Invalidate border/outline on color change only if they use current color

third_party/WebKit/Source/core/style/BorderData.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 45 matching lines @@
       return true;
     if (!top_right_.Width().IsZero())
       return true;
     if (!bottom_left_.Width().IsZero())
       return true;
     if (!bottom_right_.Width().IsZero())
       return true;
     return false;
   }
 
+  bool HasBorderColorReferencingCurrentColor() const {
+    return (left_.NonZero() && left_.GetColor().IsCurrentColor()) ||
+           (right_.NonZero() && right_.GetColor().IsCurrentColor()) ||
+           (top_.NonZero() && top_.GetColor().IsCurrentColor()) ||
+           (bottom_.NonZero() && bottom_.GetColor().IsCurrentColor());
+  }
+
   float BorderLeftWidth() const {
     if (left_.Style() == kBorderStyleNone ||
         left_.Style() == kBorderStyleHidden)
       return 0;
     return left_.Width();
   }
 
   float BorderRightWidth() const {
     if (right_.Style() == kBorderStyleNone ||
         right_.Style() == kBorderStyleHidden)
@@ skipping 65 matching lines @@
 
   LengthSize top_left_;
   LengthSize top_right_;
   LengthSize bottom_left_;
   LengthSize bottom_right_;
 };
 
 }  // namespace blink
 
 #endif  // BorderData_h