Remove dead code related to compositing from Sky

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 760 matching lines @@
     bool shouldPlaceBlockDirectionScrollbarOnLogicalLeft() const { return !isLeftToRightDirection(); }
 
     TouchAction touchAction() const { return static_cast<TouchAction>(rareNonInheritedData->m_touchAction); }
     TouchActionDelay touchActionDelay() const { return static_cast<TouchActionDelay>(rareInheritedData->m_touchActionDelay); }
 
     ScrollBehavior scrollBehavior() const { return static_cast<ScrollBehavior>(rareNonInheritedData->m_scrollBehavior); }
 
     const Vector<CSSPropertyID>& willChangeProperties() const { return rareNonInheritedData->m_willChange->m_properties; }
     bool willChangeContents() const { return rareNonInheritedData->m_willChange->m_contents; }
     bool willChangeScrollPosition() const { return rareNonInheritedData->m_willChange->m_scrollPosition; }
-    bool hasWillChangeCompositingHint() const;
     bool subtreeWillChangeContents() const { return rareInheritedData->m_subtreeWillChangeContents; }
 
 // attribute setter methods
 
     void setDisplay(EDisplay v) { noninherited_flags.effectiveDisplay = v; }
     void setOriginalDisplay(EDisplay v) { noninherited_flags.originalDisplay = v; }
     void setPosition(EPosition v) { noninherited_flags.position = v; }
 
     void setLeft(const Length& v) { SET_VAR(surround, offset.m_left, v); }
     void setRight(const Length& v) { SET_VAR(surround, offset.m_right, v); }
@@ skipping 321 matching lines @@
     void setTouchAction(TouchAction t) { SET_VAR(rareNonInheritedData, m_touchAction, t); }
     void setTouchActionDelay(TouchActionDelay t) { SET_VAR(rareInheritedData, m_touchActionDelay, t); }
 
     void setScrollBehavior(ScrollBehavior b) { SET_VAR(rareNonInheritedData, m_scrollBehavior, b); }
 
     void setWillChangeProperties(const Vector<CSSPropertyID>& properties) { SET_VAR(rareNonInheritedData.access()->m_willChange, m_properties, properties); }
     void setWillChangeContents(bool b) { SET_VAR(rareNonInheritedData.access()->m_willChange, m_contents, b); }
     void setWillChangeScrollPosition(bool b) { SET_VAR(rareNonInheritedData.access()->m_willChange, m_scrollPosition, b); }
     void setSubtreeWillChangeContents(bool b) { SET_VAR(rareInheritedData, m_subtreeWillChangeContents, b); }
 
-    bool requiresAcceleratedCompositingForExternalReasons(bool b) { return rareNonInheritedData->m_requiresAcceleratedCompositingForExternalReasons; }
-    void setRequiresAcceleratedCompositingForExternalReasons(bool b) { SET_VAR(rareNonInheritedData, m_requiresAcceleratedCompositingForExternalReasons, b); }
-
     void setClipPath(PassRefPtr<ClipPathOperation> operation)
     {
         if (rareNonInheritedData->m_clipPath != operation)
             rareNonInheritedData.access()->m_clipPath = operation;
     }
     ClipPathOperation* clipPath() const { return rareNonInheritedData->m_clipPath.get(); }
 
     static ClipPathOperation* initialClipPath() { return 0; }
 
     const CounterDirectiveMap* counterDirectives() const;
@@ skipping 242 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_