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

third_party/WebKit/Source/core/svg/SVGAngleTearOff.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 24 matching lines @@
 #include "core/svg/properties/SVGPropertyTearOff.h"
 #include "platform/bindings/ScriptWrappable.h"
 
 namespace blink {
 
 class SVGAngleTearOff final : public SVGPropertyTearOff<SVGAngle>,
                               public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
-  static SVGAngleTearOff* Create(
-      SVGAngle* target,
-      SVGElement* context_element,
-      PropertyIsAnimValType property_is_anim_val,
-      const QualifiedName& attribute_name = QualifiedName::Null()) {
+  static SVGAngleTearOff* Create(SVGAngle* target,
+                                 SVGElement* context_element,
+                                 PropertyIsAnimValType property_is_anim_val,
+                                 const QualifiedName& attribute_name) {
     return new SVGAngleTearOff(target, context_element, property_is_anim_val,
                                attribute_name);
   }
+  static SVGAngleTearOff* CreateDetached();
 
   enum {
     kSvgAngletypeUnknown = SVGAngle::kSvgAngletypeUnknown,
     kSvgAngletypeUnspecified = SVGAngle::kSvgAngletypeUnspecified,
     kSvgAngletypeDeg = SVGAngle::kSvgAngletypeDeg,
     kSvgAngletypeRad = SVGAngle::kSvgAngletypeRad,
     kSvgAngletypeGrad = SVGAngle::kSvgAngletypeGrad
   };
 
   ~SVGAngleTearOff() override;
@@ skipping 29 matching lines @@
                   const QualifiedName&);
 
   bool HasExposedAngleUnit() {
     return Target()->UnitType() <= SVGAngle::kSvgAngletypeGrad;
   }
 };
 
 }  // namespace blink
 
 #endif  // SVGAngleTearOff_h