Remove almost all clients of isHTMLElement

sky/engine/core/dom/Element.h

Index: sky/engine/core/dom/Element.h
diff --git a/sky/engine/core/dom/Element.h b/sky/engine/core/dom/Element.h
index fbfe3298813c430319c29d7012eaab7957d0288e..63671715ab605f5e2b8e73b214b79ef5e60ce67f 100644
--- a/sky/engine/core/dom/Element.h
+++ b/sky/engine/core/dom/Element.h
@@ -135,7 +135,6 @@ public:
     String tagName() const { return nodeName(); }
 
     bool hasTagName(const QualifiedName& tagName) const { return m_tagName == tagName; }
-    bool hasTagName(const HTMLQualifiedName& name) const { return hasLocalName(name.localName()); }
 
     // A fast function for checking the local name against another atomic string.
     bool hasLocalName(const AtomicString& other) const { return m_tagName.localName() == other; }
@@ -521,11 +520,6 @@ inline ShadowRoot* Node::shadowRoot() const
     return toElement(this)->shadowRoot();
 }
 
-inline bool Node::hasTagName(const HTMLQualifiedName& name) const
-{
-    return isHTMLElement() && toElement(*this).hasTagName(name);
-}
-
 inline void Element::invalidateStyleAttribute()
 {
     ASSERT(elementData());