Change RenderSVGResourceClipper's ClipperContext class into an enum

Source/core/rendering/svg/SVGRenderingContext.h

 /**
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2012 Zoltan Herczeg <zherczeg@webkit.org>.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 35 matching lines @@
     };
 
     // Does not start rendering.
     SVGRenderingContext()
         : m_renderingFlags(0)
         , m_object(0)
         , m_paintInfo(0)
         , m_savedContext(0)
         , m_filter(0)
         , m_clipper(0)
+        , m_clipperState(RenderSVGResourceClipper::ClipperNotApplied)
         , m_masker(0)
     {
     }
 
     SVGRenderingContext(RenderObject* object, PaintInfo& paintinfo, NeedsGraphicsContextSave needsGraphicsContextSave = DontSaveGraphicsContext)
         : m_renderingFlags(0)
         , m_object(0)
         , m_paintInfo(0)
         , m_savedContext(0)
         , m_filter(0)
         , m_clipper(0)
+        , m_clipperState(RenderSVGResourceClipper::ClipperNotApplied)
         , m_masker(0)
     {
         prepareToRenderSVGContent(object, paintinfo, needsGraphicsContextSave);
     }
 
     // Automatically finishes context rendering.
     ~SVGRenderingContext();
 
     // Used by all SVG renderers who apply clip/filter/etc. resources to the renderer content.
     void prepareToRenderSVGContent(RenderObject*, PaintInfo&, NeedsGraphicsContextSave = DontSaveGraphicsContext);
@@ skipping 27 matching lines @@
     // List of those flags which require actions during the destructor.
     const static int ActionsNeeded = RestoreGraphicsContext | EndOpacityLayer | PostApplyResources;
 
     int m_renderingFlags;
     RenderObject* m_object;
     PaintInfo* m_paintInfo;
     GraphicsContext* m_savedContext;
     IntRect m_savedPaintRect;
     RenderSVGResourceFilter* m_filter;
     RenderSVGResourceClipper* m_clipper;
-    ClipperContext m_clipperContext;
+    RenderSVGResourceClipper::ClipperState m_clipperState;
     RenderSVGResourceMasker* m_masker;
 };
 
 } // namespace blink
 
 #endif // SVGRenderingContext_h