Upgrade parser-created Custom Elements in creation order.

Source/build/scripts/templates/ElementFactory.cpp.tmpl

 {% from "macros.tmpl" import license -%}
 {{ license() }}
 
 #include "config.h"
 #include "{{namespace}}ElementFactory.h"
 
 #include "RuntimeEnabledFeatures.h"
 #include "{{namespace}}Names.h"
 {%- for tag in tags|sort %}
 #include "core/{{namespace|lower}}/{{tag.interface}}.h"
@@ skipping 63 matching lines @@
 
 PassRefPtr<{{namespace}}Element> {{namespace}}ElementFactory::create{{namespace}}Element(
     const AtomicString& localName,
     Document& document,
 {%- if namespace == 'HTML' %}
     HTMLFormElement* formElement,
 {%- endif %}
     bool createdByParser)
 {
     if (CustomElement::isValidName(localName) && document.registrationContext()) {
-        RefPtr<Element> element = document.registrationContext()->createCustomTagElement(document, QualifiedName(nullAtom, localName, {{namespace_prefix}}NamespaceURI), createdByParser ? CustomElementRegistrationContext::CreatedByParser : CustomElementRegistrationContext::NotCreatedByParser);
+        RefPtr<Element> element = document.registrationContext()->createCustomTagElement(document, QualifiedName(nullAtom, localName, {{namespace_prefix}}NamespaceURI));
         ASSERT_WITH_SECURITY_IMPLICATION(element->is{{namespace}}Element());
         return static_pointer_cast<{{namespace}}Element>(element.release());
     }
 
     if (!g_constructors)
         createFunctionMap();
     if (ConstructorFunction function = g_constructors->get(localName))
         return function(document, {%- if namespace == 'HTML' %}formElement,{% endif %} createdByParser);
 
     return {{fallback_interface}}::create(QualifiedName(nullAtom, localName, {{namespace_prefix}}NamespaceURI), document);
 }
 
 } // namespace WebCore