Start UIBase with 0 width and 0 height as well.
Start UIBase with 0 width and 0 height as well.

git-svn-id: 00225d326fbeb9978ee2ea3564602c0fe18eb5d2@1441622 13f79535-47bb-0310-9956-ffa450edef68

greg-dove/flex-asjs,greg-dove/flex-asjs,greg-dove/flex-asjs,greg-dove/flex-asjs