Reland "Merge more Kernel infrastructure from kernel_sdk SDK fork."

tests/kernel/unsorted/closures_regression_test.dart

Index: tests/kernel/unsorted/closures_regression_test.dart
diff --git a/tests/language/super_no_such_method2_test.dart b/tests/kernel/unsorted/closures_regression_test.dart
similarity index 52%
copy from tests/language/super_no_such_method2_test.dart
copy to tests/kernel/unsorted/closures_regression_test.dart
index cbd46216d66dafe494c47999b1ad7b637429b964..ac45e1bc4caf5dba4544555da463be3b0783577c 100644
--- a/tests/language/super_no_such_method2_test.dart
+++ b/tests/kernel/unsorted/closures_regression_test.dart
@@ -2,18 +2,21 @@
 // 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.
 
-import 'package:expect/expect.dart';
+import 'expect.dart';
 
+f(fun) => fun();
 class A {
-  noSuchMethod(im) => 42;
-}
-
-class B extends A {
-  noSuchMethod(im) => 87;
-
-  get foo => super.foo; /// 01: static type warning
+  identity(arg) {
+    return f(() {
+      print(this);
+      return f(() {
+        return this;
+      });
+    });
+  }
 }
 
 main() {
-  Expect.equals(42, new B().foo); /// 01: continued
-}
+  var a = new A();
+  Expect.isTrue(identical(a.identity(42), a));
+}