[ABE] XHR matches both TYPE_XMLHTTPREQUEST and TYPE_FETCH
[ABE] Updated INCLUSION types to match newest specific types from nsIContentType constants. OTHER still matches any type except "historically supported" ones (SCRIPT, CSS, IMAGE, OBJ, OBJSUB, MEDIA, FONT, SUBDOC, XBL, PING, XHR, DTD) for backward compatibility: please use UNKNOWN to match just TYPE_OTHER (i.e. request whose type is not specifically mapped yet by the nsIContentType API).
[e10s] Fixed INCLUSION type marked as OTHER for any request when Electrolysis is enabled (thanks barbaz for reporting)
[XSS] Fixed excessive recursion causing GC-related hangs on some ads-intensive websites (like der-postillion.de)