Update Timer API to take the callback as the last parameter.

runtime/bin/http_impl.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.
 
 // Utility class for encoding a string into UTF-8 byte stream.
 class _UTF8Encoder {
   static List<int> encodeString(String string) {
     int size = _encodingSize(string);
     ByteArray result = new ByteArray(size);
     _encodeString(string, result);
@@ skipping 1044 matching lines @@
         _connectionOpened(socketConn, connection);
       };
       socket.onError = () {
         if (_onError !== null) {
           _onError(HttpStatus.NETWORK_CONNECT_TIMEOUT_ERROR);
         }
       };
     } else {
       _SocketConnection socketConn = socketConnections.removeFirst();
       _activeSockets.add(socketConn);
-      new Timer((ignored) => _connectionOpened(socketConn, connection), 0);
+      new Timer(0, (ignored) => _connectionOpened(socketConn, connection));
 
       // Get rid of eviction timer if there are no more active connections.
       if (socketConnections.isEmpty()) {
         _evictionTimer.cancel();
         _evictionTimer = null;
       }
     }
 
     return connection;
   }
@@ skipping 26 matching lines @@
                 _SocketConnection socketConn = connections.last();
                 if (socketConn._idleTime(now).inMilliseconds >
                     DEFAULT_EVICTION_TIMEOUT) {
                   connections.removeLast();
                 } else {
                   break;
                 }
               }
             });
       }
-      _evictionTimer = new Timer.repeating(_handleEviction, 10000);
+      _evictionTimer = new Timer.repeating(10000, _handleEviction);
     }
 
     // Return connection.
     _activeSockets.remove(socketConn);
     sockets.addFirst(socketConn);
     socketConn._markReturned();
   }
 
   void set onError(void callback(int status)) {
     _onError = callback;
   }
 
   Function _onOpen;
   Function _onError;
   Map<String, Queue<_SocketConnection>> _openSockets;
   Set<_SocketConnection> _activeSockets;
   Timer _evictionTimer;
   bool _shutdown;  // Has this HTTP client been shutdown?
 }