Move custom element definitions into ElementRareData

Source/core/dom/custom/CustomElement.h

Index: Source/core/dom/custom/CustomElement.h
diff --git a/Source/core/dom/custom/CustomElement.h b/Source/core/dom/custom/CustomElement.h
index 2fb4adde5cf26bd7f6a1665f6557f5c9e1fdcddd..c9504eb7863019e4dc3a88076c349b6470c48153 100644
--- a/Source/core/dom/custom/CustomElement.h
+++ b/Source/core/dom/custom/CustomElement.h
@@ -62,9 +62,6 @@ public:
     // API for registration contexts
     static void define(Element*, PassRefPtr<CustomElementDefinition>);
 
-    // API for wrapper creation, which uses a definition as a key
-    static CustomElementDefinition* definitionFor(Element*);
-
     // API for Element to kick off changes
 
     static void attributeDidChange(Element*, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue);
@@ -76,24 +73,6 @@ private:
     CustomElement();
 
     static Vector<AtomicString>& embedderCustomElementNames();
-
-    // Maps resolved elements to their definitions
-
-    class DefinitionMap {
-        WTF_MAKE_NONCOPYABLE(DefinitionMap);
-    public:
-        DefinitionMap() { }
-        ~DefinitionMap() { }
-
-        void add(Element*, PassRefPtr<CustomElementDefinition>);
-        void remove(Element* element) { m_definitions.remove(element); }
-        CustomElementDefinition* get(Element* element) const { return m_definitions.get(element); }
-
-    private:
-        typedef HashMap<Element*, RefPtr<CustomElementDefinition> > ElementDefinitionHashMap;
-        ElementDefinitionHashMap m_definitions;
-    };
-    static DefinitionMap& definitions();
 };
 
 }