Respect fallback colors when interpolating text-decoration-color.

Source/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 1485 matching lines @@
 
     bool isSharable() const;
 
     bool emptyState() const { return noninherited_flags.emptyState; }
     void setEmptyState(bool b) { setUnique(); noninherited_flags.emptyState = b; }
     bool firstChildState() const { return noninherited_flags.firstChildState; }
     void setFirstChildState() { setUnique(); noninherited_flags.firstChildState = true; }
     bool lastChildState() const { return noninherited_flags.lastChildState; }
     void setLastChildState() { setUnique(); noninherited_flags.lastChildState = true; }
 
-    StyleColor visitedDependentDecorationStyleColor() const;
-    Color visitedDependentDecorationColor() const;
     Color visitedDependentColor(int colorProperty) const;
 
     void setHasExplicitlyInheritedProperties() { noninherited_flags.explicitInheritance = true; }
     bool hasExplicitlyInheritedProperties() const { return noninherited_flags.explicitInheritance; }
 
     bool hasBoxDecorations() const { return hasBorder() || hasBorderRadius() || hasOutline() || hasAppearance() || boxShadow() || hasFilter(); }
 
     bool borderObscuresBackground() const;
     void getBorderEdgeInfo(BorderEdge edges[], bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true) const;
 
@@ skipping 251 matching lines @@
     StyleColor visitedLinkBorderBottomColor() const { return rareNonInheritedData->m_visitedLinkBorderBottomColor; }
     StyleColor visitedLinkBorderTopColor() const { return rareNonInheritedData->m_visitedLinkBorderTopColor; }
     StyleColor visitedLinkOutlineColor() const { return rareNonInheritedData->m_visitedLinkOutlineColor; }
     StyleColor visitedLinkColumnRuleColor() const { return rareNonInheritedData->m_multiCol->m_visitedLinkColumnRuleColor; }
     StyleColor textDecorationColor() const { return rareNonInheritedData->m_textDecorationColor; }
     StyleColor visitedLinkTextDecorationColor() const { return rareNonInheritedData->m_visitedLinkTextDecorationColor; }
     StyleColor visitedLinkTextEmphasisColor() const { return rareInheritedData->visitedLinkTextEmphasisColor(); }
     StyleColor visitedLinkTextFillColor() const { return rareInheritedData->visitedLinkTextFillColor(); }
     StyleColor visitedLinkTextStrokeColor() const { return rareInheritedData->visitedLinkTextStrokeColor(); }
 
+    StyleColor decorationColorIncludingFallback(bool visitedLink) const;
     Color colorIncludingFallback(int colorProperty, bool visitedLink) const;
 
     Color stopColor() const { return svgStyle().stopColor(); }
     Color floodColor() const { return svgStyle().floodColor(); }
     Color lightingColor() const { return svgStyle().lightingColor(); }
 
     void appendContent(PassOwnPtr<ContentData>);
     void addAppliedTextDecoration(const AppliedTextDecoration&);
 
     bool diffNeedsFullLayoutAndPaintInvalidation(const RenderStyle& other) const;
@@ skipping 108 matching lines @@
 inline bool RenderStyle::hasPseudoElementStyle() const
 {
     return noninherited_flags.pseudoBits & PSEUDO_ELEMENT_MASK;
 }
 
 float calcBorderRadiiConstraintScaleFor(const FloatRect&, const FloatRoundedRect::Radii&);
 
 } // namespace blink
 
 #endif // RenderStyle_h