Remove .writeStream, .consume and rewrite IOSink to correctly implement a (sane) well-defined behav…

sdk/lib/async/timer.dart

Index: sdk/lib/async/timer.dart
diff --git a/sdk/lib/async/timer.dart b/sdk/lib/async/timer.dart
index 8a7fdb0a9e17807bab1cea3254457fea401c7b6a..b321e411a9cb46b61a7c5b5466698d44ff7482cd 100644
--- a/sdk/lib/async/timer.dart
+++ b/sdk/lib/async/timer.dart
@@ -46,7 +46,10 @@ abstract class Timer {
    * Runs the given [callback] asynchronously as soon as possible.
    */
   static void run(void callback()) {
-    schedule() {
+    // Optimizing a group of Timer.run callbacks to be executed in the
+    // same Timer callback.
+    _runCallbacks.add(callback);
+    if (_runCallbacks.length == 1) {
       new Timer(const Duration(milliseconds: 0), () {
         List runCallbacks = _runCallbacks;
         // Create new list to make sure we don't call newly added callbacks in
@@ -63,17 +66,11 @@ abstract class Timer {
             _runCallbacks.addAll(
                 runCallbacks.sublist(i));
             _runCallbacks.addAll(newCallbacks);
-            if (!_runCallbacks.isEmpty) schedule();
             throw;
           }
         }
       });
     }
-
-    // Optimizing a group of Timer.run callbacks to be executed in the
-    // same Timer callback.
-    _runCallbacks.add(callback);
-    if (_runCallbacks.length == 1) schedule();
   }
 
   /**