Change SigninClient::CreateGaiaAuthFetcher return type to unique_ptr

components/signin/core/browser/signin_client.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 COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_CLIENT_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_CLIENT_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/callback_list.h"
 #include "base/time/time.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/signin/core/browser/account_info.h"
 #include "components/signin/core/browser/webdata/token_web_data.h"
 #include "google_apis/gaia/gaia_auth_fetcher.h"
 #include "net/cookies/cookie_store.h"
 #include "url/gurl.h"
 
@@ skipping 91 matching lines @@
   // Adds an observer to listen for changes to the state of sign in cookie
   // settings.
   virtual void AddContentSettingsObserver(
       content_settings::Observer* observer) = 0;
   virtual void RemoveContentSettingsObserver(
       content_settings::Observer* observer) = 0;
 
   // Execute |callback| if and when there is a network connection.
   virtual void DelayNetworkCall(const base::Closure& callback) = 0;
 
-  // Creates and returns a new platform-specific GaiaAuthFetcher. It is the
-  // responsability of the caller to delete the returned object.
-  virtual GaiaAuthFetcher* CreateGaiaAuthFetcher(
+  // Creates a new platform-specific GaiaAuthFetcher.
+  virtual std::unique_ptr<GaiaAuthFetcher> CreateGaiaAuthFetcher(
       GaiaAuthConsumer* consumer,
       const std::string& source,
       net::URLRequestContextGetter* getter) = 0;
 
   // Called once the credentials has been copied to another SigninManager.
   virtual void AfterCredentialsCopied() {}
 
  protected:
   // Returns device id that is scoped to single signin.
   // Stores the ID in the kGoogleServicesSigninScopedDeviceId pref.
   std::string GetOrCreateScopedDeviceIdPref(PrefService* prefs);
 
  private:
   // Perform Chrome-specific sign out. This happens when user signs out or about
   // to sign in.
   // This method should not be called from the outside of SigninClient. External
   // callers must use SignOut() instead.
   virtual void OnSignedOut() = 0;
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_CLIENT_H_