Rename default -> initial style and use singletons.

Source/core/layout/style/SVGLayoutStyle.h

 /*
     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005 Rob Buis <buis@kde.org>
     Copyright (C) 2005, 2006 Apple Computer, Inc.
     Copyright (C) Research In Motion Limited 2010. 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 429 matching lines @@
     DataRef<StyleStrokeData> stroke;
     DataRef<StyleInheritedResourceData> inheritedResources;
 
     // non-inherited attributes
     DataRef<StyleStopData> stops;
     DataRef<StyleMiscData> misc;
     DataRef<StyleLayoutData> layout;
     DataRef<StyleResourceData> resources;
 
 private:
-    enum CreateDefaultType { CreateDefault };
+    enum CreateInitialType { CreateInitial };
 
     SVGLayoutStyle();
     SVGLayoutStyle(const SVGLayoutStyle&);
-    SVGLayoutStyle(CreateDefaultType); // Used to create the default style.
+    SVGLayoutStyle(CreateInitialType); // Used to create the initial style singleton.
 
     bool diffNeedsLayoutAndPaintInvalidation(const SVGLayoutStyle* other) const;
     bool diffNeedsPaintInvalidation(const SVGLayoutStyle* other) const;
 
     void setBitDefaults()
     {
         svg_inherited_flags._clipRule = initialClipRule();
         svg_inherited_flags._colorRendering = initialColorRendering();
         svg_inherited_flags._fillRule = initialFillRule();
         svg_inherited_flags._shapeRendering = initialShapeRendering();
@@ skipping 13 matching lines @@
         svg_noninherited_flags.f._baselineShift = initialBaselineShift();
         svg_noninherited_flags.f._vectorEffect = initialVectorEffect();
         svg_noninherited_flags.f.bufferedRendering = initialBufferedRendering();
         svg_noninherited_flags.f.maskType = initialMaskType();
     }
 };
 
 } // namespace blink
 
 #endif // SVGLayoutStyle_h