[SVG] Re-enable experimental PathOpsSVGClipping support

Source/platform/graphics/Path.h

 /*
  * Copyright (C) 2003, 2006, 2009 Apple Inc. All rights reserved.
  *               2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2007-2008 Torch Mobile, Inc.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 55 matching lines @@
 typedef void (*PathApplierFunction)(void* info, const PathElement*);
 
 class PLATFORM_EXPORT Path {
     WTF_MAKE_FAST_ALLOCATED(Path);
 public:
     Path();
     ~Path();
 
     Path(const Path&);
     Path& operator=(const Path&);
+    Path& operator=(const SkPath&);
     bool operator==(const Path&) const;
 
     bool contains(const FloatPoint&, WindRule = RULE_NONZERO) const;
     bool strokeContains(const FloatPoint&, const StrokeData&) const;
     FloatRect boundingRect() const;
     FloatRect strokeBoundingRect(const StrokeData&) const;
 
     float length() const;
     FloatPoint pointAtLength(float length, bool& ok) const;
     bool pointAndNormalAtLength(float length, FloatPoint&, float&) const;
@@ skipping 70 matching lines @@
     SkPath m_path;
 };
 
 #if ENABLE(ASSERT)
 PLATFORM_EXPORT bool ellipseIsRenderable(float startAngle, float endAngle);
 #endif
 
 } // namespace blink
 
 #endif