woocommerce_cart_contents action-hook . WC 1.0

Usage

add_action( 'woocommerce_cart_contents', 'action_function_name_4120' );
function action_function_name_4120(){
	// action...
}

Where the hook is called

<?php do_action( 'woocommerce_cart_contents' ); ?>

Where in WP core the hook is used WooCommerce