Simplify SVGAnimated* initialization

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

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/svg/SVGFEMergeNodeElement.h"
 
 #include "core/svg/SVGFilterPrimitiveStandardAttributes.h"
 
 namespace blink {
 
 inline SVGFEMergeNodeElement::SVGFEMergeNodeElement(Document& document)
     : SVGElement(SVGNames::feMergeNodeTag, document),
-      m_in1(SVGAnimatedString::create(this,
-                                      SVGNames::inAttr,
-                                      SVGString::create())) {
+      m_in1(SVGAnimatedString::create(this, SVGNames::inAttr)) {
   addToPropertyMap(m_in1);
 }
 
 DEFINE_TRACE(SVGFEMergeNodeElement) {
   visitor->trace(m_in1);
   SVGElement::trace(visitor);
 }
 
 DEFINE_NODE_FACTORY(SVGFEMergeNodeElement)
 
 void SVGFEMergeNodeElement::svgAttributeChanged(const QualifiedName& attrName) {
   if (attrName == SVGNames::inAttr) {
     SVGElement::InvalidationGuard invalidationGuard(this);
     invalidateFilterPrimitiveParent(this);
     return;
   }
 
   SVGElement::svgAttributeChanged(attrName);
 }
 
 }  // namespace blink