Make ifdefs consistent in WebKit/Source/core/

third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 4455 matching lines @@
     if (lastRootBoxWithChildren->getLogicalEndBoxWithNode(logicallyLastBox))
       return PositionWithAffinity(positionForBox(logicallyLastBox, false));
   }
 
   // Can't reach this. We have a root line box, but it has no kids.
   // FIXME: This should ASSERT_NOT_REACHED(), but clicking on placeholder text
   // seems to hit this code path.
   return createPositionWithAffinity(0);
 }
 
-#ifndef NDEBUG
+#if DCHECK_IS_ON()
 
 void LayoutBlockFlow::showLineTreeAndMark(const InlineBox* markedBox1,
                                           const char* markedLabel1,
                                           const InlineBox* markedBox2,
                                           const char* markedLabel2,
                                           const LayoutObject* obj) const {
   showLayoutObject();
   for (const RootInlineBox* root = firstRootBox(); root;
        root = root->nextRootBox())
     root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2,
@@ skipping 64 matching lines @@
   return LayoutBlock::invalidatePaintIfNeeded(paintInvalidationState);
 }
 
 void LayoutBlockFlow::invalidateDisplayItemClients(
     PaintInvalidationReason invalidationReason) const {
   BlockFlowPaintInvalidator(*this).invalidateDisplayItemClients(
       invalidationReason);
 }
 
 }  // namespace blink