Because the new serializer in Bug 222145 has uncovered some subtle differences between CFURLRequest and NSURLRequest serialization, introduce a temporary serialization step to pick up a few things not in the CoreFoundation object.
Created attachment 421125 [details]
Created attachment 421126 [details]
Created attachment 421127 [details]
Created attachment 421129 [details]
Patch for landing
Committed r273216: <https://commits.webkit.org/r273216>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 421129 [details].