Provide messages through skin options

Bug: T259664
Depends-On: Ie52aadd6b7de8c4db66de662f2f03e295c29034d
Change-Id: Ib03c0683aa00d334224e7b3507098dedcc848e44

includes/SkinVector.php

@@ -126,26 +126,18 @@ class SkinVector extends SkinMustache {
 			// Remember that the string '0' is a valid title.
 			// From OutputPage::getPageTitle, via ::setPageTitle().
 			'html-title' => $out->getPageTitle(),
-			'msg-tagline' => $skin->msg( 'tagline' )->text(),
-
 			'html-newtalk' => $newTalksHtml ? '<div class="usermessage">' . $newTalksHtml . '</div>' : '',
 
-			'msg-vector-jumptonavigation' => $skin->msg( 'vector-jumptonavigation' )->text(),
-			'msg-vector-jumptosearch' => $skin->msg( 'vector-jumptosearch' )->text(),
-
 			'html-categories' => $skin->getCategories(),
 			'data-footer' => $this->getFooterData(),
 			'html-navigation-heading' => $skin->msg( 'navigation-heading' ),
 
 			// Header
 			'data-logos' => ResourceLoaderSkinModule::getAvailableLogos( $this->getConfig() ),
-			'msg-sitetitle' => $skin->msg( 'sitetitle' )->text(),
-			'msg-sitesubtitle' => $skin->msg( 'sitesubtitle' )->text(),
 			'main-page-href' => $mainPageHref,
 
 			'data-sidebar' => $this->buildSidebar(),
 			'sidebar-visible' => $this->isSidebarVisible(),
-			'msg-vector-action-toggle-sidebar' => $skin->msg( 'vector-action-toggle-sidebar' )->text(),
 		] + $this->getMenuProps();
 
 		if ( $skin->getUser()->isLoggedIn() ) {

skin.json

@@ -28,6 +28,14 @@
 						"skins.vector.styles",
 						"mediawiki.ui.icon",
 						"skins.vector.icons"
+					],
+					"messages": [
+						"vector-action-toggle-sidebar",
+						"vector-jumptonavigation",
+						"vector-jumptosearch",
+						"sitesubtitle",
+						"sitetitle",
+						"tagline"
 					]
 				}
 			]