Deal with the drawing area potentially being null in WebFrameLoaderClient::transitionToCommittedForNewPage(), as a result of calling WebPage::tearDownDrawingAreaForSuspend().
<rdar://problem/44844561>
Created attachment 351099 [details] Patch
Comment on attachment 351099 [details] Patch Clearing flags on attachment: 351099 Committed r236641: <https://trac.webkit.org/changeset/236641>
All reviewed patches have been landed. Closing bug.