Runtime flag for link prefetch and remove link subresource.
Created attachment 335501 [details] Patch
Created attachment 335502 [details] Patch
Comment on attachment 335502 [details] Patch Thanks for reviewing!
Comment on attachment 335502 [details] Patch Clearing flags on attachment: 335502 Committed r229563: <https://trac.webkit.org/changeset/229563>
All reviewed patches have been landed. Closing bug.
<rdar://problem/38397895>