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diff --git a/www/wiki/includes/skins/SkinFactory.php b/www/wiki/includes/skins/SkinFactory.php
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+<?php
+
+/**
+ * Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+use MediaWiki\MediaWikiServices;
+
+/**
+ * Factory class to create Skin objects
+ *
+ * @since 1.24
+ */
+class SkinFactory {
+
+	/**
+	 * Map of name => callback
+	 * @var array
+	 */
+	private $factoryFunctions = [];
+	/**
+	 * Map of name => fallback human-readable name, used when the 'skinname-<skin>' message is not
+	 * available
+	 *
+	 * @var array
+	 */
+	private $displayNames = [];
+
+	/**
+	 * @deprecated in 1.27
+	 * @return SkinFactory
+	 */
+	public static function getDefaultInstance() {
+		return MediaWikiServices::getInstance()->getSkinFactory();
+	}
+
+	/**
+	 * Register a new Skin factory function.
+	 *
+	 * Will override if it's already registered.
+	 *
+	 * @param string $name Internal skin name. Should be all-lowercase (technically doesn't have
+	 *     to be, but doing so would change the case of i18n message keys).
+	 * @param string $displayName For backwards-compatibility with old skin loading system. This is
+	 *     the text used as skin's human-readable name when the 'skinname-<skin>' message is not
+	 *     available. It should be the same as the skin name provided in $wgExtensionCredits.
+	 * @param callable $callback Callback that takes the skin name as an argument
+	 * @throws InvalidArgumentException If an invalid callback is provided
+	 */
+	public function register( $name, $displayName, $callback ) {
+		if ( !is_callable( $callback ) ) {
+			throw new InvalidArgumentException( 'Invalid callback provided' );
+		}
+		$this->factoryFunctions[$name] = $callback;
+		$this->displayNames[$name] = $displayName;
+	}
+
+	/**
+	 * Returns an associative array of:
+	 *  skin name => human readable name
+	 *
+	 * @return array
+	 */
+	public function getSkinNames() {
+		return $this->displayNames;
+	}
+
+	/**
+	 * Create a given Skin using the registered callback for $name.
+	 * @param string $name Name of the skin you want
+	 * @throws SkinException If a factory function isn't registered for $name
+	 * @throws UnexpectedValueException If the factory function returns a non-Skin object
+	 * @return Skin
+	 */
+	public function makeSkin( $name ) {
+		if ( !isset( $this->factoryFunctions[$name] ) ) {
+			throw new SkinException( "No registered builder available for $name." );
+		}
+		$skin = call_user_func( $this->factoryFunctions[$name], $name );
+		if ( $skin instanceof Skin ) {
+			return $skin;
+		} else {
+			throw new UnexpectedValueException( "The builder for $name returned a non-Skin object." );
+		}
+	}
+}