Don't give 'pathLength' semantic errors special treatment

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/svg/SVGPathElement.h"
 
 #include "core/layout/svg/LayoutSVGPath.h"
-#include "core/svg/SVGDocumentExtensions.h"
 #include "core/svg/SVGMPathElement.h"
 #include "core/svg/SVGPathQuery.h"
 #include "core/svg/SVGPathUtilities.h"
 #include "core/svg/SVGPointTearOff.h"
 
 namespace blink {
 
 class SVGAnimatedPathLength final : public SVGAnimatedNumber {
 public:
     static PassRefPtrWillBeRawPtr<SVGAnimatedPathLength> create(SVGPathElement* contextElement)
     {
         return adoptRefWillBeNoop(new SVGAnimatedPathLength(contextElement));
     }
 
     SVGParsingError setBaseValueAsString(const String& value) override
     {
         SVGParsingError parseStatus = SVGAnimatedNumber::setBaseValueAsString(value);
-
-        ASSERT(contextElement());
         if (parseStatus == NoError && baseValue()->value() < 0)
-            contextElement()->document().accessSVGExtensions().reportError("A negative value for path attribute <pathLength> is not allowed");
+            parseStatus = NegativeValueForbiddenError;
         return parseStatus;
     }
 
 private:
     explicit SVGAnimatedPathLength(SVGPathElement* contextElement)
         : SVGAnimatedNumber(contextElement, SVGNames::pathLengthAttr, SVGNumber::create())
     {
     }
 };
 
@@ skipping 124 matching lines @@
     return InsertionDone;
 }
 
 void SVGPathElement::removedFrom(ContainerNode* rootParent)
 {
     SVGGeometryElement::removedFrom(rootParent);
     invalidateMPathDependencies();
 }
 
 } // namespace blink