Allow assertions to be enabled in Blink Release builds.

Source/core/rendering/RenderText.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple 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 22 matching lines @@
 
 class AbstractInlineTextBox;
 class InlineTextBox;
 
 class RenderText : public RenderObject {
 public:
     // FIXME: If the node argument is not a Text node or the string argument is
     // not the content of the Text node, updating text-transform property
     // doesn't re-transform the string.
     RenderText(Node*, PassRefPtr<StringImpl>);
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     virtual ~RenderText();
 #endif
 
     virtual const char* renderName() const OVERRIDE;
 
     virtual bool isTextFragment() const;
     virtual bool isWordBreak() const;
 
     virtual PassRefPtr<StringImpl> originalText() const;
 
@@ skipping 164 matching lines @@
 inline UChar RenderText::characterAt(unsigned i) const
 {
     if (i >= textLength())
         return 0;
 
     return uncheckedCharacterAt(i);
 }
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderText, isText());
 
-#ifdef NDEBUG
+#if !ENABLE(ASSERT)
 inline void RenderText::checkConsistency() const
 {
 }
 #endif
 
 void applyTextTransform(const RenderStyle*, String&, UChar);
 
 } // namespace WebCore
 
 #endif // RenderText_h