[e] (0) Clean up how we describe the 'delay the load event' logic for loading nested iframes
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23633
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@8287 340c8d12-0b0e-0410-8428-c7bf67bfef74