Add StylePath and use it to store 'd' in ComputedStyle

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

Index: third_party/WebKit/Source/core/svg/SVGPathByteStream.h
diff --git a/third_party/WebKit/Source/core/svg/SVGPathByteStream.h b/third_party/WebKit/Source/core/svg/SVGPathByteStream.h
index e7bec8bfee91f42cbcbf55df61eaf24b33a7eaa9..0442474e3e47782f24f780c39bdf045689845661 100644
--- a/third_party/WebKit/Source/core/svg/SVGPathByteStream.h
+++ b/third_party/WebKit/Source/core/svg/SVGPathByteStream.h
@@ -21,7 +21,8 @@
 #define SVGPathByteStream_h
 
 #include "wtf/Noncopyable.h"
-#include "wtf/PassOwnPtr.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 
 namespace blink {
@@ -32,17 +33,17 @@ union ByteType {
     unsigned char bytes[sizeof(DataType)];
 };
 
-class SVGPathByteStream {
+class SVGPathByteStream : public RefCounted<SVGPathByteStream> {
     USING_FAST_MALLOC(SVGPathByteStream);
 public:
-    static PassOwnPtr<SVGPathByteStream> create()
+    static PassRefPtr<SVGPathByteStream> create()
     {
-        return adoptPtr(new SVGPathByteStream);
+        return adoptRef(new SVGPathByteStream);
     }
 
-    PassOwnPtr<SVGPathByteStream> copy() const
+    PassRefPtr<SVGPathByteStream> clone() const
     {
-        return adoptPtr(new SVGPathByteStream(m_data));
+        return adoptRef(new SVGPathByteStream(m_data));
     }
 
     typedef Vector<unsigned char> Data;