Error on admin/fuctions.php

Hello I made those changes and it gave problem. Below.

Fatal error: Class ‘TLTheme’ not found in /home/storage/1/92/d2/bmsassociados/public_html/wp-includes/functions.php on line 2

<?php

/******************************************************************************/

/******************************************************************************/

$Theme=new TLTheme();

$GoogleFont=new TLThemeGoogleFont();

$GoogleFont->scheduleDownload();

add_action(‘admin_init’,array($Theme,‘adminInit’));

add_action(‘admin_menu’,array($Theme,‘adminMenuInit’));

add_action(‘wp_ajax_theme_admin_google_font_dictionary’,array($GoogleFont,‘getFontByName’));

add_action(‘wp_ajax_theme_admin_option_page_save’,array($Theme,‘adminOptionPanelSave’));

add_action(‘wp_ajax_theme_admin_option_page_restore’,array($Theme,‘adminOptionPanelRestore’));

add_action(‘wp_ajax_theme_admin_option_page_import’,array($Theme,‘adminOptionPanelImport’));

add_action(‘wp_ajax_theme_admin_option_page_import_google_font’,array($GoogleFont,‘import’));

add_action(‘after_setup_theme’,array($Theme,‘setupTheme’));

add_action(‘switch_theme’,array($Theme,‘switchTheme’));

add_filter(‘upload_mimes’,‘custom_upload_mimes’);

?>

function custom_upload_mimes($existing_mimes=array())

{

$existing_mimes['txt']='text/plain';

return $existing_mimes;

}

/******************************************************************************/

/******************************************************************************/

Not sure regarding which changes you are talking about so could you please tell me a bit more in detail so that i can help you?