The recommended way to commit new files is described in Section 3.9, “Contribute your changes”. However, the following might be of interest for contributing developers as well.
These actions can only be performed by the Wireshark core developers who have write access to the Subversion repository. It is put in here to have all information in one place.
If you (as a core developer) need to add a file to the SVN repository, then you need to perform the following steps:
Add the new file(s) to the repository:
$ svn add new_file
Set the line ending property to native for the new file(s):
$ svn propset svn:eol-style native new_file
Set version keyword to Id for the new file(s):
$ svn propset svn:keywords Id new_file
Commit your changes, including the added file(s).
$ svn commit new_file other_files_you_modified
Don’t forget a brief description of the reason for the commit so other developers don’t need to read the diff in order to know what has changed.