Allow assertions to be enabled in Blink Release builds.

Source/core/svg/SVGScriptElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 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,
@@ skipping 23 matching lines @@
 
 class SVGScriptElement FINAL
     : public SVGElement
     , public SVGURIReference
     , public ScriptLoaderClient {
 public:
     static PassRefPtrWillBeRawPtr<SVGScriptElement> create(Document&, bool wasInsertedByParser);
 
     ScriptLoader* loader() const { return m_loader.get(); }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     virtual bool isAnimatableAttribute(const QualifiedName&) const OVERRIDE;
 #endif
 
 private:
     SVGScriptElement(Document&, bool wasInsertedByParser, bool alreadyStarted);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void didNotifySubtreeInsertionsToDocument() OVERRIDE;
@@ skipping 24 matching lines @@
     virtual Timer<SVGElement>* svgLoadEventTimer() OVERRIDE { return &m_svgLoadEventTimer; }
 
 
     Timer<SVGElement> m_svgLoadEventTimer;
     OwnPtr<ScriptLoader> m_loader;
 };
 
 } // namespace WebCore
 
 #endif