We should allow e.g. about:BLANK, about:blAnk and about:SRcDOC to be treated as about:blank and about:srcdoc when we check for security origin inheritance.
Created attachment 281570 [details] Patch
Comment on attachment 281570 [details] Patch Clearing flags on attachment: 281570 Committed r202174: <http://trac.webkit.org/changeset/202174>
All reviewed patches have been landed. Closing bug.