Rename Timer.repeating to Timer.periodic.

tests/standalone/io/http_connection_close_test.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.
 //
 
 import "dart:async";
 import "dart:io";
 import "dart:uri";
 
 void testHttp10Close(bool closeRequest) {
@@ skipping 33 matching lines @@
             server.close();
           });
         if (closeRequest) socket.close();
       });
   });
 }
 
 void testStreamResponse() {
   HttpServer.bind().then((server) {
     server.listen((request) {
-      var timer = new Timer.repeating(const Duration(milliseconds: 0), (_) {
+      var timer = new Timer.periodic(const Duration(milliseconds: 0), (_) {
         request.response.write(
             'data:${new DateTime.now().millisecondsSinceEpoch}\n\n');
       });
       request.response.done
           .whenComplete(() {
             timer.cancel();
           })
           .catchError((_) {});
     });
 
@@ skipping 16 matching lines @@
   });
 }
 
 main() {
   testHttp10Close(false);
   testHttp10Close(true);
   testHttp11Close(false);
   testHttp11Close(true);
   testStreamResponse();
 }