Get rid of background-clip:text and PaintBehaviorForceBlackText.

sky/engine/core/rendering/PaintInfo.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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
@@ skipping 58 matching lines @@
             paintingRoot = 0;
             return;
         }
     }
 
     bool shouldPaintWithinRoot(const RenderObject* renderer) const
     {
         return !paintingRoot || paintingRoot == renderer;
     }
 
-    bool forceBlackText() const { return paintBehavior & PaintBehaviorForceBlackText; }
-
     void applyTransform(const AffineTransform& localToAncestorTransform, bool identityStatusUnknown = true)
     {
         if (identityStatusUnknown && localToAncestorTransform.isIdentity())
             return;
 
         context->concatCTM(localToAncestorTransform);
 
         if (rect == infiniteRect())
             return;
 
@@ skipping 17 matching lines @@
     RenderObject* paintingRoot; // used to draw just one element and its visual kids
 
 private:
     const RenderLayerModelObject* m_paintContainer; // the layer object that originates the current painting
     ListHashSet<RenderInline*>* m_outlineObjects; // used to list outlines that should be painted by a block with inline children
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_PAINTINFO_H_