Add method scope visibility

Change-Id: Ic2c07aa870100158441e1868303f5e382fad5d06

.phpcs.xml

@@ -1,8 +1,6 @@
 <?xml version="1.0"?>
 <ruleset>
-	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
-		<exclude name="Squiz.Scope.MethodScope.Missing"/>
-	</rule>
+	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki" />
 	<file>.</file>
 	<arg name="extensions" value="php,php5,inc"/>
 	<arg name="encoding" value="UTF-8"/>

includes/SkinTimeless.php

@@ -38,7 +38,7 @@ class SkinTimeless extends SkinTemplate {
 	 *
 	 * @param OutputPage $out
 	 */
-	function setupSkinUserCss( OutputPage $out ) {
+	public function setupSkinUserCss( OutputPage $out ) {
 		parent::setupSkinUserCss( $out );
 	}
 }