Change core lib, dart2js, and more for new optional parameters syntax

samples/ui_lib/util/DateUtils.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.
 
 /**
  * General purpose date/time utilities.
  */
 class DateUtils {
   // TODO(jmesserly): localized strings
   static const WEEKDAYS = const ['Monday', 'Tuesday', 'Wednesday', 'Thursday',
@@ skipping 37 matching lines @@
 
     int hours = int.parse(timeParts[0]);
     int minutes = int.parse(timeParts[1]);
     int seconds = int.parse(timeParts[2]);
 
     // TODO(jmesserly): TimeZone is not implemented in Dartium. This ugly
     // hack applies the timezone from the string to the final time
     int zoneOffset = int.parse(parts[5]) ~/ 100;
 
     // Pretend it's a UTC time
-    Date result = new Date(
-        year, month, day, hours, minutes, seconds, 0, isUtc: true);
+    Date result = new Date.utc(year, month, day, hours, minutes, seconds, 0);
     // Shift it to the proper zone, but it's still a UTC time
     result = result.subtract(new Duration(hours: zoneOffset));
     // Then render it as a local time
     return result.toLocal();
   }
 
   /** Parse a string like: 2011-07-19T22:03:04.000Z */
   // TODO(jmesserly): workaround for Date.fromDate, which has issues:
   //   * on Dart VM it doesn't handle all of ISO 8601. See b/5055106.
   //   * on DartC it doesn't work on Safari. See b/5062557.
@@ skipping 107 matching lines @@
     }
     String twoDigits(int n) {
       if (n >= 10) return "${n}";
       return "0${n}";
     }
     String mm =
         twoDigits(duration.inMinutes.remainder(Duration.MINUTES_PER_HOUR));
     return "${hours}:${mm} ${a}";
   }
 }