Remove the remaining parts of ignorePendingStylesheets and placeholder styles.

sky/engine/core/rendering/style/RenderStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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 340 matching lines @@
     {
         return imageOutsets(maskBoxImage());
     }
 
     bool hasFilterOutsets() const { return hasFilter() && filter().hasOutsets(); }
     FilterOutsets filterOutsets() const { return hasFilter() ? filter().outsets() : FilterOutsets(); }
 
     Order rtlOrdering() const { return static_cast<Order>(inherited_flags.m_rtlOrdering); }
     void setRTLOrdering(Order o) { inherited_flags.m_rtlOrdering = o; }
 
-    bool isStyleAvailable() const;
-
     // attribute getter methods
 
     EDisplay display() const { return static_cast<EDisplay>(noninherited_flags.effectiveDisplay); }
     EDisplay originalDisplay() const { return static_cast<EDisplay>(noninherited_flags.originalDisplay); }
 
     const Length& left() const { return surround->offset.left(); }
     const Length& right() const { return surround->offset.right(); }
     const Length& top() const { return surround->offset.top(); }
     const Length& bottom() const { return surround->offset.bottom(); }
 
@@ skipping 1014 matching lines @@
 
     rareInheritedData.access()->m_textOrientation = textOrientation;
     return true;
 }
 
 float calcBorderRadiiConstraintScaleFor(const FloatRect&, const FloatRoundedRect::Radii&);
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_STYLE_RENDERSTYLE_H_