Allow assertions to be enabled in Blink Release builds.

Source/core/rendering/svg/RenderSVGText.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved.
  * Copyright (C) 2012 Google Inc.
  *
@@ skipping 178 matching lines @@
 
             if (previous)
                 m_layoutAttributesBuilder.buildLayoutAttributesForTextRenderer(previous->context());
             m_layoutAttributesBuilder.buildLayoutAttributesForTextRenderer(attributes->context());
             if (next)
                 m_layoutAttributesBuilder.buildLayoutAttributesForTextRenderer(next->context());
             break;
         }
     }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     // Verify that m_layoutAttributes only differs by a maximum of one entry.
     for (size_t i = 0; i < size; ++i)
         ASSERT(m_layoutAttributes.find(newLayoutAttributes[i]) != kNotFound || newLayoutAttributes[i] == attributes);
 #endif
 
     m_layoutAttributes = newLayoutAttributes;
 }
 
 static inline void checkLayoutAttributesConsistency(RenderSVGText* text, Vector<SVGTextLayoutAttributes*>& expectedLayoutAttributes)
 {
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     Vector<SVGTextLayoutAttributes*> newLayoutAttributes;
     collectLayoutAttributes(text, newLayoutAttributes);
     ASSERT(newLayoutAttributes == expectedLayoutAttributes);
 #endif
 }
 
 void RenderSVGText::willBeDestroyed()
 {
     m_layoutAttributes.clear();
     m_layoutAttributesBuilder.clearTextPositioningElements();
@@ skipping 307 matching lines @@
     SVGResourcesCache::clientWillBeRemovedFromTree(child);
 
     Vector<SVGTextLayoutAttributes*, 2> affectedAttributes;
     FontCachePurgePreventer fontCachePurgePreventer;
     subtreeChildWillBeRemoved(child, affectedAttributes);
     RenderSVGBlock::removeChild(child);
     subtreeChildWasRemoved(affectedAttributes);
 }
 
 }