Replace ENABLE(ASSERT) with DCHECK_IS_ON().

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

 /*
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@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 77 matching lines @@
   HeapHashSet<Member<SVGSVGElement>> m_timeContainers;
   using SVGElementSet = HeapHashSet<Member<SVGElement>>;
   SVGElementSet m_webAnimationsPendingSVGElements;
   HashMap<AtomicString, LayoutSVGResourceContainer*> m_resources;
   // Resources that are pending.
   HeapHashMap<AtomicString, Member<SVGPendingElements>> m_pendingResources;
   SVGResourcesCache m_resourcesCache;
   // Root SVG elements with relative length descendants.
   HeapHashSet<Member<SVGSVGElement>> m_relativeLengthSVGRoots;
   FloatPoint m_translate;
-#if ENABLE(ASSERT)
-  bool m_inRelativeLengthSVGRootsInvalidation;
+#if DCHECK_IS_ON()
+  bool m_inRelativeLengthSVGRootsInvalidation = false;
 #endif
 
  public:
   // This HashMap contains a list of pending resources. Pending resources, are
   // such which are referenced by any object in the SVG document, but do NOT
   // exist yet.
   // For instance, dynamically build gradients / patterns / clippers...
   void addPendingResource(const AtomicString& id, Element*);
   bool hasPendingResource(const AtomicString& id) const;
   bool isElementPendingResources(Element*) const;
   bool isElementPendingResource(Element*, const AtomicString& id) const;
   void clearHasPendingResourcesIfPossible(Element*);
   void removeElementFromPendingResources(Element*);
   SVGPendingElements* removePendingResource(const AtomicString& id);
 
   void serviceAnimations();
 };
 
 }  // namespace blink
 
 #endif