Revert 240926 "Fix LibjingleTransportFactory to refresh STUN/Relay."

> Fix LibjingleTransportFactory to refresh STUN/Relay.
> 
> Previously chromoting host would get relay info only when started. Relay
> token expires within several hours, which means relay session creation would
> always fail from the host running for longer than several hours, and that
> makes connection impossible in some configurations. Moved code that
> gets Jingle info to LibjingleTransportFactory and it's responsible for
> refreshing relay token every hour.
> 
> BUG=318897
> R=rmsousa@chromium.org
> 
> Review URL: https://codereview.chromium.org/98173006

TBR=sergeyu@chromium.org

Review URL: https://codereview.chromium.org/116123003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240936 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240936