Simplify SVGAnimated* initialization

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

 /*
  * Copyright (C) 2004, 2005, 2007 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,
@@ skipping 16 matching lines @@
 namespace blink {
 
 inline SVGFEGaussianBlurElement::SVGFEGaussianBlurElement(Document& document)
     : SVGFilterPrimitiveStandardAttributes(SVGNames::feGaussianBlurTag,
                                            document),
       m_stdDeviation(
           SVGAnimatedNumberOptionalNumber::create(this,
                                                   SVGNames::stdDeviationAttr,
                                                   0,
                                                   0)),
-      m_in1(SVGAnimatedString::create(this,
-                                      SVGNames::inAttr,
-                                      SVGString::create())) {
+      m_in1(SVGAnimatedString::create(this, SVGNames::inAttr)) {
   addToPropertyMap(m_stdDeviation);
   addToPropertyMap(m_in1);
 }
 
 DEFINE_TRACE(SVGFEGaussianBlurElement) {
   visitor->trace(m_stdDeviation);
   visitor->trace(m_in1);
   SVGFilterPrimitiveStandardAttributes::trace(visitor);
 }
 
@@ skipping 28 matching lines @@
   //
   // => Clamp to non-negative.
   float stdDevX = std::max(0.0f, stdDeviationX()->currentValue()->value());
   float stdDevY = std::max(0.0f, stdDeviationY()->currentValue()->value());
   FilterEffect* effect = FEGaussianBlur::create(filter, stdDevX, stdDevY);
   effect->inputEffects().append(input1);
   return effect;
 }
 
 }  // namespace blink