willBeRemovedFromTree is called conditionally, relying on unregistering objects in there is highly error prone.
Created attachment 322560 [details]
The commit-queue encountered the following flaky tests while processing attachment 322560 [details]:
The commit-queue is continuing to process your patch.
Comment on attachment 322560 [details]
Clearing flags on attachment: 322560
Committed r222823: <http://trac.webkit.org/changeset/222823>
All reviewed patches have been landed. Closing bug.