Update process_exit_negative_test to latest API.

tests/standalone/io/process_exit_negative_test.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.
 //
 // Process test program to test that compilation errors in the process
 // exit handler are reported correctly.
 
 import "dart:io";
 import "process_test_util.dart";
 
 void main() {
-  Future<Process> fp = Process.start(getProcessTestFileName(),
-                            const ["0", "0", "0", "0"]);
+  var fp = Process.start(getProcessTestFileName(),

[ricow1, 2013/05/22 08:11:18]

why change that?

[Anders Johnsen, 2013/05/22 08:14:06]

So we don't have to pull in dart:async. (for Future type).

+                         const ["0", "0", "0", "0"]);
   fp.then((p) {
-    p.onExit = (int s) {
+    p.exitCode.then((int s) {
       print(a.toString());  // Should cause a compilation error here.
-    };
+    });
     // Drain stdout and stderr.
-    p.stdout.onData = p.stdout.read;
-    p.stderr.onData = p.stderr.read;
+    p.stdout.listen((_) {});
+    p.stderr.listen((_) {});
   });
 }