Continued work towards complying with https://github.com/WebKit/WebKit/wiki/Smart-Pointer-Usage-Guidelines.
<rdar://problem/113042000>
Created attachment 467149 [details] Patch
Committed 266406@main (5b4bb30a99e4): <https://commits.webkit.org/266406@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 467149 [details].