Rename blahHandler to onBlah throughout dart:io.

samples/total/server/DartCompiler.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.
 
 #library("total:dartcompiler");
 
 #import('dart:io');
 
 /**
  * A simple wrapper around the Dart compiler (runs frog).
@@ skipping 41 matching lines @@
     }
     if (checkOnly) {
       args.add('--check-only');
     }
    
 
     args.add(scriptName);
 
     Process compiler = new Process.start(_frogExecPath, args);
     StringBuffer messages = new StringBuffer();
-    compiler.exitHandler = (int status) {
+    compiler.onExit = (int status) {
       compiler.close();
       callback(status, messages.toString());
     };
 
-    compiler.stdout.dataHandler = () => _readAll(compiler.stdout, messages);
-    compiler.stderr.dataHandler = () => _readAll(compiler.stderr, messages);
+    compiler.stdout.onData = () => _readAll(compiler.stdout, messages);
+    compiler.stderr.onData = () => _readAll(compiler.stderr, messages);
   }
 }
 
 void _readAll(InputStream input, StringBuffer output) {
   while (input.available() != 0) {
     output.add(new String.fromCharCodes(input.read()));
   }
 }