Revert "Mac no longer fire bogus events. Fix Mac watcher."

BUG=

Review URL: https://codereview.chromium.org//670653003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/watcher@41221 260f80e4-7a28-3924-810f-c04153c831b5
3 files changed
tree: a383cfee843278299fb682f4aa145e6279fb9a4f
  1. pkgs/