Remove RefPtrHashMap

Source/wtf/RefPtr.h

 /*
  *  Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 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 170 matching lines @@
     template<typename T, typename U> inline RefPtr<T> static_pointer_cast(const RefPtr<U>& p)
     {
         return RefPtr<T>(static_cast<T*>(p.get()));
     }
 
     template<typename T> inline T* getPtr(const RefPtr<T>& p)
     {
         return p.get();
     }
 
+    template<typename T> class RefPtrValuePeeker {
+    public:
+        ALWAYS_INLINE RefPtrValuePeeker(T* p): m_ptr(p) { }
+        template<typename U> RefPtrValuePeeker(const RefPtr<U>& p): m_ptr(p.get()) { }
+        template<typename U> RefPtrValuePeeker(const PassRefPtr<U>& p): m_ptr(p.get()) { }
+        ALWAYS_INLINE operator T*() const { return m_ptr; }
+    private:
+        T* m_ptr;
+    };
+
 } // namespace WTF
 
 using WTF::RefPtr;
 using WTF::static_pointer_cast;
 
 #endif // WTF_RefPtr_h