Migrating another batch of tests to dart 2.

tests/language_2/comparison_test.dart

 // Copyright (c) 2011, 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.
 // Dart test program for testing comparison operators.
 
 import "package:expect/expect.dart";
 
 class Helper {
   static bool STRICT_EQ(a, b) {
     return identical(a, b);
@@ skipping 305 matching lines @@
     Expect.isFalse(Helper.EQ(null, 1.1));
 
     // TODO(srdjan): Clarify behaviour of greater/less comparisons
     // between numbers and non-numbers.
   }
 }
 
 main() {
   ComparisonTest.testMain();
 }