Change SigninClient::CreateGaiaAuthFetcher return type to unique_ptr

google_apis/gaia/ubertoken_fetcher.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.
 
 #ifndef GOOGLE_APIS_GAIA_UBERTOKEN_FETCHER_H_
 #define GOOGLE_APIS_GAIA_UBERTOKEN_FETCHER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 10 matching lines @@
 //
 // This class can handle one request at a time.
 
 class GaiaAuthFetcher;
 class GoogleServiceAuthError;
 
 namespace net {
 class URLRequestContextGetter;
 }
 
-typedef base::Callback<GaiaAuthFetcher*(GaiaAuthConsumer*,
-                                        const std::string&,
-                                        net::URLRequestContextGetter*)>
-    GaiaAuthFetcherFactory;
+using GaiaAuthFetcherFactory = base::Callback<std::unique_ptr<GaiaAuthFetcher>(
+    GaiaAuthConsumer*,
+    const std::string&,
+    net::URLRequestContextGetter*)>;
 
 // Callback for the |UbertokenFetcher| class.
 class UbertokenConsumer {
  public:
   UbertokenConsumer() {}
   virtual ~UbertokenConsumer() {}
   virtual void OnUbertokenSuccess(const std::string& token) {}
   virtual void OnUbertokenFailure(const GoogleServiceAuthError& error) {}
 };
 
@@ skipping 48 matching lines @@
   std::string account_id_;
   std::string access_token_;
   int retry_number_;
   base::OneShotTimer retry_timer_;
   bool second_access_token_request_;
 
   DISALLOW_COPY_AND_ASSIGN(UbertokenFetcher);
 };
 
 #endif  // GOOGLE_APIS_GAIA_UBERTOKEN_FETCHER_H_