Fixed UIObjectTest#testToString().  UIObject.toString() is equivalent to Element.getString(), not Element.toString().

Patch by: jlabanca
Review by: jgw (desk)



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5276 8db76d5a-ed1c-0410-87a9-c151d255dfc7