Remove deprecated ms arguments for Timer and Future.

runtime/bin/process_patch.dart

Index: runtime/bin/process_patch.dart
diff --git a/runtime/bin/process_patch.dart b/runtime/bin/process_patch.dart
index 72761c35e711462b5e387167ffaa121017b600bd..dd43b104245131088aa330883cfc685f5ba37194 100644
--- a/runtime/bin/process_patch.dart
+++ b/runtime/bin/process_patch.dart
@@ -156,7 +156,7 @@ class _ProcessImpl extends NativeFieldWrapperClass1 implements Process {
     var completer = new Completer();
     // TODO(ager): Make the actual process starting really async instead of
     // simulating it with a timer.
-    new Timer(0, (_) {
+    Timer.run(() {
       var status = new _ProcessStartStatus();
       bool success = _startNative(_path,
                                   _arguments,