Invalidate all existing spellcheck requests when losing focus. This includes clearing the queue as well as cancelling any currently executed requests.
Created attachment 198602 [details] Patch
Comment on attachment 198602 [details] Patch LGTM.
Comment on attachment 198602 [details] Patch Clearing flags on attachment: 198602 Committed r148635: <http://trac.webkit.org/changeset/148635>
All reviewed patches have been landed. Closing bug.