Fix annotations in async_and_or_test.dart.

tests/language/async_and_or_test.dart

 // Copyright (c) 2015, 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.
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 
-@NoInline
-@AssumeDynamic
+@NoInline()
+@AssumeDynamic()
 confuse(x) {
   return x;
 }
 
 test1() async {
   Expect.isFalse(await confuse(false) && await confuse(false));
   Expect.isFalse(await confuse(false) && await confuse(true));
   Expect.isFalse(await confuse(true) && await confuse(false));
   Expect.isTrue(await confuse(true) && await confuse(true));
 
@@ skipping 60 matching lines @@
 
 test() async {
   await test1();
   await test2();
 }
 
 main() {
   asyncStart();
   test().then((_) => asyncEnd());
 }