Attempt to fix build.

pkg/intl/lib/extract_messages.dart

 // Copyright (c) 2013, 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.
 
 /**
  * This is for use in extracting messages from a Dart program
  * using the Intl.message() mechanism and writing them to a file for
  * translation. This provides only the stub of a mechanism, because it
  * doesn't define how the file should be written. It provides an
  * [IntlMessage] class that holds the extracted data and [parseString]
@@ skipping 199 matching lines @@
    * Create a MainMessage from [node] using the name and
    * parameters of the last function/method declaration we encountered,
    * and the values we get by calling [extract]. We set those values
    * by calling [setAttribute]. This is the common parts between
    * [messageFromIntlMessageCall] and [messageFromDirectPluralOrGenderCall].
    */
   MainMessage _messageFromNode(MethodInvocation node, Function extract,
       Function setAttribute) {
     var message = new MainMessage();
     message.name = name;
-    message.arguments = parameters.parameters.elements.map(
+    message.arguments = parameters.parameters.map(
         (x) => x.identifier.name).toList();
-    var arguments = node.argumentList.arguments.elements;
+    var arguments = node.argumentList.arguments;
     extract(message, arguments);
 
     for (var namedArgument in arguments.where((x) => x is NamedExpression)) {
       var name = namedArgument.name.label.name;
       var exp = namedArgument.expression;
       var string = exp is SimpleStringLiteral ? exp.value : exp.toString();
       setAttribute(message, name, string);
     }
     return message;
   }
@@ skipping 206 matching lines @@
       } on IntlMessageExtractionException catch (e) {
         message = null;
         var err = new StringBuffer();
         err.write("Error $e");
         err.write("Processing <$node>");
         err.write(_reportErrorLocation(node));
         print(err);
         warnings.add(err);
       }
     });
-    var mainArg = node.argumentList.arguments.elements.firstWhere(
+    var mainArg = node.argumentList.arguments.firstWhere(
         (each) => each is! NamedExpression);
     if (mainArg is SimpleStringLiteral) {
       message.mainArgument = mainArg.toString();
     } else {
       message.mainArgument = mainArg.name;
     }
     return message;
   }
 }
 
 /**
  * Exception thrown when we cannot process a message properly.
  */
 class IntlMessageExtractionException implements Exception {
   /**
    * A message describing the error.
    */
   final String message;
 
   /**
    * Creates a new exception with an optional error [message].
    */
   const IntlMessageExtractionException([this.message = ""]);
 
   String toString() => "IntlMessageExtractionException: $message";
 }