We need to add a formatter for each Document derived class in order for LLDB to pretty-print it. Otherwise, you have to manually drill down in Xcode- or cast- to Document* in order for LLDB to emit a pretty-printed summary.
Let's make things just work™ and add formatting for all the derived classes.
Created attachment 371519 [details]
Comment on attachment 371519 [details]
Clearing flags on attachment: 371519
Committed r246222: <https://trac.webkit.org/changeset/246222>
All reviewed patches have been landed. Closing bug.