[giow] (2) Fix the rules on what 'Origin' header to use when navigating to a resource in an <iframe>, <object>, <embed>, or <frame> element, so that the latter two are not forgotten.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23837
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@8307 340c8d12-0b0e-0410-8428-c7bf67bfef74
[e] (0) Try to clarify the term 'line segments' with a cross-reference.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23761
Affected topics: Canvas

git-svn-id: http://svn.whatwg.org/webapps@8308 340c8d12-0b0e-0410-8428-c7bf67bfef74