Add first version of runAsync.

tests/lib/lib.status

Index: tests/lib/lib.status
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index b3ca17a485f3f7517ccfdc78c6abf7790820590c..c530a65c689b5d2c1d2392468ecf5dfdf6a70503 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -7,6 +7,7 @@ async/slow_consumer_test: Skip # Issue 8647
 [ $compiler == dart2js ]
 math/*: Skip
 mirrors/*: Skip
+async/run_async3_test: Fail # _enqueueImmediate runs after Timer. TODO(floitsch): create bug number.
 
 [ $compiler == dart2js && $checked ]
 async/stream_event_transform_test: Fail # Issue 7733.
@@ -41,6 +42,11 @@ crypto/hmac_md5_test: Fail, Pass
 [ $runtime == vm && $arch == x64 ]
 async/slow_consumer2_test: Fail # Issue 7726
 
+[ $runtime == vm ]
+async/run_async2_test: Fail # _enqueueImmediate doesn't run in sequence. TODO(floitsch): create bug number.
+async/run_async3_test: Fail # _enqueueImmediate runs after Timer. TODO(floitsch): create bug number.
+
+
 [ $compiler == none && $runtime == drt ]
 async/deferred/deferred_api_test: Fail # http://dartbug.com/2264