Get rid of a lot of () for getters.

lib/coreimpl/date.dart

 // Copyright (c) 2012, 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.
 
 class DateImplementation implements Date {
   final int millisecondsSinceEpoch;
   final bool isUtc;
 
   factory DateImplementation.fromString(String formattedString) {
     // Read in (a subset of) ISO 8601.
@@ skipping 153 matching lines @@
                                int day,
                                int hour,
                                int minute,
                                int second,
                                int millisecond,
                                bool isUtc]);
   external DateImplementation.now();
   external static int _brokenDownDateToMillisecondsSinceEpoch(
       int years, int month, int day, int hour, int minute, int second,
       int millisecond, bool isUtc);
-  external String get timeZoneName();
-  external Duration get timeZoneOffset();
-  external int get year();
-  external int get month();
-  external int get day();
-  external int get hour();
-  external int get minute();
-  external int get second();
-  external int get millisecond();
-  external int get weekday();
+  external String get timeZoneName;
+  external Duration get timeZoneOffset;
+  external int get year;
+  external int get month;
+  external int get day;
+  external int get hour;
+  external int get minute;
+  external int get second;
+  external int get millisecond;
+  external int get weekday;
 }