There is no need to re-sort the whole array of iterations just to move a single one. The algorithm gets slow enough to sometimes freeze WebContent for several seconds. rdar://problem/26096900
Created attachment 285255 [details] proposed fix
Comment on attachment 285255 [details] proposed fix Clearing flags on attachment: 285255 Committed r204139: <http://trac.webkit.org/changeset/204139>
All reviewed patches have been landed. Closing bug.