WIP: base::Bind for rvalue references.

base/callback.h

 // Copyright (c) 2012 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_H_
 #define BASE_CALLBACK_H_
 
 #include "base/callback_forward.h"
 #include "base/callback_internal.h"
 #include "base/template_util.h"
@@ skipping 370 matching lines @@
     PolymorphicInvoke invoke_func =
         &internal::BindState<Runnable, BindRunType, BoundArgsType>
             ::InvokerType::Run;
     polymorphic_invoke_ = reinterpret_cast<InvokeFuncStorage>(invoke_func);
   }
 
   bool Equals(const Callback& other) const {
     return CallbackBase::Equals(other);
   }
 
-  R Run(typename internal::CallbackParamTraits<Args>::ForwardType... args)
-      const {
+  template <typename... RunArgs>
+  R Run(RunArgs&&... args) const {
     PolymorphicInvoke f =
         reinterpret_cast<PolymorphicInvoke>(polymorphic_invoke_);
 
-    return f(bind_state_.get(), internal::CallbackForward(args)...);
+    return f(bind_state_.get(), std::forward<RunArgs>(args)...);
   }
 
  private:
-  typedef R(*PolymorphicInvoke)(
+  typedef R (*PolymorphicInvoke)(
       internal::BindStateBase*,
       typename internal::CallbackParamTraits<Args>::ForwardType...);
 };
 
 // Syntactic sugar to make Callback<void(void)> easier to declare since it
 // will be used in a lot of APIs with delayed execution.
 typedef Callback<void(void)> Closure;
 
 }  // namespace base
 
 #endif  // BASE_CALLBACK_H_