valueForBorderRadiusShorthand returns wrong values in some case.

Source/core/css/CSSComputedStyleDeclaration.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 675 matching lines @@
 {
     RefPtr<CSSValueList> list = valuesForBorderRadiusCorner(radius, style, renderer, renderView);
     if (list->item(0)->equals(*list->item(1)))
         return list->item(0);
     return list.release();
 }
 
 static PassRefPtr<CSSValueList> valueForBorderRadiusShorthand(const RenderStyle* style, RenderObject* renderer, RenderView* renderView)
 {
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
+
     bool showHorizontalBottomLeft = style->borderTopRightRadius().width() != style->borderBottomLeftRadius().width();
-    bool showHorizontalBottomRight = style->borderBottomRightRadius().width() != style->borderTopLeftRadius().width();
-    bool showHorizontalTopRight = style->borderTopRightRadius().width() != style->borderTopLeftRadius().width();
+    bool showHorizontalBottomRight = showHorizontalBottomLeft || (style->borderBottomRightRadius().width() != style->borderTopLeftRadius().width());
+    bool showHorizontalTopRight = showHorizontalBottomRight || (style->borderTopRightRadius().width() != style->borderTopLeftRadius().width());
 
     bool showVerticalBottomLeft = style->borderTopRightRadius().height() != style->borderBottomLeftRadius().height();
-    bool showVerticalBottomRight = (style->borderBottomRightRadius().height() != style->borderTopLeftRadius().height()) || showVerticalBottomLeft;
-    bool showVerticalTopRight = (style->borderTopRightRadius().height() != style->borderTopLeftRadius().height()) || showVerticalBottomRight;
+    bool showVerticalBottomRight = showVerticalBottomLeft || (style->borderBottomRightRadius().height() != style->borderTopLeftRadius().height());
+    bool showVerticalTopRight = showVerticalBottomRight || (style->borderTopRightRadius().height() != style->borderTopLeftRadius().height());
     bool showVerticalTopLeft = (style->borderTopLeftRadius().width() != style->borderTopLeftRadius().height());
 
     RefPtr<CSSValueList> topLeftRadius = valuesForBorderRadiusCorner(style->borderTopLeftRadius(), style, renderer, renderView);
     RefPtr<CSSValueList> topRightRadius = valuesForBorderRadiusCorner(style->borderTopRightRadius(), style, renderer, renderView);
     RefPtr<CSSValueList> bottomRightRadius = valuesForBorderRadiusCorner(style->borderBottomRightRadius(), style, renderer, renderView);
     RefPtr<CSSValueList> bottomLeftRadius = valuesForBorderRadiusCorner(style->borderBottomLeftRadius(), style, renderer, renderView);
 
     RefPtr<CSSValueList> horizontalRadii = CSSValueList::createSpaceSeparated();
     horizontalRadii->append(topLeftRadius->item(0));
     if (showHorizontalTopRight)
@@ skipping 2482 matching lines @@
     static const CSSPropertyID propertiesAfterSlashSeperator[3] = { CSSPropertyBackgroundSize, CSSPropertyBackgroundOrigin,
                                                                     CSSPropertyBackgroundClip };
 
     RefPtr<CSSValueList> list = CSSValueList::createSlashSeparated();
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesBeforeSlashSeperator, WTF_ARRAY_LENGTH(propertiesBeforeSlashSeperator))));
     list->append(valuesForShorthandProperty(StylePropertyShorthand(CSSPropertyBackground, propertiesAfterSlashSeperator, WTF_ARRAY_LENGTH(propertiesAfterSlashSeperator))));
     return list.release();
 }
 
 } // namespace WebCore