Simplify SVGAnimated* initialization

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

 /*
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * 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
@@ skipping 23 matching lines @@
                                      SVGNames::dxAttr,
                                      SVGNumber::create(2))),
       m_dy(SVGAnimatedNumber::create(this,
                                      SVGNames::dyAttr,
                                      SVGNumber::create(2))),
       m_stdDeviation(
           SVGAnimatedNumberOptionalNumber::create(this,
                                                   SVGNames::stdDeviationAttr,
                                                   2,
                                                   2)),
-      m_in1(SVGAnimatedString::create(this,
-                                      SVGNames::inAttr,
-                                      SVGString::create())) {
+      m_in1(SVGAnimatedString::create(this, SVGNames::inAttr)) {
   addToPropertyMap(m_dx);
   addToPropertyMap(m_dy);
   addToPropertyMap(m_stdDeviation);
   addToPropertyMap(m_in1);
 }
 
 DEFINE_TRACE(SVGFEDropShadowElement) {
   visitor->trace(m_dx);
   visitor->trace(m_dy);
   visitor->trace(m_stdDeviation);
@@ skipping 60 matching lines @@
   float stdDevX = std::max(0.0f, stdDeviationX()->currentValue()->value());
   float stdDevY = std::max(0.0f, stdDeviationY()->currentValue()->value());
   FilterEffect* effect = FEDropShadow::create(
       filter, stdDevX, stdDevY, m_dx->currentValue()->value(),
       m_dy->currentValue()->value(), color, opacity);
   effect->inputEffects().append(input1);
   return effect;
 }
 
 }  // namespace blink