Make calls to AtomicString(const String&) explicit in svg/

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 144 matching lines @@
 
     if (stdDeviationXCurrentValue() < 0 || stdDeviationYCurrentValue() < 0)
         return 0;
 
     ASSERT(renderer->style());
     const SVGRenderStyle* svgStyle = renderer->style()->svgStyle();
 
     Color color = svgStyle->floodColor();
     float opacity = svgStyle->floodOpacity();
 
-    FilterEffect* input1 = filterBuilder->getEffectById(in1CurrentValue());
+    FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(in1CurrentValue()));
     if (!input1)
         return 0;
 
     RefPtr<FilterEffect> effect = FEDropShadow::create(filter, stdDeviationXCurrentValue(), stdDeviationYCurrentValue(), dxCurrentValue(), dyCurrentValue(), color, opacity);
     effect->inputEffects().append(input1);
     return effect.release();
 }
 
 }