Remove UserAgent ShadowRoot + Author ShadowRoot code.

third_party/WebKit/Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 344 matching lines @@
     ShadowRoot* openShadowRoot() const;
     ShadowRoot* closedShadowRoot() const;
     ShadowRoot* authorShadowRoot() const;
     ShadowRoot* userAgentShadowRoot() const;
 
     ShadowRoot* youngestShadowRoot() const;
 
     ShadowRoot* shadowRootIfV1() const;
 
     ShadowRoot& ensureUserAgentShadowRoot();
-    virtual void willAddFirstAuthorShadowRoot() { }
 
     bool isInDescendantTreeOf(const Element* shadowHost) const;
 
     const ComputedStyle* ensureComputedStyle(PseudoId = PseudoIdNone);
 
     // Methods for indicating the style is affected by dynamic updates (e.g., children changing, our position changing in our sibling list, etc.)
     bool styleAffectedByEmpty() const { return hasElementFlag(StyleAffectedByEmpty); }
     void setStyleAffectedByEmpty() { setElementFlag(StyleAffectedByEmpty); }
 
     void setIsInCanvasSubtree(bool value) { setElementFlag(IsInCanvasSubtree, value); }
@@ skipping 583 matching lines @@
     static T* create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     T* T::create(const QualifiedName& tagName, Document& document) \
     { \
         return new T(tagName, document); \
     }
 
 } // namespace blink
 
 #endif // Element_h