Allow assertions to be enabled in Blink Release builds.

Source/core/svg/SVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * 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
@@ skipping 969 matching lines @@
     if (m_targetElement)
         m_targetElement->setInstanceUpdatesBlocked(true);
 }
 
 SVGElement::InstanceUpdateBlocker::~InstanceUpdateBlocker()
 {
     if (m_targetElement)
         m_targetElement->setInstanceUpdatesBlocked(false);
 }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 bool SVGElement::isAnimatableAttribute(const QualifiedName& name) const
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, animatableAttributes, ());
 
     if (animatableAttributes.isEmpty()) {
         animatableAttributes.add(XLinkNames::hrefAttr);
         animatableAttributes.add(SVGNames::amplitudeAttr);
         animatableAttributes.add(SVGNames::azimuthAttr);
         animatableAttributes.add(SVGNames::baseFrequencyAttr);
         animatableAttributes.add(SVGNames::biasAttr);
@@ skipping 166 matching lines @@
     Element::trace(visitor);
 }
 
 const AtomicString& SVGElement::eventParameterName()
 {
     DEFINE_STATIC_LOCAL(const AtomicString, evtString, ("evt", AtomicString::ConstructFromLiteral));
     return evtString;
 }
 
 }