Merge kernel closure conversion into the Dart SDK

pkg/kernel/testcases/closures/static_tear_off.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.
+
+f_1_1_no_default(a, [b]) => a + b;
+
+f_1_1_default(a, [b = 2]) => a + b;
+
+f_1_b_no_default(a, {b}) => a + b;
+
+f_1_b_default(a, {b: 2}) => a + b;
+
+test_1_1(Function f, bool hasDefault) {
+  var result = f(40, 2);
+  if (42 != result) throw "Unexpected result: $result";
+  test_1(f, hasDefault);
+}
+
+test_1_b(Function f, bool hasDefault) {
+  var result = f(40, b: 2);
+  if (42 != result) throw "Unexpected result: $result";
+  test_1(f, hasDefault);
+}
+
+test_1(Function f, bool hasDefault) {
+  var result = 0;
+  bool threw = true;
+  try {
+    result = f(40);
+    threw = false;
+  } catch (_) {
+    // Ignored.
+  }
+  if (hasDefault) {
+    if (threw) throw "Unexpected exception.";
+    if (42 != result) throw "Unexpected result: $result.";
+  } else {
+    if (!threw) throw "Expected exception missing.";
+    if (0 != result) throw "Unexpected result: $result.";
+  }
+}
+
+main(arguments) {
+  test_1_1(f_1_1_no_default, false);
+  test_1_1(f_1_1_default, true);
+  test_1_b(f_1_b_no_default, false);
+  test_1_b(f_1_b_default, true);
+}