LibWeb: Use String for getting/setting MediaQueryList media

Userland/Libraries/LibWeb/CSS/MediaQueryList.cpp

@@ -43,9 +43,9 @@ void MediaQueryList::visit_edges(Cell::Visitor& visitor)
 }
 
 // https://drafts.csswg.org/cssom-view/#dom-mediaquerylist-media
-DeprecatedString MediaQueryList::media() const
+String MediaQueryList::media() const
 {
-    return serialize_a_media_query_list(m_media).to_deprecated_string();
+    return serialize_a_media_query_list(m_media);
 }
 
 // https://drafts.csswg.org/cssom-view/#dom-mediaquerylist-matches

Userland/Libraries/LibWeb/CSS/MediaQueryList.h

@@ -22,7 +22,7 @@ public:
 
     virtual ~MediaQueryList() override = default;
 
-    DeprecatedString media() const;
+    String media() const;
     bool matches() const;
     bool evaluate();
 

Userland/Libraries/LibWeb/CSS/StyleSheet.h

@@ -39,7 +39,7 @@ public:
         return m_media;
     }
 
-    void set_media(DeprecatedString media)
+    void set_media(String media)
     {
         m_media->set_media_text(media);
     }

Userland/Libraries/LibWeb/DOM/Document.cpp

@@ -2181,7 +2181,7 @@ void Document::evaluate_media_queries_and_report_changes()
 
         if (did_match != now_matches) {
             CSS::MediaQueryListEventInit init;
-            init.media = String::from_deprecated_string(media_query_list->media()).release_value_but_fixme_should_propagate_errors();
+            init.media = media_query_list->media();
             init.matches = now_matches;
             auto event = CSS::MediaQueryListEvent::create(realm(), HTML::EventNames::change, init);
             event->set_is_trusted(true);

Userland/Libraries/LibWeb/DOM/StyleElementUtils.cpp

@@ -95,7 +95,7 @@ void StyleElementUtils::create_a_css_style_sheet(DOM::Document& document, Deprec
     sheet.set_owner_css_rule(owner_rule);
     sheet.set_owner_node(owner_node);
     sheet.set_type(MUST(String::from_deprecated_string(type)));
-    sheet.set_media(move(media));
+    sheet.set_media(MUST(String::from_deprecated_string(media)));
     sheet.set_title(MUST(String::from_deprecated_string(title)));
     sheet.set_alternate(alternate);
     sheet.set_origin_clean(origin_clean);

Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp

@@ -369,7 +369,7 @@ void HTMLLinkElement::process_stylesheet_resource(bool success, Fetch::Infrastru
 
                 if (m_loaded_style_sheet) {
                     m_loaded_style_sheet->set_owner_node(this);
-                    m_loaded_style_sheet->set_media(deprecated_attribute(HTML::AttributeNames::media));
+                    m_loaded_style_sheet->set_media(attribute(HTML::AttributeNames::media).value_or({}));
                     document().style_sheets().add_sheet(*m_loaded_style_sheet);
                 } else {
                     dbgln_if(CSS_LOADER_DEBUG, "HTMLLinkElement: Failed to parse stylesheet: {}", resource()->url());