Allow assertions to be enabled in Blink Release builds.

Source/wtf/LinkedHashSet.h

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, Benjamin Poulain <ikipou@gmail.com>
  *
  * 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,
@@ skipping 362 matching lines @@
     typedef typename LinkedHashSetType::Traits Traits;
 
     typedef const typename LinkedHashSetType::Value& ReferenceType;
     typedef const typename LinkedHashSetType::Value* PointerType;
 
     const Node* node() const { return static_cast<const Node*>(m_position); }
 
 protected:
     LinkedHashSetConstIterator(const LinkedHashSetNodeBase* position, const LinkedHashSetType* container)
         : m_position(position)
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
         , m_container(container)
         , m_containerModifications(container->modifications())
 #endif
     {
     }
 
 public:
     PointerType get() const
     {
         checkModifications();
@@ skipping 25 matching lines @@
     {
         return m_position == other.m_position;
     }
     bool operator!=(const LinkedHashSetConstIterator& other) const
     {
         return m_position != other.m_position;
     }
 
 private:
     const LinkedHashSetNodeBase* m_position;
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
     void checkModifications() const { m_container->checkModifications(m_containerModifications); }
     const LinkedHashSetType* m_container;
     int64_t m_containerModifications;
 #else
     void checkModifications() const { }
 #endif
     template<typename T, typename U, typename V, typename W> friend class LinkedHashSet;
     friend class LinkedHashSetIterator<LinkedHashSetType>;
 };
 
@@ skipping 267 matching lines @@
 struct NeedsTracing<LinkedHashSet<T, U, V> > {
     static const bool value = false;
 };
 #endif
 
 }
 
 using WTF::LinkedHashSet;
 
 #endif /* WTF_LinkedHashSet_h */