Remove Element#attributes.

sky/engine/core/dom/ElementRareData.h

Index: sky/engine/core/dom/ElementRareData.h
diff --git a/sky/engine/core/dom/ElementRareData.h b/sky/engine/core/dom/ElementRareData.h
index ea7829a0156673ec6a7a15f793e59004faaff363..297f2b130dccd83479a5b73c5e5859ca35696750 100644
--- a/sky/engine/core/dom/ElementRareData.h
+++ b/sky/engine/core/dom/ElementRareData.h
@@ -23,8 +23,6 @@
 #define ElementRareData_h
 
 #include "core/animation/ActiveAnimations.h"
-#include "core/dom/Attr.h"
-#include "core/dom/NamedNodeMap.h"
 #include "core/dom/NodeRareData.h"
 #include "core/dom/custom/CustomElementDefinition.h"
 #include "core/dom/shadow/ElementShadow.h"
@@ -72,9 +70,6 @@ public:
         return *m_shadow;
     }
 
-    NamedNodeMap* attributeMap() const { return m_attributeMap.get(); }
-    void setAttributeMap(PassOwnPtr<NamedNodeMap> attributeMap) { m_attributeMap = attributeMap; }
-
     RenderStyle* computedStyle() const { return m_computedStyle.get(); }
     void setComputedStyle(PassRefPtr<RenderStyle> computedStyle) { m_computedStyle = computedStyle; }
     void clearComputedStyle() { m_computedStyle = nullptr; }
@@ -105,10 +100,6 @@ public:
     void setCustomElementDefinition(PassRefPtr<CustomElementDefinition> definition) { m_customElementDefinition = definition; }
     CustomElementDefinition* customElementDefinition() const { return m_customElementDefinition.get(); }
 
-    Vector<RefPtr<Attr> >& ensureAttrNodeList();
-    Vector<RefPtr<Attr> >* attrNodeList() { return m_attrNodeList.get(); }
-    void removeAttrNodeList() { m_attrNodeList.clear(); }
-
     void traceAfterDispatch(Visitor*);
 
 private:
@@ -119,8 +110,6 @@ private:
 
     OwnPtr<ClassList> m_classList;
     OwnPtr<ElementShadow> m_shadow;
-    OwnPtr<NamedNodeMap> m_attributeMap;
-    OwnPtr<Vector<RefPtr<Attr> > > m_attrNodeList;
     OwnPtr<InputMethodContext> m_inputMethodContext;
     OwnPtr<ActiveAnimations> m_activeAnimations;
     OwnPtr<InlineCSSStyleDeclaration> m_cssomWrapper;