Deprecate comparison operators of DateTime.

tests/corelib/date_time_test.dart

Index: tests/corelib/date_time_test.dart
diff --git a/tests/corelib/date_time_test.dart b/tests/corelib/date_time_test.dart
index cceaa1c2529fd8359a599334e934998963cbc2ad..61500657a0294ba700667b4154f2c32a1895fd47 100644
--- a/tests/corelib/date_time_test.dart
+++ b/tests/corelib/date_time_test.dart
@@ -317,13 +317,16 @@ class DateTest {
 
   static void testConstructors() {
     var dt0 = new DateTime.utc(2011, 5, 11, 18, 58, 35, 0);
+    var dt0b = new DateTime.utc(2011, 5, 11, 18, 58, 35, 0).toLocal();
     Expect.equals(1305140315000, dt0.millisecondsSinceEpoch);
     var dt1 = new DateTime.fromMillisecondsSinceEpoch(1305140315000);
     Expect.equals(dt1.millisecondsSinceEpoch, dt0.millisecondsSinceEpoch);
-    Expect.equals(true, dt1 == dt0);
+    Expect.equals(false, dt1 == dt0);
+    Expect.equals(true, dt1 == dt0b);
     var dt3 = new DateTime(dt1.year, dt1.month, dt1.day, dt1.hour, dt1.minute,
                        dt1.second, dt1.millisecond);
     Expect.equals(dt1.millisecondsSinceEpoch, dt3.millisecondsSinceEpoch);
+    Expect.equals(false, dt3 == dt0);
     Expect.equals(true, dt1 == dt3);
     dt3 = new DateTime(
         dt1.year, dt1.month, dt1.day, dt1.hour, dt1.minute,