Remove RefPtrHashMap

Source/wtf/HashTraits.h

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2011, 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 152 matching lines @@
         static PeekOutType peek(std::nullptr_t) { return 0; }
     };
 
     template<typename P> struct HashTraits<RefPtr<P> > : SimpleClassHashTraits<RefPtr<P> > {
         typedef std::nullptr_t EmptyValueType;
         static EmptyValueType emptyValue() { return nullptr; }
 
         static const bool hasIsEmptyValueFunction = true;
         static bool isEmptyValue(const RefPtr<P>& value) { return !value; }
 
-        typedef const RefPtr<P>& PeekInType;
+        typedef RefPtrValuePeeker<P> PeekInType;
         typedef RefPtr<P>* IteratorGetType;
         typedef const RefPtr<P>* IteratorConstGetType;
         typedef RefPtr<P>& IteratorReferenceType;
         typedef const RefPtr<P>& IteratorConstReferenceType;
         static IteratorReferenceType getToReferenceConversion(IteratorGetType x) { return *x; }
         static IteratorConstReferenceType getToReferenceConstConversion(IteratorConstGetType x) { return *x; }
 
         typedef PassRefPtr<P> PassInType;
         static void store(PassRefPtr<P> value, RefPtr<P>& storage) { storage = value; }
 
@@ skipping 124 matching lines @@
     };
 
 } // namespace WTF
 
 using WTF::HashTraits;
 using WTF::PairHashTraits;
 using WTF::NullableHashTraits;
 using WTF::SimpleClassHashTraits;
 
 #endif // WTF_HashTraits_h