Native undo/redo does not work because we modify DOM structure (highlights, chunks and etc.)
Implement it via keyboard shortcuts for now (Cmd/Ctrl+Z and Cmd/Ctrl+Shift+Z).
FIXME: Do something with the popup's Undo and Redo menu options - they invoke native's undo/redo.
Created attachment 89356 [details]
Comment on attachment 89356 [details]
Clearing flags on attachment: 89356
Committed r83725: <http://trac.webkit.org/changeset/83725>
All reviewed patches have been landed. Closing bug.