3.9 Removed Custom Styles Dropdown from TinyMCE

I used the code below:

/**************************/
/*  ADD BUTTONS TO EDITOR */
/**************************/
function enable_more_buttons($buttons) {
  $buttons[] = 'sub';
  $buttons[] = 'sup';

  return $buttons;
}
add_filter("mce_buttons_2", "enable_more_buttons");

to add enable Subscript and Superscript buttons to the TinyMCE

I also used:

/* Add custom styles to the Styles drop down menu in the TinyMCE Editor
----------------------------------------------------------------------------------------*/
add_filter( 'tiny_mce_before_init', 'ag_custom_tinymce_styles' );
function ag_custom_tinymce_styles( $init ) {
	$init['theme_advanced_buttons2_add_before'] = 'styleselect';
	$init['theme_advanced_styles'] = 'Blue=blue,Grey=grey';
	return $init;
}
add_filter('mce_css', 'my_editor_style');
function my_editor_style($url) {

  if ( !empty($url) )
    $url .= ',';

  // Change the path here if using sub-directory
  $url .= trailingslashit( get_stylesheet_directory_uri() ) . 'css/editor-style.css';

  return $url;
}

To add a custom dropdown Styles menu to the editor.

I just updated a site I’m developing to WordPress 3.9, and now neither of these functions work. Both items I added to the TinyMCE no longer show up.

Anyone know what would need to be changed to make these work? I didn’t write these bits of code, I just found them from Tutorials, so I’m not entirely sure what some of these functions are doing, or how they work.