The average line count with a casual browsing session is ~1.4. 10 seems excessive (and neither PerformanceTests/Layout/line-layout-inline-block.html nor PerformanceTests/Layout/line-layout-inline-level-boxes.html show regression locally)
Created attachment 425422 [details] Patch
Committed r275620: <https://commits.webkit.org/r275620> All reviewed patches have been landed. Closing bug and clearing flags on attachment 425422 [details].
<rdar://problem/76360087>