<rdar://97346409> We previously evicted fonts from the resource cache if they hadn't been used for 4 rendering updates. Many rendering updates don't contain any paint changes, so always count all fonts as 'unused'. This changes us to only count rendering updates that contain painting towards deciding if a font has been unused long enough to be evicted.
Pull request: https://github.com/WebKit/WebKit/pull/2723
Committed 252844@main (2da5f7dd5dd8): <https://commits.webkit.org/252844@main> Reviewed commits have been landed. Closing PR #2723 and removing active labels.