WordPress at a glance
filter is not described

privacy_policy_url filter-hook . WP 4.9.6

Filters the URL of the privacy policy page.

Usage

add_filter( 'privacy_policy_url', 'filter_function_name_9856', 10, 2 );
function filter_function_name_9856( $url, $policy_page_id ){
	// filter...

	return $url;
}
$url(string)
The URL to the privacy policy page. Empty string if it doesn't exist.
$policy_page_id(int)
The ID of privacy policy page.

Where the hook is called

get_privacy_policy_url()
privacy_policy_url
wp-includes/link-template.php 4132
return apply_filters( 'privacy_policy_url', $url, $policy_page_id );

Where the hook is used (in WP core)

Does not used.