Modify JS annotations in runtime typedef handling to not drag in native types.

R=floitsch@google.com

Review URL: https://codereview.chromium.org//558063002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@40085 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed