Replace ASSERT with DCHECK in core/svg/

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 50 matching lines @@
     return;
   }
 
   SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
 }
 
 FilterEffect* SVGFEGaussianBlurElement::build(SVGFilterBuilder* filterBuilder,
                                               Filter* filter) {
   FilterEffect* input1 = filterBuilder->getEffectById(
       AtomicString(m_in1->currentValue()->value()));
-  ASSERT(input1);
+  DCHECK(input1);
 
   // "A negative value or a value of zero disables the effect of the given
   // filter primitive (i.e., the result is the filter input image)."
   // (https://drafts.fxtf.org/filters/#element-attrdef-fegaussianblur-stddeviation)
   //
   // => 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().push_back(input1);
   return effect;
 }
 
 }  // namespace blink