function twentyseventeen_social_links_icons() {
  // Supported social links icons.
  $social_links_icons = array(
    'behance.net'     => 'behance',
    'codepen.io'      => 'codepen',
    'deviantart.com'  => 'deviantart',
    'digg.com'        => 'digg',
    'docker.com'      => 'dockerhub',
    'dribbble.com'    => 'dribbble',
    'dropbox.com'     => 'dropbox',
    'facebook.com'    => 'facebook',
    'flickr.com'      => 'flickr',
    'foursquare.com'  => 'foursquare',
    'plus.google.com' => 'google-plus',
    'github.com'      => 'github',
    'instagram.com'   => 'instagram',
    'linkedin.com'    => 'linkedin',
    'mailto:'         => 'envelope-o',
    'medium.com'      => 'medium',
    'pinterest.com'   => 'pinterest-p',
    'pscp.tv'         => 'periscope',
    'getpocket.com'   => 'get-pocket',
    'reddit.com'      => 'reddit-alien',
    'skype.com'       => 'skype',
    'skype:'          => 'skype',
    'slideshare.net'  => 'slideshare',
    'snapchat.com'    => 'snapchat-ghost',
    'soundcloud.com'  => 'soundcloud',
    'spotify.com'     => 'spotify',
    'stumbleupon.com' => 'stumbleupon',
    't.me'            => 'telegram',
    'telegram.me'     => 'telegram',
    'tumblr.com'      => 'tumblr',
    'twitch.tv'       => 'twitch',
    'twitter.com'     => 'twitter',
    'vimeo.com'       => 'vimeo',
    'vine.co'         => 'vine',
    'vk.com'          => 'vk',
    'wa.me'           => 'whatsapp',
    'whatsapp.com'    => 'whatsapp',
    'wordpress.org'   => 'wordpress',
    'wordpress.com'   => 'wordpress',
    'yelp.com'        => 'yelp',
    'youtube.com'     => 'youtube',
  );

  
/**
 * Filters Twenty Seventeen social links icons.
 *
 * @since Twenty Seventeen 1.0
 *
 * @param array $social_links_icons Array of social links icons.
 */
  return apply_filters( 'twentyseventeen_social_links_icons', $social_links_icons );
}