Reapply "Rename mappedBy to map."

pkg/intl/test/date_time_format_http_request_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // or details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Test date formatting and parsing using locale data read via an http request
  * to a server.
  */
 
 library date_time_format_http_request_test;
@@ skipping 12 matching lines @@
   useHtmlConfiguration();
   url = "http://localhost:${window.location.port}/pkg/intl/lib/src/data/dates/";
   // Initialize one locale just so we know what the list is.
   test('Run everything', () {
     initializeDateFormatting("en_US", url).then(expectAsync1(runEverything));});
 }
 
 void runEverything(_) {
   // Initialize all locales and wait for them to finish before running tests.
   var futures = DateFormat.allLocalesWithSymbols()
-      .mappedBy((locale) => initializeDateFormatting(locale, url))
+      .map((locale) => initializeDateFormatting(locale, url))
       .toList();
   Future.wait(futures).then(expectAsync1((_) {
       runDateTests(smallSetOfLocales());
     }));
 }