Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/core/svg/SVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2009, 2014 Apple Inc. 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.
  *
@@ skipping 251 matching lines @@
   void willRecalcStyle(StyleRecalcChange) override;
 
   void buildPendingResourcesIfNeeded();
 
   HeapHashSet<WeakMember<SVGElement>> m_elementsWithRelativeLengths;
 
   typedef HeapHashMap<QualifiedName, Member<SVGAnimatedPropertyBase>>
       AttributeToPropertyMap;
   AttributeToPropertyMap m_attributeToPropertyMap;
 
-#if ENABLE(ASSERT)
-  bool m_inRelativeLengthClientsInvalidation;
+#if DCHECK_IS_ON()
+  bool m_inRelativeLengthClientsInvalidation = false;
 #endif
 
   Member<SVGElementRareData> m_SVGRareData;
   Member<SVGAnimatedString> m_className;
 };
 
 struct SVGAttributeHashTranslator {
   STATIC_ONLY(SVGAttributeHashTranslator);
   static unsigned hash(const QualifiedName& key) {
     if (key.hasPrefix()) {
@@ skipping 46 matching lines @@
   inline bool isElementOfType<const thisType>(const SVGElement& element) { \
     return is##thisType(element);                                          \
   }                                                                        \
   DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(thisType)
 
 }  // namespace blink
 
 #include "core/SVGElementTypeHelpers.h"
 
 #endif  // SVGElement_h