Separate Custom Element resolution and upgrade/createdCallback.

Source/core/dom/custom/CustomElement.cpp

Index: Source/core/dom/custom/CustomElement.cpp
diff --git a/Source/core/dom/custom/CustomElement.cpp b/Source/core/dom/custom/CustomElement.cpp
index cc80568260855b08671f58db7bf46b1f479c47fa..8884873bc349cf70f7fa61526cab3c09a3efaaa5 100644
--- a/Source/core/dom/custom/CustomElement.cpp
+++ b/Source/core/dom/custom/CustomElement.cpp
@@ -106,12 +106,7 @@ void CustomElement::define(Element* element, PassRefPtr<CustomElementDefinition>
 
     case Element::WaitingForUpgrade:
         definitions().add(element, definition);
-        if (element->inDocument() && element->document().domWindow())
-            CustomElementScheduler::scheduleAttachedCallback(definition->callbacks(), element);
-        // FIXME: Push this through the callback scheduler. That
-        // design makes resolve and define robust to being called
-        // during other operations.
-        definition->callbacks()->created(element);
+        CustomElementScheduler::scheduleCreatedCallback(definition->callbacks(), element);
         break;
     }
 }