Move m_exposedContentRect into the DelegatedScrollingGeometry optional
Created attachment 385940 [details] Patch
Created attachment 385942 [details] Patch
Comment on attachment 385942 [details] Patch Clearing flags on attachment: 385942 Committed r253689: <https://trac.webkit.org/changeset/253689>
All reviewed patches have been landed. Closing bug.
<rdar://problem/58044593>