[WebIDL] Split DOM Parsing related functions out of Element and ShadowRoot and into their own IDL files to match specs
Created attachment 408653 [details] Patch
Created attachment 408655 [details] Patch
Created attachment 408671 [details] Patch
Committed r267011: <https://trac.webkit.org/changeset/267011> All reviewed patches have been landed. Closing bug and clearing flags on attachment 408671 [details].
<rdar://problem/68855671>