WordPress at a glance
filter is not described

content_url filter-hook . WP 2.8.0

Filters the URL to the content directory.

Usage

add_filter( 'content_url', 'filter_function_name_3079', 10, 2 );
function filter_function_name_3079( $url, $path ){
	// filter...

	return $url;
}
$url(string)
The complete URL to the content directory including scheme and path.
$path(string)
Path relative to the URL to the content directory. Blank string if no path is specified.

Where the hook is called

content_url()
wp-includes/link-template.php 3134
return apply_filters( 'content_url', $url, $path);

Where the hook is used (in WP core)

Does not used.