WordPress at a glance
filter is not described

secure_logged_in_cookie filter-hook . WP 3.1.0

Filters whether to use a secure cookie when logged-in.

Usage

add_filter( 'secure_logged_in_cookie', 'filter_function_name_1185', 10, 3 );
function filter_function_name_1185( $secure_logged_in_cookie, $user_id, $secure ){
	// filter...

	return $secure_logged_in_cookie;
}
$secure_logged_in_cookie(true/false)
Whether to use a secure cookie when logged-in.
$user_id(int)
User ID.
$secure(true/false)
Whether the connection is secure.

Where the hook is called

wp_set_auth_cookie()
secure_logged_in_cookie
wp-includes/pluggable.php 857
$secure_logged_in_cookie = apply_filters( 'secure_logged_in_cookie', $secure_logged_in_cookie, $user_id, $secure );

Where the hook is used (in WP core)

Does not used.