Remove more bits of the Oilpan tracing system

sky/engine/wtf/HashTable.h

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Levin <levin@chromium.org>
  *
  * 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 459 matching lines @@
         void clear();
 
         static bool isEmptyBucket(const ValueType& value) { return isHashTraitsEmptyValue<KeyTraits>(Extractor::extract(value)); }
         static bool isDeletedBucket(const ValueType& value) { return KeyTraits::isDeletedValue(Extractor::extract(value)); }
         static bool isEmptyOrDeletedBucket(const ValueType& value) { return HashTableHelper<ValueType, Extractor, KeyTraits>:: isEmptyOrDeletedBucket(value); }
 
         ValueType* lookup(KeyPeekInType key) { return lookup<IdentityTranslatorType, KeyPeekInType>(key); }
         template<typename HashTranslator, typename T> ValueType* lookup(T);
         template<typename HashTranslator, typename T> const ValueType* lookup(T) const;
 
-        void trace(typename Allocator::Visitor*);
-
 #if ENABLE(ASSERT)
         int64_t modifications() const { return m_modifications; }
         void registerModification() { m_modifications++; }
         // HashTable and collections that build on it do not support
         // modifications while there is an iterator in use. The exception is
         // ListHashSet, which has its own iterators that tolerate modification
         // of the underlying set.
         void checkModifications(int64_t mods) const { ASSERT(mods == m_modifications); }
 #else
         int64_t modifications() const { return 0; }
@@ skipping 755 matching lines @@
         CollectionIterator end(toBeRemoved.end());
         for (CollectionIterator it(toBeRemoved.begin()); it != end; ++it)
             collection.remove(*it);
     }
 
 } // namespace WTF
 
 #include "wtf/HashIterators.h"
 
 #endif // WTF_HashTable_h