Move custom element definitions into ElementRareData

Source/bindings/v8/CustomElementWrapper.cpp

Index: Source/bindings/v8/CustomElementWrapper.cpp
diff --git a/Source/bindings/v8/CustomElementWrapper.cpp b/Source/bindings/v8/CustomElementWrapper.cpp
index 9e37d9121f556e88c1c8de63e27bc6272e336152..f4fafbb5f23fb8955bbb0517e2b70b33cb78ca8b 100644
--- a/Source/bindings/v8/CustomElementWrapper.cpp
+++ b/Source/bindings/v8/CustomElementWrapper.cpp
@@ -102,7 +102,7 @@ v8::Handle<v8::Object> CustomElementWrapper<ElementType, WrapperType>::wrap(Pass
     if (!perContextData)
         return v8::Handle<v8::Object>();
 
-    CustomElementBinding* binding = perContextData->customElementBinding(CustomElement::definitionFor(element.get()));
+    CustomElementBinding* binding = perContextData->customElementBinding(element->customElementDefinition());
     v8::Handle<v8::Object> wrapper = V8DOMWrapper::createWrapper(creationContext, binding->wrapperType(), element.get(), isolate);
     if (wrapper.IsEmpty())
         return v8::Handle<v8::Object>();