Remove embedder custom elements.

sky/engine/core/dom/custom/CustomElementRegistry.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 41 matching lines @@
 #if ENABLE(OILPAN)
     // In oilpan we don't have the disposed phase for context lifecycle observer.
     virtual void documentWasDetached() override { m_wentAway = true; }
 #else
     virtual void documentWasDisposed() override { m_wentAway = true; }
 #endif
 
     bool m_wentAway;
 };
 
-CustomElementDefinition* CustomElementRegistry::registerElement(Document* document, CustomElementConstructorBuilder* constructorBuilder, const AtomicString& userSuppliedName, CustomElement::NameSet validNames, ExceptionState& exceptionState)
+CustomElementDefinition* CustomElementRegistry::registerElement(Document* document, CustomElementConstructorBuilder* constructorBuilder, const AtomicString& userSuppliedName, ExceptionState& exceptionState)
 {
     // FIXME: In every instance except one it is the
     // CustomElementConstructorBuilder that observes document
     // destruction during registration. This responsibility should be
     // consolidated in one place.
     RegistrationContextObserver observer(document);
 
     AtomicString type = userSuppliedName.lower();
 
-    if (!CustomElement::isValidName(type, validNames)) {
+    if (!CustomElement::isValidName(type)) {
         CustomElementException::throwException(CustomElementException::InvalidName, type, exceptionState);
         return 0;
     }
 
     if (m_definitions.contains(type)) {
         CustomElementException::throwException(CustomElementException::TypeAlreadyRegistered, type, exceptionState);
         return 0;
     }
 
     QualifiedName tagName = nullName;
@@ skipping 26 matching lines @@
 
     return definition.get();
 }
 
 CustomElementDefinition* CustomElementRegistry::find(const CustomElementDescriptor& descriptor) const
 {
     return m_definitions.get(descriptor);
 }
 
 } // namespace blink