Drupal 7 - Expose the machine names of permissions when viewing the permission table

perm_names.js

// Go through each of the rows on the permissin table
rows = jQuery('#permissions tr');
rows.each(function() {
    // Get the first checkbox in the row.
    checkbox = jQuery('.checkbox .form-checkbox', this).first();
    // Get the first cell, containing the permission label.
    nameCell = jQuery('td:first-child', this);
    // In case this is not a permission row
    if(checkbox.length == 0) {
        return;
    }
    
    // Embed the permission maching name on permission label cell.
    nameCell.append("<div><code>" + checkbox.val() + "</code></div>");
});