Explicitly Document base/bind_helpers.h Comes with base/bind.h

base/bind.h

 // Copyright (c) 2011 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_BIND_H_
 #define BASE_BIND_H_
 
 #include "base/bind_internal.h"
 
 // -----------------------------------------------------------------------------
 // Usage documentation
 // -----------------------------------------------------------------------------
 //
 // See //docs/callback.md for documentation.
-//
+// It's not necessary to include base/bind_helpers.h in your implementation.

[dcheng, 2016/10/18 19:30:56]

Nit: "your implementation" feels a little vague here: this can be read to mean
the implementation of base::Bind.

[robliao, 2016/10/18 19:35:17]

Updated to "your file".

+// Those functions are assumed to be part of this library.
 //
 // -----------------------------------------------------------------------------
 // Implementation notes
 // -----------------------------------------------------------------------------
 //
 // If you're reading the implementation, before proceeding further, you should
 // read the top comment of base/bind_internal.h for a definition of common
 // terms and concepts.
 
 namespace base {
@@ skipping 48 matching lines @@
 template <typename Functor, typename... Args>
 inline Callback<MakeUnboundRunType<Functor, Args...>>
 Bind(Functor&& functor, Args&&... args) {
   return BindRepeating(std::forward<Functor>(functor),
                        std::forward<Args>(args)...);
 }
 
 }  // namespace base
 
 #endif  // BASE_BIND_H_