[CSS Shapes] Omit polygon default fill-rule

Source/core/css/CSSBasicShapes.cpp

 /*
  * Copyright (C) 2011 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 323 matching lines @@
     visitor->trace(m_radiusY);
     CSSBasicShape::trace(visitor);
 }
 
 static String buildPolygonString(const WindRule& windRule, const Vector<String>& points, const String& layoutBox)
 {
     ASSERT(!(points.size() % 2));
 
     StringBuilder result;
     const char evenOddOpening[] = "polygon(evenodd, ";
-    const char nonZeroOpening[] = "polygon(nonzero, ";
+    const char nonZeroOpening[] = "polygon(";
     const char commaSeparator[] = ", ";
-    COMPILE_ASSERT(sizeof(evenOddOpening) == sizeof(nonZeroOpening), polygon_string_openings_have_same_length);
+    COMPILE_ASSERT(sizeof(evenOddOpening) > sizeof(nonZeroOpening), polygon_string_openings_have_same_length);
 
     // Compute the required capacity in advance to reduce allocations.
     size_t length = sizeof(evenOddOpening) - 1;
     for (size_t i = 0; i < points.size(); i += 2) {
         if (i)
             length += (sizeof(commaSeparator) - 1);
         // add length of two strings, plus one for the space separator.
         length += points[i].length() + 1 + points[i + 1].length();
     }
     if (!layoutBox.isEmpty())
@@ skipping 243 matching lines @@
     visitor->trace(m_left);
     visitor->trace(m_topLeftRadius);
     visitor->trace(m_topRightRadius);
     visitor->trace(m_bottomRightRadius);
     visitor->trace(m_bottomLeftRadius);
     CSSBasicShape::trace(visitor);
 }
 
 } // namespace WebCore