I've found something in the GVFS man page that states that it's for browsing windows file shares.
• gvfsd-smb-browse - browses Windows Shares Filesystem volumes
GVFS is the gnome virtual filesystem:
GIO provides a VFS API to GLib applications. It includes a 'local'
implementation using POSIX. gvfs provides implementations that go
beyond that and allow to access files and storage using many protocols,
such as ftp, http, sftp, dav, obexftp, etc. It also provides support
for trash folders, for cd burning and for monitoring interesting
devices and volumes on the computer.
There are several reports of bugs in GVFS which caused 100% cpu usage including this one which is currently open.