-abstract class SimpleCase<A extends core::Object, B extends core::Object> extends core::Object {
-}
-abstract class SimpleCaseImpl<Ai extends core::Object, Bi extends core::Object> extends core::Object implements self::SimpleCase<self::SimpleCaseImpl::Ai, self::SimpleCaseImpl::Bi> {
-}
-class SimpleCaseImpl2<Ai2 extends core::Object, Bi2 extends core::Object> extends core::Object implements self::SimpleCaseImpl<self::SimpleCaseImpl2::Ai2, self::SimpleCaseImpl2::Bi2> {
-  constructor •() → void
-    : super core::Object::•()
-    ;
-}
-abstract class Base<M extends core::Object> extends core::Object {
-  constructor •() → void
-    : super core::Object::•()
-    ;
-}
-abstract class Mixin<M extends core::Object> extends core::Object {
-}
-class Mix<M extends core::Object> extends self::Base<self::Mix::M> implements self::Mixin<self::Mix::M> {
-  constructor •() → void
-    : super self::Base::•()
-    ;
-}
-static method main() → dynamic {
-  core::print(new self::Bar::•<core::String, core::double>(4).{self::FooBase::x});
-  new self::SimpleCaseImpl2::•<core::int, core::double>();
-  new self::Mix::•<core::double>();
-}