Nothing in this article shall be deemed to:
(a) Require the extension of any benefits to a peace officer who at the time of his injury, death, or disability is acting for compensation from one other than the city, county or city and county of his primary employment.
(b) Require the extension of any benefits to a peace officer employed by a city, county, or city and county which by charter, ordinance, or departmental regulation expressly prohibits the activity giving rise to the injury, disability or death, whether now in force or hereafter enacted or promulgated.
(c) Enlarge or extend the authority of any peace officer to make an arrest; provided, however, that illegality of the arrest shall not affect the extension of benefits by reason of this act if the peace officer reasonably believed that the arrest was not illegal.
(Added by Stats. 1959, Ch. 395.)