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

tests/standalone/io/http_date_test.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.
 
 #import("dart:math");
 
 #source("../../../runtime/bin/input_stream.dart");
 #source("../../../runtime/bin/output_stream.dart");
 #source("../../../runtime/bin/chunked_stream.dart");
 #source("../../../runtime/bin/string_stream.dart");
 #source("../../../runtime/bin/stream_util.dart");
 #source("../../../runtime/bin/http.dart");
 #source("../../../runtime/bin/http_impl.dart");
 #source("../../../runtime/bin/http_parser.dart");
 #source("../../../runtime/bin/http_utils.dart");
 
 void testParseHttpDate() {
   Date date;
-  date = new Date(1999, Date.JUN, 11, 18, 46, 53, 0, isUtc: true);
+  date = new Date.utc(1999, Date.JUN, 11, 18, 46, 53, 0);
   Expect.equals(date, _HttpUtils.parseDate("Fri, 11 Jun 1999 18:46:53 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Friday, 11-Jun-1999 18:46:53 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Fri Jun 11 18:46:53 1999"));
 
-  date = new Date(1970, Date.JAN, 1, 0, 0, 0, 0, isUtc: true);
+  date = new Date.utc(1970, Date.JAN, 1, 0, 0, 0, 0);
   Expect.equals(date, _HttpUtils.parseDate("Thu, 1 Jan 1970 00:00:00 GMT"));
   Expect.equals(date,
                 _HttpUtils.parseDate("Thursday, 1-Jan-1970 00:00:00 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Thu Jan  1 00:00:00 1970"));
 
-  date = new Date(2012, Date.MAR, 5, 23, 59, 59, 0, isUtc: true);
+  date = new Date.utc(2012, Date.MAR, 5, 23, 59, 59, 0);
   Expect.equals(date, _HttpUtils.parseDate("Mon, 5 Mar 2012 23:59:59 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Monday, 5-Mar-2012 23:59:59 GMT"));
   Expect.equals(date, _HttpUtils.parseDate("Mon Mar  5 23:59:59 2012"));
 }
 
 void testFormatParseHttpDate() {
   test(int year,
        int month,
        int day,
        int hours,
        int minutes,
        int seconds,
        String expectedFormatted) {
     Date date;
     String formatted;
-    date = new Date(year, month, day, hours, minutes, seconds, 0, isUtc: true);
+    date = new Date.utc(year, month, day, hours, minutes, seconds, 0);
     formatted = _HttpUtils.formatDate(date);
     Expect.equals(expectedFormatted, formatted);
     Expect.equals(date, _HttpUtils.parseDate(formatted));
   }
 
   test(1999, Date.JUN, 11, 18, 46, 53, "Fri, 11 Jun 1999 18:46:53 GMT");
   test(1970, Date.JAN, 1, 0, 0, 0, "Thu, 1 Jan 1970 00:00:00 GMT");
   test(2012, Date.MAR, 5, 23, 59, 59, "Mon, 5 Mar 2012 23:59:59 GMT");
 }
 
@@ skipping 31 matching lines @@
 void testParseHttpCookieDate() {
   Expect.throws(() => _HttpUtils.parseCookieDate(""));
 
   test(int year,
        int month,
        int day,
        int hours,
        int minutes,
        int seconds,
        String formatted) {
-    Date date = new Date(
-        year, month, day, hours, minutes, seconds, 0, isUtc: true);
+    Date date = new Date.utc(year, month, day, hours, minutes, seconds, 0);
     Expect.equals(date, _HttpUtils.parseCookieDate(formatted));
   }
 
   test(2012, Date.JUN, 19, 14, 15, 01, "tue, 19-jun-12 14:15:01 gmt");
   test(2021, Date.JUN, 09, 10, 18, 14, "Wed, 09-Jun-2021 10:18:14 GMT");
   test(2021, Date.JAN, 13, 22, 23, 01, "Wed, 13-Jan-2021 22:23:01 GMT");
   test(2013, Date.JAN, 15, 21, 47, 38, "Tue, 15-Jan-2013 21:47:38 GMT");
   test(1970, Date.JAN, 01, 00, 00, 01, "Thu, 01-Jan-1970 00:00:01 GMT");
 }
 
 void main() {
   testParseHttpDate();
   testFormatParseHttpDate();
   testParseHttpDateFailures();
   testParseHttpCookieDate();
 }