Rename blahHandler to onBlah throughout dart:io.

tests/standalone/src/TestingServer.dart

Index: tests/standalone/src/TestingServer.dart
diff --git a/tests/standalone/src/TestingServer.dart b/tests/standalone/src/TestingServer.dart
index caa0b0d05a7232303182681f29de62f6ba3d80cd..643da7ef922553b0f44b1ee3d8a2634b06255412 100644
--- a/tests/standalone/src/TestingServer.dart
+++ b/tests/standalone/src/TestingServer.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
@@ -19,8 +19,8 @@ class TestingServer extends Isolate {
       if (message == INIT) {
         _server = new ServerSocket(HOST, 0, 10);
         Expect.equals(true, _server !== null);
-        _server.connectionHandler = connectionHandler;
-        _server.errorHandler = errorHandlerServer;
+        _server.onConnection = connectionHandler;
+        _server.onError = errorHandlerServer;
         replyTo.send(_server.port, null);
       } else if (message == SHUTDOWN) {
         _server.close();