When the renderer that initiated the anonymous table rows is no longer in the render tree.
Created attachment 263135 [details] Patch
Comment on attachment 263135 [details] Patch r=me
I'll update the Win and iOS test results soon after they are available on the bots.
Comment on attachment 263135 [details] Patch Clearing flags on attachment: 263135 Committed r191119: <http://trac.webkit.org/changeset/191119>
All reviewed patches have been landed. Closing bug.