Add new language test for generic function parameter (filed issue #27299).

tests/language/generic_methods_generic_function_parameter_test.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 file.
+//
+// DartOptions=--generic-method-syntax
+// VMOptions=--generic-method-syntax
 
 import "package:expect/expect.dart";
 
-class A<T> {}
-
 class C<T> {
-  map() {
-    return () => <T, T>{};
-  }
+  bar<V>(T t, int u, V v) => t + u + v;
+  foo<U>(bar<V>(T t, U u, V v)) => bar<int>(1, 2, 3);
 }
 
 main() {
-  Expect.isTrue(new C<int>().map()() is Map<int, int>);
-  Expect.isFalse(new C<int>().map()() is Map<String, int>);
-  Expect.isFalse(new C<int>().map()() is Map<int, String>);
+  var c = new C<int>();
+  Expect.equals(6, c.foo<int>(c.bar));
 }