Remove custom left overs from object grouping

third_party/WebKit/Source/bindings/core/v8/ScopedPersistent.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 69 matching lines @@
   bool isEmpty() const { return m_handle.IsEmpty(); }
   bool isWeak() const { return m_handle.IsWeak(); }
 
   virtual void set(v8::Isolate* isolate, v8::Local<T> handle) {
     m_handle.Reset(isolate, handle);
   }
 
   // Note: This is clear in the std::unique_ptr sense, not the v8::Handle sense.
   void clear() { m_handle.Reset(); }
 
-  void setReference(const v8::Persistent<v8::Object>& parent,
-                    v8::Isolate* isolate) {
-    isolate->SetReference(parent, m_handle);
-  }
-
   bool operator==(const ScopedPersistent<T>& other) {
     return m_handle == other.m_handle;
   }
 
   template <class S>
   bool operator==(const v8::Local<S> other) const {
     return m_handle == other;
   }
 
   ALWAYS_INLINE v8::Persistent<T>& get() { return m_handle; }
 
  private:
   v8::Persistent<T> m_handle;
 };
 
 }  // namespace blink
 
 #endif  // ScopedPersistent_h