应该很容易，因为它有一个钩子，

add_filter(\'of_recognized_font_faces\',\'add_google_fonts_list\');

function add_google_fonts_list($defaults){
    //add as many as you want
    $mine = array(
        \'Ubuntu\' => "\'Ubuntu\', sans-serif",
        \'Lobster\' => "\'Lobster\', cursive",
    );
    return array_merge($mine,$defaults);
}

@import url(http://fonts.googleapis.com/css?family=Ubuntu);