Take into account fill-rule for polygon interpolation

Source/core/rendering/style/BasicShapes.cpp

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 27 matching lines @@
 namespace WebCore {
 
 bool BasicShape::canBlend(const BasicShape* other) const
 {
     // FIXME: Support animations between different shapes in the future.
     if (!other || !isSameType(*other))
         return false;
 
     // Just polygons with same number of vertices can be animated.
     if (type() == BasicShape::BasicShapePolygonType
-        && static_cast<const BasicShapePolygon*>(this)->values().size() != static_cast<const BasicShapePolygon*>(other)->values().size())
+        && (static_cast<const BasicShapePolygon*>(this)->values().size() != static_cast<const BasicShapePolygon*>(other)->values().size()
+        || static_cast<const BasicShapePolygon*>(this)->windRule() != static_cast<const BasicShapePolygon*>(other)->windRule()))
         return false;
 
     // Circles with keywords for radii or center coordinates cannot be animated.
     if (type() == BasicShape::BasicShapeCircleType) {
         const BasicShapeCircle* thisCircle = static_cast<const BasicShapeCircle*>(this);
         const BasicShapeCircle* otherCircle = static_cast<const BasicShapeCircle*>(other);
         if (!thisCircle->radius().canBlend(otherCircle->radius())
             || !thisCircle->centerX().canBlend(otherCircle->centerX())
             || !thisCircle->centerY().canBlend(otherCircle->centerY()))
             return false;
@@ skipping 309 matching lines @@
 }
 
 bool BasicShapeInsetRectangle::operator==(const BasicShape& o) const
 {
     if (!isSameType(o))
         return false;
     const BasicShapeInsetRectangle& other = toBasicShapeInsetRectangle(o);
     return m_right == other.m_right && m_top == other.m_top && m_bottom == other.m_bottom && m_left == other.m_left && m_cornerRadiusX == other.m_cornerRadiusX && m_cornerRadiusY == other.m_cornerRadiusY;
 }
 }