Allow assertions to be enabled in Blink Release builds.

Source/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 994 matching lines @@
         if (!inlineRunStart)
             break;
 
         child = inlineRunEnd->nextSibling();
 
         RenderBlock* block = createAnonymousBlock();
         children()->insertChildNode(this, block, inlineRunStart);
         moveChildrenTo(block, inlineRunStart, child);
     }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     for (RenderObject *c = firstChild(); c; c = c->nextSibling())
         ASSERT(!c->isInline());
 #endif
 
     paintInvalidationForWholeRenderer();
 }
 
 void RenderBlock::removeLeftoverAnonymousBlock(RenderBlock* child)
 {
     ASSERT(child->isAnonymousBlock());
@@ skipping 3883 matching lines @@
 
     LayoutUnit oldClientAfterEdge = hasRenderOverflow() ? m_overflow->layoutClientAfterEdge() : clientLogicalBottom();
     computeOverflow(oldClientAfterEdge, true);
 
     if (hasOverflowClip())
         layer()->scrollableArea()->updateAfterOverflowRecalc();
 
     return !hasOverflowClip();
 }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 void RenderBlock::checkPositionedObjectsNeedLayout()
 {
     if (!gPositionedDescendantsMap)
         return;
 
     if (TrackedRendererListHashSet* positionedDescendantSet = positionedObjects()) {
         TrackedRendererListHashSet::const_iterator end = positionedDescendantSet->end();
         for (TrackedRendererListHashSet::const_iterator it = positionedDescendantSet->begin(); it != end; ++it) {
             RenderBox* currBox = *it;
             ASSERT(!currBox->needsLayout());
         }
     }
 }
 
+#endif
+
+#ifndef NDEBUG
+
 void RenderBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj) const
 {
     showRenderObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace WebCore