Use metadata annotation @patch for patch classes

runtime/bin/socket_patch.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.
 
-patch class RawServerSocket {
-  /* patch */ static Future<RawServerSocket> bind(address,
+@patch class RawServerSocket {
+  /* @patch */ static Future<RawServerSocket> bind(address,
                                                   int port,
                                                   {int backlog: 0,
                                                    bool v6Only: false,
                                                    bool shared: false}) {
     return _RawServerSocket.bind(address, port, backlog, v6Only, shared);
   }
 }
 
 
-patch class RawSocket {
-  /* patch */ static Future<RawSocket> connect(
+@patch class RawSocket {
+  /* @patch */ static Future<RawSocket> connect(
       host, int port, {sourceAddress}) {
     return _RawSocket.connect(host, port, sourceAddress);
   }
 }
 
 
-patch class InternetAddress {
-  /* patch */ static InternetAddress get LOOPBACK_IP_V4 {
+@patch class InternetAddress {
+  /* @patch */ static InternetAddress get LOOPBACK_IP_V4 {
     return _InternetAddress.LOOPBACK_IP_V4;
   }
 
-  /* patch */ static InternetAddress get LOOPBACK_IP_V6 {
+  /* @patch */ static InternetAddress get LOOPBACK_IP_V6 {
     return _InternetAddress.LOOPBACK_IP_V6;
   }
 
-  /* patch */ static InternetAddress get ANY_IP_V4 {
+  /* @patch */ static InternetAddress get ANY_IP_V4 {
     return _InternetAddress.ANY_IP_V4;
   }
 
-  /* patch */ static InternetAddress get ANY_IP_V6 {
+  /* @patch */ static InternetAddress get ANY_IP_V6 {
     return _InternetAddress.ANY_IP_V6;
   }
 
-  /* patch */ factory InternetAddress(String address) {
+  /* @patch */ factory InternetAddress(String address) {
     return new _InternetAddress.parse(address);
   }
 
-  /* patch */ static Future<List<InternetAddress>> lookup(
+  /* @patch */ static Future<List<InternetAddress>> lookup(
       String host, {InternetAddressType type: InternetAddressType.ANY}) {
     return _NativeSocket.lookup(host, type: type);
   }
 
-  /* patch */ static InternetAddress _cloneWithNewHost(
+  /* @patch */ static InternetAddress _cloneWithNewHost(
       InternetAddress address, String host) {
     return (address as _InternetAddress)._cloneWithNewHost(host);
   }
 }
 
-patch class NetworkInterface {
-  /* patch */ static bool get listSupported {
+@patch class NetworkInterface {
+  /* @patch */ static bool get listSupported {
     return _listSupported();
   }
 
-  /* patch */ static Future<List<NetworkInterface>> list({
+  /* @patch */ static Future<List<NetworkInterface>> list({
       bool includeLoopback: false,
       bool includeLinkLocal: false,
       InternetAddressType type: InternetAddressType.ANY}) {
     return _NativeSocket.listInterfaces(includeLoopback: includeLoopback,
                                         includeLinkLocal: includeLinkLocal,
                                         type: type);
   }
 
   static bool _listSupported() native "NetworkInterface_ListSupported";
 }
@@ skipping 1281 matching lines @@
       _resume();
     } else {
       _socket.close();
     }
   }
 
   void set _owner(owner) { _socket.owner = owner; }
 }
 
 
-patch class ServerSocket {
-  /* patch */ static Future<ServerSocket> bind(address,
+@patch class ServerSocket {
+  /* @patch */ static Future<ServerSocket> bind(address,
                                                int port,
                                                {int backlog: 0,
                                                 bool v6Only: false,
                                                 bool shared: false}) {
     return _ServerSocket.bind(address, port, backlog, v6Only, shared);
   }
 }
 
 
 class _ServerSocket extends Stream<Socket>
@@ skipping 25 matching lines @@
   int get port => _socket.port;
 
   InternetAddress get address => _socket.address;
 
   Future close() => _socket.close().then((_) => this);
 
   void set _owner(owner) { _socket._owner = owner; }
 }
 
 
-patch class Socket {
-  /* patch */ static Future<Socket> connect(host, int port, {sourceAddress}) {
+@patch class Socket {
+  /* @patch */ static Future<Socket> connect(host, int port, {sourceAddress}) {
     return RawSocket.connect(host, port, sourceAddress: sourceAddress).then(
         (socket) => new _Socket(socket));
   }
 }
 
 
 class _SocketStreamConsumer extends StreamConsumer<List<int>> {
   StreamSubscription subscription;
   final _Socket socket;
   int offset;
@@ skipping 291 matching lines @@
         _raw.shutdown(SocketDirection.SEND);
         _disableWriteEvent();
       }
     }
   }
 
   void set _owner(owner) { _raw._owner = owner; }
 }
 
 
-patch class RawDatagramSocket {
-  /* patch */ static Future<RawDatagramSocket> bind(
+@patch class RawDatagramSocket {
+  /* @patch */ static Future<RawDatagramSocket> bind(
       host, int port, {bool reuseAddress: true}) {
     return _RawDatagramSocket.bind(host, port, reuseAddress);
   }
 }
 
 class _RawDatagramSocket extends Stream implements RawDatagramSocket {
   _NativeSocket _socket;
   StreamController<RawSocketEvent> _controller;
   bool _readEventsEnabled = true;
   bool _writeEventsEnabled = true;
@@ skipping 129 matching lines @@
 Datagram _makeDatagram(List<int> data,
                        String address,
                        List<int> in_addr,
                        int port) {
   return new Datagram(
       data,
       new _InternetAddress(address, null, in_addr),
       port);
 }