Minor changes to the dart:io library files.

runtime/bin/socket_impl.dart

Index: runtime/bin/socket_impl.dart
diff --git a/runtime/bin/socket_impl.dart b/runtime/bin/socket_impl.dart
index bf9ccf4cce069953fa75ded49a339cfe514a11bd..8017b547b40ca56222474ea2cd5a9030a2ff0825 100644
--- a/runtime/bin/socket_impl.dart
+++ b/runtime/bin/socket_impl.dart
@@ -38,7 +38,7 @@ class _SocketBase {
     _handlerMask = 0;
     _canActivateHandlers = true;
     _id = -1;
-    EventHandler._start();
+    _EventHandler._start();
   }
 
   // Multiplexes socket events to the socket handlers.
@@ -163,7 +163,7 @@ class _SocketBase {
       _handler = new ReceivePort();
       _handler.receive((var message, ignored) { _multiplex(message); });
     }
-    EventHandler._sendData(_id, _handler, data);
+    _EventHandler._sendData(_id, _handler, data);
   }
 
   abstract bool _isListenSocket();