Allow assertions to be enabled in Blink Release builds.

Source/core/css/resolver/FontBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * 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.
  *
@@ skipping 423 matching lines @@
                 case CSSValueContextual:
                     contextualLigaturesState = FontDescription::EnabledLigaturesState;
                     break;
                 default:
                     ASSERT_NOT_REACHED();
                     break;
                 }
             }
         }
     }
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
     else {
         ASSERT_WITH_SECURITY_IMPLICATION(value->isPrimitiveValue());
         ASSERT(toCSSPrimitiveValue(value)->getValueID() == CSSValueNormal);
     }
 #endif
 
     scope.fontDescription().setCommonLigaturesState(commonLigaturesState);
     scope.fontDescription().setDiscretionaryLigaturesState(discretionaryLigaturesState);
     scope.fontDescription().setHistoricalLigaturesState(historicalLigaturesState);
     scope.fontDescription().setContextualLigaturesState(contextualLigaturesState);
@@ skipping 207 matching lines @@
     FontOrientation fontOrientation;
     NonCJKGlyphOrientation glyphOrientation;
     getFontAndGlyphOrientation(documentStyle, fontOrientation, glyphOrientation);
     fontDescription.setOrientation(fontOrientation);
     fontDescription.setNonCJKGlyphOrientation(glyphOrientation);
     documentStyle->setFontDescription(fontDescription);
     documentStyle->font().update(fontSelector);
 }
 
 }