The patch set https://gerrit.wikimedia.org/r/#/c/409342/ was not able to rebase through gerrit interface (Shows message that there are conflicts).
Using git command was working. The conflicts was with renamed classes from https://gerrit.wikimedia.org/r/#/c/409235/
Gerrit should rebase with following renames and allows such rebase like done on the command line.
At the moment there are many renames of files. With this feature it would be easier to keep as many as possible patch set mergable without many manual work.