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 52f322a78aa063e5a72771b0e0a8b89c9ff5ff27..8de4b9a20b5fd250634b6a8f99b114dbe670e87f 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -7,6 +7,10 @@ async/slow_consumer_test: Skip # Issue 8647
 [ $compiler == dart2js ]
 math/*: Skip
 mirrors/*: Skip
+async/run_async3_test: Fail # _enqueueImmediate runs after Timer. http://dartbug.com/9002
+
+[ $compiler == dart2js && ($runtime == d8 || $jscl) ]
+async/run_async4_test: Fail # no global exception handler in isolates. http://dartbug.com/9012
 
 [ $compiler == dart2js && $checked ]
 async/stream_event_transform_test: Fail # Issue 7733.
@@ -39,6 +43,10 @@ crypto/hmac_md5_test: Fail, Pass
 [ $runtime == vm && $arch == x64 ]
 async/slow_consumer2_test: Fail # Issue 7726
 
+[ $runtime == vm ]
+async/run_async3_test: Fail # _enqueueImmediate runs after Timer. http://dartbug.com/9001.
+
+
 [ $compiler == none && $runtime == drt ]
 async/deferred/deferred_api_test: Fail # http://dartbug.com/2264