Please review: JBS: https://bugs.openjdk.java.net/browse/JDK-8223378 Webrev: http://cr.openjdk.java.net/~hannesw/8223378/webrev.01/ API docs: http://cr.openjdk.java.net/~hannesw/8223378/api.01/
This implements the CSS Flexible Box Layout Module based page structure for the fixed header. I added a new PageContent builder class to simplify generation of the new layout structure across all the writer classes. In the process I also cleaned up some code a bit (getting rid of unused fields and parameters, removing obsolete javascript etc). Thanks, Hannes
