Clean up creation of "detached" SVG* data type objects

third_party/WebKit/Source/core/svg/SVGPointTearOff.cpp

 /*
  * 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 46 matching lines @@
   if (IsImmutable()) {
     ThrowReadOnly(exception_state);
     return;
   }
   Target()->SetY(f);
   CommitChange();
 }
 
 SVGPointTearOff* SVGPointTearOff::matrixTransform(SVGMatrixTearOff* matrix) {
   FloatPoint point = Target()->MatrixTransform(matrix->Value());
-  return SVGPointTearOff::Create(SVGPoint::Create(point), 0,
-                                 kPropertyIsNotAnimVal);
+  return CreateDetached(point);
+}
+
+SVGPointTearOff* SVGPointTearOff::CreateDetached(const FloatPoint& point) {
+  return Create(SVGPoint::Create(point), nullptr, kPropertyIsNotAnimVal,
+                QualifiedName::Null());
 }
 
 DEFINE_TRACE_WRAPPERS(SVGPointTearOff) {
   visitor->TraceWrappers(contextElement());
 }
 
 }  // namespace blink