Remove embedder custom elements.

sky/engine/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 477 matching lines @@
     int requestAnimationFrame(PassOwnPtr<RequestAnimationFrameCallback>);
     void cancelAnimationFrame(int id);
     void serviceScriptedAnimations(double monotonicAnimationStartTime);
 
     virtual EventTarget* errorEventTarget() override final;
     virtual void logExceptionToConsole(const String& errorMessage, int scriptId, const String& sourceURL, int lineNumber, int columnNumber, PassRefPtr<ScriptCallStack>) override final;
 
     IntSize initialViewportSize() const;
 
     ScriptValue registerElement(ScriptState*, const AtomicString& name, ExceptionState&);
-    ScriptValue registerElement(ScriptState*, const AtomicString& name, const Dictionary& options, ExceptionState&, CustomElement::NameSet validNames = CustomElement::StandardNames);
+    ScriptValue registerElement(ScriptState*, const AtomicString& name, const Dictionary& options, ExceptionState&);
     CustomElementRegistrationContext* registrationContext() { return m_registrationContext.get(); }
     CustomElementMicrotaskRunQueue* customElementMicrotaskRunQueue();
 
     void setImportsController(HTMLImportsController*);
     HTMLImportsController* importsController() const { return m_importsController; }
     HTMLImportsController& ensureImportsController();
     HTMLImportLoader* importLoader() const;
     HTMLImport* import() const;
 
     bool haveImportsLoaded() const;
@@ skipping 276 matching lines @@
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLiveDocumentInstances();
 #endif
 
 #endif  // SKY_ENGINE_CORE_DOM_DOCUMENT_H_