- Move VM specific helpers to the common dart:io patch file.

sdk/lib/io/timer_impl.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 // Timer heap implemented as a array-based binary heap[0].
 // This allows for O(1) `first`, O(log(n)) `remove`/`removeFirst` and O(log(n))
 // `add`.
 //
@@ skipping 393 matching lines @@
   // The Timer factory registered with the dart:async library by the embedder.
   static Timer _factory(int milliSeconds,
                         void callback(Timer timer),
                         bool repeating) {
     if (repeating) {
       return new _Timer.periodic(milliSeconds, callback);
     }
     return new _Timer(milliSeconds, callback);
   }
 }
-
-// Provide a closure which will allocate a Timer object to be able to hook
-// up the Timer interface in dart:isolate with the implementation here.
-_getTimerFactoryClosure() {
-  runTimerClosure = _Timer._handleTimeout;
-  return _Timer._factory;
-}