How to use AuthServiceProvider from routes.php in Laravel?

Seen the laravel AuthServiceProvider functionalities, http://ift.tt/1MG86m6, I'd need to filter routes based upon user permissions, like:

Route::group(['middleware' => 'can','action'="user.admin"], function () {
    Route::any('/', ['as' => 'user.index', 'uses' => 'UserController@index']);
    Route::any('{id}', ['as' => 'user.show', 'uses' => 'UserController@show']);
});

How to do this?

via Chebli Mohamed