[S.P.] Move svg mask painting to SVGMaskPainter

Source/core/layout/svg/LayoutSVGResourceMasker.h

 /*
  * Copyright (C) Research In Motion Limited 2009-2010. 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 13 matching lines @@
 #include "core/svg/SVGMaskElement.h"
 #include "core/svg/SVGUnitTypes.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/ImageBuffer.h"
 
 #include "wtf/HashMap.h"
 #include "wtf/OwnPtr.h"
 
 class SkPicture;
+class AffineTransform;
 
 namespace blink {
 
 class GraphicsContext;
 
 class LayoutSVGResourceMasker final : public LayoutSVGResourceContainer {
 public:
     explicit LayoutSVGResourceMasker(SVGMaskElement*);
     virtual ~LayoutSVGResourceMasker();
 
     virtual const char* renderName() const override { return "LayoutSVGResourceMasker"; }
 
     virtual void removeAllClientsFromCache(bool markForInvalidation = true) override;
     virtual void removeClientFromCache(LayoutObject*, bool markForInvalidation = true) override;
 
-    bool prepareEffect(LayoutObject*, GraphicsContext*);
-    void finishEffect(LayoutObject*, GraphicsContext*);
-
     FloatRect resourceBoundingBox(const LayoutObject*);
 
     SVGUnitTypes::SVGUnitType maskUnits() const { return toSVGMaskElement(element())->maskUnits()->currentValue()->enumValue(); }
     SVGUnitTypes::SVGUnitType maskContentUnits() const { return toSVGMaskElement(element())->maskContentUnits()->currentValue()->enumValue(); }
 
     static const LayoutSVGResourceType s_resourceType = MaskerResourceType;
     virtual LayoutSVGResourceType resourceType() const override { return s_resourceType; }
 
+    PassRefPtr<const SkPicture> getContentPicture(AffineTransform&, const FloatRect&);
+
 private:
     void calculateMaskContentPaintInvalidationRect();
-    void drawMaskForRenderer(GraphicsContext*, DisplayItemClient, const FloatRect& targetBoundingBox);
     PassRefPtr<const SkPicture> createContentPicture();
 
     RefPtr<const SkPicture> m_maskContentPicture;
     FloatRect m_maskContentBoundaries;
 };
 
 DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(LayoutSVGResourceMasker, MaskerResourceType);
 
 }
 
 #endif