Rename blahHandler to onBlah throughout dart:io.

tests/standalone/src/ProcessStdIOScript.dart

Index: tests/standalone/src/ProcessStdIOScript.dart
diff --git a/tests/standalone/src/ProcessStdIOScript.dart b/tests/standalone/src/ProcessStdIOScript.dart
index a3f988b987246d1a1d3ddc88a1e89df898bb417a..2113ac766cd1b1c8e66c87e6b98274ae50fd434a 100644
--- a/tests/standalone/src/ProcessStdIOScript.dart
+++ b/tests/standalone/src/ProcessStdIOScript.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.
 //
@@ -10,11 +10,11 @@ main() {
   var options = new Options();
   if (options.arguments.length > 0) {
     if (options.arguments[0] == "0") {
-      stdin.dataHandler = () => stdout.write(stdin.read());
+      stdin.onData = () => stdout.write(stdin.read());
     } else if (options.arguments[0] == "1") {
-      stdin.dataHandler = () => stderr.write(stdin.read());
+      stdin.onData = () => stderr.write(stdin.read());
     } else if (options.arguments[0] == "2") {
-      stdin.dataHandler = () {
+      stdin.onData = () {
         var data = stdin.read();
         stdout.write(data);
         stderr.write(data);