Make ifdefs consistent in WebKit/Source/core/

third_party/WebKit/Source/core/layout/LayoutObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 304 matching lines @@
     SECURITY_DCHECK(!needsLayout());
   }
 
   void assertSubtreeIsLaidOut() const {
     for (const LayoutObject* layoutObject = this; layoutObject;
          layoutObject = layoutObject->nextInPreOrder())
       layoutObject->assertLaidOut();
   }
 
   void assertClearedPaintInvalidationFlags() const {
-#ifndef NDEBUG
+#if DCHECK_IS_ON()
     if (paintInvalidationStateIsDirty()) {
       showLayoutTreeForThis();
       ASSERT_NOT_REACHED();
     }
 #endif
   }
 
   void assertSubtreeClearedPaintInvalidationFlags() const {
     for (const LayoutObject* layoutObject = this; layoutObject;
          layoutObject = layoutObject->nextInPreOrder())
@@ skipping 2306 matching lines @@
 CORE_EXPORT void showLineTree(const blink::LayoutObject*);
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1,
                                 const blink::LayoutObject* object2);
 
 #endif
 
 #endif  // LayoutObject_h