[WK1][WK2][Mac] Fullscreen animation is incorrect when page is scaled.
Created attachment 247602 [details] Patch
Created attachment 247607 [details] Patch for landing
mac-wk2 EWS is showing a test failure: fast/css/object-fit/object-fit-canvas.html, but it's showing the same failure on all the EWS runs, so it's not added by this patch.
Comment on attachment 247607 [details] Patch for landing Clearing flags on attachment: 247607 Committed r180885: <http://trac.webkit.org/changeset/180885>