SVGPath object "mutability" cleanup

third_party/WebKit/Source/core/svg/SVGPath.h

 /*
  * Copyright (C) 2014 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 29 matching lines @@
 class SVGPathByteStream;
 
 class SVGPath : public SVGPropertyBase {
 public:
     typedef void TearOffType;
 
     static PassRefPtrWillBeRawPtr<SVGPath> create()
     {
         return adoptRefWillBeNoop(new SVGPath());
     }
+    static PassRefPtrWillBeRawPtr<SVGPath> create(PassOwnPtr<SVGPathByteStream> pathByteStream)
+    {
+        return adoptRefWillBeNoop(new SVGPath(pathByteStream));
+    }
 
     ~SVGPath() override;
 
     const Path& path() const;
 
     const SVGPathByteStream& byteStream() const;
-    SVGPathByteStream& mutableByteStream();
 
     // SVGPropertyBase:
     PassRefPtrWillBeRawPtr<SVGPath> clone() const;
     PassRefPtrWillBeRawPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
     String valueAsString() const override;
     void setValueAsString(const String&, ExceptionState&);
 
     void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) override;
     void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> fromValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*) override;
     float calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement*) override;
 
     static AnimatedPropertyType classType() { return AnimatedPath; }
 
 private:
     SVGPath();
     explicit SVGPath(PassOwnPtr<SVGPathByteStream>);
 
     SVGPathByteStream& ensureByteStream();
-    void byteStreamWillChange();
+    void byteStreamChanged();
+    void setValueAsByteStream(PassOwnPtr<SVGPathByteStream>);
 
     OwnPtr<SVGPathByteStream> m_byteStream;
     mutable OwnPtr<Path> m_cachedPath;
 };
 
 DEFINE_SVG_PROPERTY_TYPE_CASTS(SVGPath);
 
 } // namespace blink
 
 #endif