We lose the "clip path is a rounded rect" optimization with DOM Rendering in the GPU process.
<rdar://problem/109695331>
Created attachment 466458 [details] Perf test
Pull request: https://github.com/WebKit/WebKit/pull/14227
Committed 264419@main (57ed72ad03ad): <https://commits.webkit.org/264419@main> Reviewed commits have been landed. Closing PR #14227 and removing active labels.