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

Source/core/svg/SVGFEDisplacementMapElement.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <oliver@nerget.com>
  *
  * 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 130 matching lines @@
     if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
         invalidate();
         return;
     }
 
     ASSERT_NOT_REACHED();
 }
 
 PassRefPtr<FilterEffect> SVGFEDisplacementMapElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 {
-    FilterEffect* input1 = filterBuilder->getEffectById(in1CurrentValue());
-    FilterEffect* input2 = filterBuilder->getEffectById(in2CurrentValue());
+    FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(in1CurrentValue()));
+    FilterEffect* input2 = filterBuilder->getEffectById(AtomicString(in2CurrentValue()));
 
     if (!input1 || !input2)
         return 0;
 
     RefPtr<FilterEffect> effect = FEDisplacementMap::create(filter, xChannelSelectorCurrentValue(), yChannelSelectorCurrentValue(), scaleCurrentValue());
     FilterEffectVector& inputEffects = effect->inputEffects();
     inputEffects.reserveCapacity(2);
     inputEffects.append(input1);
     inputEffects.append(input2);
     return effect.release();
 }
 
 }