A general purpose script injection class for injecting a script directly or adding a reference to a script by URL to the DOM Previously reviewed as http://gwt-code-reviews.appspot.com/1451818 Updated tests to skip fail callback test on Safari 3 Review by: unnurg git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10407 8db76d5a-ed1c-0410-87a9-c151d255dfc7