Use outlineBox if we have an outline or shadow

Source/core/rendering/style/RenderStyle.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 890 matching lines @@
             -floatValueForLength(transformOriginY(), boundingBox.height()) - offsetY,
             -transformOriginZ());
     }
 }
 
 void RenderStyle::setTextShadow(PassRefPtr<ShadowList> s)
 {
     rareInheritedData.access()->textShadow = s;
 }
 
+bool RenderStyle::hasBoxShadow() const
+{
+    return boxShadow() && boxShadow()->shadows().size() > 0;
+}
+
 void RenderStyle::setBoxShadow(PassRefPtr<ShadowList> s)
 {
     rareNonInheritedData.access()->m_boxShadow = s;
 }
 
 static RoundedRect::Radii calcRadiiFor(const BorderData& border, IntSize size)
 {
     return RoundedRect::Radii(
         IntSize(valueForLength(border.topLeft().width(), size.width()),
             valueForLength(border.topLeft().height(), size.height())),
@@ skipping 698 matching lines @@
 }
 
 void RenderStyle::setBorderImageOutset(const BorderImageLengthBox& outset)
 {
     if (surround->border.m_image.outset() == outset)
         return;
     surround.access()->border.m_image.setOutset(outset);
 }
 
 } // namespace WebCore