Merge https://chromium.googlesource.com/chromium/blink/+/c2c2ff9cb69f46f5cc9d289b2bfbdb8ab5bd3e49 The de-virtualization possibilities were noted whilst "FINALizing" the Node hierarchy. If a method is successfully marked FINAL but then fails when marked OVERRIDE as well, the method by definition does not need to be virtual.
Created attachment 201017 [details] Cleanup
Comment on attachment 201017 [details] Cleanup Clearing flags on attachment: 201017 Committed r149718: <http://trac.webkit.org/changeset/149718>
All reviewed patches have been landed. Closing bug.