Dartium changes for custom element lifecycle events.

Source/bindings/dart/DartDOMWrapper.h

Index: Source/bindings/dart/DartDOMWrapper.h
diff --git a/Source/bindings/dart/DartDOMWrapper.h b/Source/bindings/dart/DartDOMWrapper.h
index a4f8343554d4062cd7822319868e19e66de9cd4e..8cc93126124a1d7a0940a1ff01b534d81c308c5b 100644
--- a/Source/bindings/dart/DartDOMWrapper.h
+++ b/Source/bindings/dart/DartDOMWrapper.h
@@ -46,6 +46,10 @@
 
 namespace WebCore {
 
+template<typename HTMLElement>
+class DartCustomElementWrapper;
+class HTMLElement;
+
 template<class BindingsClass>
 struct DartDOMWrapperTraits;
 
@@ -68,11 +72,7 @@ public:
         DartDOMData* domData = DartDOMData::current();
         if (isNode) {
             Node* domNodeObject = reinterpret_cast<Node*>(domObject);
-            Dart_WeakPersistentHandle wrapper = domData->nodeMap()->get(domNodeObject);
-            if (wrapper && domNodeObject->isCustomElement()) {
-                return lookupCustomElementWrapper(domData, wrapper, domNodeObject);
-            }
-            return wrapper;
+            return domData->nodeMap()->get(domNodeObject);
         }
         return domData->objectMap()->get(domObject);
     }
@@ -252,9 +252,6 @@ private:
         domObject->deref();
     }
 
-    static Dart_WeakPersistentHandle lookupCustomElementWrapper(
-        DartDOMData*, Dart_WeakPersistentHandle wrapper, Node* domObject);
-
     template <class BindingsClass>
     static void associateWrapper(typename BindingsClass::NativeType* domObject, Dart_Handle newInstance)
     {
@@ -282,7 +279,7 @@ private:
         Traits::EventTargetTraits::removeWrapper(domData, domObject);
     }
 
-    friend class DartCustomElement;
+    friend class DartCustomElementWrapper<HTMLElement>;
 };
 
 template<bool isNode>