Allow assertions to be enabled in Blink Release builds.

Source/core/svg/SVGUseElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012 University of Szeged
  * Copyright (C) 2012 Renata Hodovan <reni@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 97 matching lines @@
     } else if (name == SVGNames::heightAttr) {
         m_height->setBaseValueAsString(value, parseError);
     } else if (SVGURIReference::parseAttribute(name, value, parseError)) {
     } else {
         ASSERT_NOT_REACHED();
     }
 
     reportAttributeParsingError(parseError, name, value);
 }
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
 static inline bool isWellFormedDocument(Document* document)
 {
     if (document->isXMLDocument())
         return static_cast<XMLDocumentParser*>(document->parser())->wellFormed();
     return true;
 }
 #endif
 
 Node::InsertionNotificationRequest SVGUseElement::insertedInto(ContainerNode* rootParent)
 {
@@ skipping 638 matching lines @@
         m_resource->addClient(this);
 }
 
 void SVGUseElement::trace(Visitor* visitor)
 {
     visitor->trace(m_targetElementInstance);
     SVGGraphicsElement::trace(visitor);
 }
 
 }