It is an internal detail.
Created attachment 442010 [details] Patch
Comment on attachment 442010 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=442010&action=review > Source/WebCore/style/StyleResolver.h:149 > + Get rid of those stray spaces.
Created attachment 442015 [details] Patch
> Get rid of those stray spaces. Did better and removed the unneeded friend too.
Committed r284604 (243333@main): <https://commits.webkit.org/243333@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 442015 [details].
<rdar://problem/84506807>