Remove illegal compositing queries in RenderObject::adjustStyleDifference

Source/core/rendering/RenderLayer.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 418 matching lines @@
 
     PassOwnPtr<Vector<FloatRect> > collectTrackedRepaintRects() const;
 
     RenderLayerBlendInfo& blendInfo() { return m_blendInfo; }
 
     void setOffsetFromSquashingLayerOrigin(IntSize offset) { m_offsetFromSquashingLayerOrigin = offset; }
     IntSize offsetFromSquashingLayerOrigin() const { ASSERT(isAllowedToQueryCompositingState()); return m_offsetFromSquashingLayerOrigin; }
 
     bool scrollsOverflow() const;
 
-    bool hasDirectReasonsForCompositing() const { return compositingReasons() & CompositingReasonComboAllDirectReasons; }
-
     CompositingReasons styleDeterminedCompositingReasons() const { return m_styleDeterminedCompositingReasons; }
     void setStyleDeterminedCompositingReasons(CompositingReasons reasons) { ASSERT(reasons == (reasons & CompositingReasonComboAllStyleDeterminedReasons)); m_styleDeterminedCompositingReasons = reasons; }
 
     class AncestorDependentProperties {
     public:
         AncestorDependentProperties()
             : opacityAncestor(0)
             , transformAncestor(0)
             , filterAncestor(0)
             , isUnclippedDescendant(false)
@@ skipping 274 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const WebCore::RenderLayer*);
 void showLayerTree(const WebCore::RenderObject*);
 #endif
 
 #endif // RenderLayer_h