This issue tracks replacing the hardcoded NSControlSizeRegular reference in ScrollerMac with one derived from ScrollbarWidth value. This doesn't track getting that ScrollbarWidth value from the styles that will be addressed in a follow up.
Pull request: https://github.com/WebKit/WebKit/pull/15475
Committed 265691@main (78b4149d570a): <https://commits.webkit.org/265691@main> Reviewed commits have been landed. Closing PR #15475 and removing active labels.
<rdar://problem/111625470>