The LayerRenderingResults doesn't need to maintain the hole punch rect, it's never used anyway. The hole punch rect is maintained in the LayerData. Internal tracking No. 272155
Created attachment 182895 [details] Patch
Comment on attachment 182895 [details] Patch Clearing flags on attachment: 182895 Committed r139828: <http://trac.webkit.org/changeset/139828>
All reviewed patches have been landed. Closing bug.