Allow assertions to be enabled in Blink Release builds.

Source/core/dom/TreeScope.cpp

 /*
  * Copyright (C) 2011 Google Inc. All Rights Reserved.
  * Copyright (C) 2012 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 463 matching lines @@
     listTreeScopes(nodeB, treeScopesB);
 
     size_t indexA = treeScopesA.size();
     size_t indexB = treeScopesB.size();
 
     for (; indexA > 0 && indexB > 0 && treeScopesA[indexA - 1] == treeScopesB[indexB - 1]; --indexA, --indexB) { }
 
     return treeScopesA[indexA] == treeScopesB[indexB] ? treeScopesA[indexA] : 0;
 }
 
-#if SECURITY_ASSERT_ENABLED && !ENABLE(OILPAN)
+#if ENABLE(SECURITY_ASSERT) && !ENABLE(OILPAN)
 bool TreeScope::deletionHasBegun()
 {
     return rootNode().m_deletionHasBegun;
 }
 
 void TreeScope::beginDeletion()
 {
     rootNode().m_deletionHasBegun = true;
 }
 #endif
@@ skipping 48 matching lines @@
     visitor->trace(m_document);
     visitor->trace(m_parentTreeScope);
     visitor->trace(m_idTargetObserverRegistry);
     visitor->trace(m_selection);
     visitor->trace(m_elementsById);
     visitor->trace(m_imageMapsByName);
     visitor->trace(m_labelsByForAttribute);
 }
 
 } // namespace WebCore