Mojo: Move waiting APIs to public library

mojo/public/cpp/system/functions.h

 // Copyright 2014 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.
 
 // This file provides a C++ wrapping around the standalone functions of the Mojo
 // C API, replacing the prefix of "Mojo" with a "mojo" namespace.
 //
 // Please see "mojo/public/c/system/functions.h" for complete documentation of
 // the API.
 
 #ifndef MOJO_PUBLIC_CPP_SYSTEM_FUNCTIONS_H_
 #define MOJO_PUBLIC_CPP_SYSTEM_FUNCTIONS_H_
 
 #include "mojo/public/c/system/functions.h"
 
 namespace mojo {
 
 // Returns the current |MojoTimeTicks| value. See |MojoGetTimeTicksNow()| for
 // complete documentation.
 inline MojoTimeTicks GetTimeTicksNow() {
   return MojoGetTimeTicksNow();
 }
 
-// The C++ wrappers for |MojoWait()| and |MojoWaitMany()| are defined in
-// "handle.h".
-// TODO(ggowan): Consider making the C and C++ APIs more consistent in the
-// organization of the functions into different header files (since in the C
-// API, those functions are defined in "functions.h").
-
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_SYSTEM_FUNCTIONS_H_