Compare to:
This interface allows checking whether getting capability prefs is allowed.
[uuid(c73c9a05-92ce-46e1-8f69-90a2a3a36104)]
interface nsIPrefSecurityCheck : nsISupports
Methods
Checks whether the currently executing script (if any) can access security preferences. Corresponds to CapabilityPreferencesAccess. Exceptions from this method should be treated like a return value of false.
boolean
canAccessSecurityPreferences()