Start removing the double-negative !ASSERT_DISABLED

Source/core/dom/TreeShared.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2012 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 58 matching lines @@
 
     void deref()
     {
         ASSERT(isMainThread());
         ASSERT(m_refCount > 0);
         ASSERT_WITH_SECURITY_IMPLICATION(!m_deletionHasBegun);
         ASSERT(!m_inRemovedLastRefFunction);
         ASSERT(!m_adoptionIsRequired);
         NodeType* thisNode = static_cast<NodeType*>(this);
         if (!--m_refCount && !thisNode->hasTreeSharedParent()) {
-#if !ASSERT_DISABLED
+#if ASSERT_ENABLED
             m_inRemovedLastRefFunction = true;
 #endif
             thisNode->removedLastRef();
         }
     }
 
     int refCount() const { return m_refCount; }
 
 private:
     int m_refCount;
@@ skipping 11 matching lines @@
 #endif
 };
 
 #if SECURITY_ASSERT_ENABLED
 template<typename NodeType> inline void adopted(TreeShared<NodeType>* object)
 {
     if (!object)
         return;
 
     ASSERT_WITH_SECURITY_IMPLICATION(!object->m_deletionHasBegun);
-#if !ASSERT_DISABLED
+#if ASSERT_ENABLED
     ASSERT(!object->m_inRemovedLastRefFunction);
     object->m_adoptionIsRequired = false;
 #endif
 }
 #endif
 
 }
 
 #endif // TreeShared.h