Count internal use of DOMImplementation::hasFeature() returning false

Source/core/svg/SVGAnimationElement.h

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Cameron McCormack <cam@mcc.id.au>
  * 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
@@ skipping 149 matching lines @@
     virtual void setTargetElement(SVGElement*) override;
     virtual void setAttributeName(const QualifiedName&) override;
 
     bool hasInvalidCSSAttributeType() const { return m_hasInvalidCSSAttributeType; }
 
     virtual void updateAnimationMode();
     void setAnimationMode(AnimationMode animationMode) { m_animationMode = animationMode; }
     void setCalcMode(CalcMode calcMode) { m_calcMode = calcMode; }
 
 private:
-    virtual bool isValid() const override final { return SVGTests::isValid(); }
+    virtual bool isValid() const override final { return SVGTests::isValid(document()); }
 
     virtual void animationAttributeChanged() override;
     void setAttributeType(const AtomicString&);
 
     void checkInvalidCSSAttributeType(SVGElement*);
 
     virtual bool calculateToAtEndOfDurationValue(const String& toAtEndOfDurationString) = 0;
     virtual bool calculateFromAndToValues(const String& fromString, const String& toString) = 0;
     virtual bool calculateFromAndByValues(const String& fromString, const String& byString) = 0;
     virtual void calculateAnimatedValue(float percent, unsigned repeatCount, SVGSMILElement* resultElement) = 0;
@@ skipping 24 matching lines @@
     String m_lastValuesAnimationFrom;
     String m_lastValuesAnimationTo;
     bool m_hasInvalidCSSAttributeType;
     CalcMode m_calcMode;
     AnimationMode m_animationMode;
 };
 
 } // namespace blink
 
 #endif // SVGAnimationElement_h