Remove CallbackParamTraits and CallbackForward

base/callback_list.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_CALLBACK_LIST_H_
 #define BASE_CALLBACK_LIST_H_
 
 #include <list>
 
 #include "base/callback.h"
-#include "base/callback_internal.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 
 // OVERVIEW:
 //
 // A container for a list of callbacks.  Unlike a normal STL vector or list,
 // this container can be modified during iteration without invalidating the
 // iterator. It safely handles the case of a callback removing itself
@@ skipping 182 matching lines @@
 template <typename Sig> class CallbackList;
 
 template <typename... Args>
 class CallbackList<void(Args...)>
     : public internal::CallbackListBase<Callback<void(Args...)> > {
  public:
   typedef Callback<void(Args...)> CallbackType;
 
   CallbackList() {}
 
-  void Notify(
-      typename internal::CallbackParamTraits<Args>::ForwardType... args) {
+  template <typename... RunArgs>
+  void Notify(RunArgs&&... args) {
     typename internal::CallbackListBase<CallbackType>::Iterator it =
         this->GetIterator();
     CallbackType* cb;
     while ((cb = it.GetNext()) != NULL) {
       cb->Run(args...);
     }
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CallbackList);
 };
 
 }  // namespace base
 
 #endif  // BASE_CALLBACK_LIST_H_