74694f5a90
After requesting the interrupt, send a null message to the isolate to ensure the isolate runs and detects the interrupt request immediately. Fixes issue 21047. R=iposva@google.com Review URL: https://codereview.chromium.org//789243003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@42577 260f80e4-7a28-3924-810f-c04153c831b5