Consolidate background fill layer opaqueness into one method

third_party/WebKit/Source/core/style/FillLayer.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 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 157 matching lines @@
         return m_next ? m_next->hasImage() : false;
     }
 
     bool hasFixedImage() const
     {
         if (m_image && m_attachment == FixedBackgroundAttachment)
             return true;
         return m_next ? m_next->hasFixedImage() : false;
     }
 
-    bool hasOpaqueImage(const LayoutObject*) const;
-    bool hasRepeatXY() const;
+    bool backgroundImageIsOpaque(const LayoutObject&, const float) const;
     bool clipOccludesNextLayers() const;
 
     EFillLayerType type() const { return static_cast<EFillLayerType>(m_type); }
 
     void fillUnsetProperties();
     void cullEmptyLayers();
 
     static bool imagesIdentical(const FillLayer*, const FillLayer*);
 
     EFillBox thisOrNextLayersClipMax() const { computeCachedPropertiesIfNeeded(); return static_cast<EFillBox>(m_thisOrNextLayersClipMax); }
@@ skipping 60 matching lines @@
 
     mutable unsigned m_thisOrNextLayersClipMax : 2; // EFillBox, maximum m_clip value from this to bottom layer
     mutable unsigned m_thisOrNextLayersUseContentBox : 1; // True if any of this or subsequent layers has content-box clip or origin.
     mutable unsigned m_thisOrNextLayersHaveLocalAttachment : 1; // True if any of this or subsequent layers has local attachment.
     mutable unsigned m_cachedPropertiesComputed : 1; // Set once any of the above is accessed. The layers will be frozen thereafter.
 };
 
 } // namespace blink
 
 #endif // FillLayer_h