LibWeb: Remove unnecessary lowercase name property from Attr

Author: https://github.com/tcl3
Commit: 61af399b50
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6779

Libraries/LibWeb/CSS/StyleComputer.cpp

@@ -3749,7 +3749,7 @@ static void for_each_element_hash(DOM::Element const& element, auto callback)
     for (auto const& class_ : element.class_names())
         callback(class_.hash());
     element.for_each_attribute([&](auto& attribute) {
-        callback(attribute.lowercase_name().hash());
+        callback(attribute.name().ascii_case_insensitive_hash());
     });
 }
 

Libraries/LibWeb/DOM/Attr.cpp

@@ -38,7 +38,6 @@ GC::Ref<Attr> Attr::clone(Document& document) const
 Attr::Attr(Document& document, QualifiedName qualified_name, String value, Element* owner_element)
     : Node(document, NodeType::ATTRIBUTE_NODE)
     , m_qualified_name(move(qualified_name))
-    , m_lowercase_name(MUST(String(m_qualified_name.as_string()).to_lowercase()))
     , m_value(move(value))
     , m_owner_element(owner_element)
 {

Libraries/LibWeb/DOM/Attr.h

@@ -31,7 +31,6 @@ public:
     Optional<FlyString> const& prefix() const { return m_qualified_name.prefix(); }
     FlyString const& local_name() const { return m_qualified_name.local_name(); }
     FlyString const& name() const { return m_qualified_name.as_string(); }
-    FlyString const& lowercase_name() const { return m_lowercase_name; }
 
     String const& value() const { return m_value; }
     WebIDL::ExceptionOr<void> set_value(String value);
@@ -53,7 +52,6 @@ private:
     virtual void visit_edges(Cell::Visitor&) override;
 
     QualifiedName m_qualified_name;
-    FlyString m_lowercase_name;
     String m_value;
     GC::Ptr<Element> m_owner_element;
 };