Change SigninClient::CreateGaiaAuthFetcher return type to unique_ptr

components/signin/core/browser/child_account_info_fetcher_impl.cc

 // Copyright 2015 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.
 
 #include "components/signin/core/browser/child_account_info_fetcher_impl.h"
 
 #include "base/strings/string_split.h"
 #include "base/trace_event/trace_event.h"
 #include "base/values.h"
 #include "components/invalidation/public/invalidation_service.h"
@@ skipping 78 matching lines @@
 }
 
 void ChildAccountInfoFetcherImpl::OnGetTokenSuccess(
     const OAuth2TokenService::Request* request,
     const std::string& access_token,
     const base::Time& expiration_time) {
   TRACE_EVENT_ASYNC_STEP_PAST0("AccountFetcherService", kFetcherId, this,
                                "OnGetTokenSuccess");
   DCHECK_EQ(request, login_token_request_.get());
 
-  gaia_auth_fetcher_.reset(
-      fetcher_service_->signin_client_->CreateGaiaAuthFetcher(
-          this, GaiaConstants::kChromeSource, request_context_getter_));
+  gaia_auth_fetcher_ = fetcher_service_->signin_client_->CreateGaiaAuthFetcher(
+      this, GaiaConstants::kChromeSource, request_context_getter_);
   gaia_auth_fetcher_->StartOAuthLogin(access_token,
                                       GaiaConstants::kGaiaService);
 }
 
 void ChildAccountInfoFetcherImpl::OnGetTokenFailure(
     const OAuth2TokenService::Request* request,
     const GoogleServiceAuthError& error) {
   HandleFailure();
 }
 
@@ skipping 60 matching lines @@
 
 void ChildAccountInfoFetcherImpl::OnIncomingInvalidation(
     const syncer::ObjectIdInvalidationMap& invalidation_map) {
   FetchIfNotInProgress();
   invalidation_map.AcknowledgeAll();
 }
 
 std::string ChildAccountInfoFetcherImpl::GetOwnerName() const {
   return std::string(kFetcherId);
 }