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

Source/core/layout/svg/LayoutSVGResourceContainer.h

 /*
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 50 matching lines @@
 
     void idChanged();
     void addClientLayer(Node*);
     void addClientLayer(Layer*);
     void removeClientLayer(Layer*);
 
     void invalidateCacheAndMarkForLayout(SubtreeLayoutScope* = 0);
 
     static void markForLayoutAndParentResourceInvalidation(LayoutObject*, bool needsLayout = true);
 
+    void clearInvalidationMask() { m_invalidationMask = 0; }
+
 protected:
     // When adding modes, make sure we don't overflow m_invalidationMask below.
     enum InvalidationMode {
         LayoutAndBoundariesInvalidation = 1 << 0,
         BoundariesInvalidation = 1 << 1,
         PaintInvalidation = 1 << 2,
         ParentOnlyInvalidation = 1 << 3
     };
 
     // Used from the invalidateClient/invalidateClients methods from classes, inheriting from us.
     void markAllClientsForInvalidation(InvalidationMode);
     void markAllClientLayersForInvalidation();
     void markClientForInvalidation(LayoutObject*, InvalidationMode);
 
-    void clearInvalidationMask() { m_invalidationMask = 0; }
-
     bool m_isInLayout;
 
 private:
     friend class SVGResourcesCache;
     void addClient(LayoutObject*);
     void removeClient(LayoutObject*);
 
     virtual void willBeDestroyed() override final;
     void registerResource();
 
@@ skipping 31 matching lines @@
 }
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGResourceContainer, isSVGResourceContainer());
 
 #define DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(thisType, typeName) \
     DEFINE_TYPE_CASTS(thisType, LayoutSVGResourceContainer, resource, resource->resourceType() == typeName, resource.resourceType() == typeName)
 
 }
 
 #endif