Move Tuple to base namespace.

components/login/base_screen_handler_utils.h

 // Copyright (c) 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 COMPONENTS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_
 #define COMPONENTS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_
 
 #include <cstddef>
 #include <string>
 
@@ skipping 52 matching lines @@
 template <typename Arg, size_t index>
 typename UnwrapConstRef<Arg>::Type ParseArg(const base::ListValue* args) {
   typename UnwrapConstRef<Arg>::Type parsed;
   CHECK(GetArg(args, index, &parsed));
   return parsed;
 }
 
 template <typename... Args, size_t... Ns>
 inline void DispatchToCallback(const base::Callback<void(Args...)>& callback,
                                const base::ListValue* args,
-                               IndexSequence<Ns...> indexes) {
+                               base::IndexSequence<Ns...> indexes) {
   DCHECK(args);
   DCHECK_EQ(sizeof...(Args), args->GetSize());
 
   callback.Run(ParseArg<Args, Ns>(args)...);
 }
 
 template <typename... Args>
 void CallbackWrapper(const base::Callback<void(Args...)>& callback,
                      const base::ListValue* args) {
-  DispatchToCallback(callback, args, MakeIndexSequence<sizeof...(Args)>());
+  DispatchToCallback(callback, args,
+                     base::MakeIndexSequence<sizeof...(Args)>());
 }
 
 
 }  // namespace login
 
 #endif  // COMPONENTS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_