Function cef_clear_scheme_handler_factories 

pub unsafe extern "C" fn cef_clear_scheme_handler_factories() -> c_int

Clear all scheme handler factories registered with the global request context. Returns false (0) on error. This function may be called on any thread in the browser process. Using this function is equivalent to calling cef_request_context_t::cef_request_context_get_global_context()->clear_schem e_handler_factories().