Fix unique_ptr usage in handling OAuth2TokenService::StartRequest result

google_apis/gaia/oauth2_token_service_unittest.cc

 // Copyright 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.
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 18 matching lines @@
   RetryingTestingOAuth2TokenServiceConsumer(
       OAuth2TokenService* oauth2_service,
       const std::string& account_id)
       : oauth2_service_(oauth2_service),
         account_id_(account_id) {}
   ~RetryingTestingOAuth2TokenServiceConsumer() override {}
 
   void OnGetTokenFailure(const OAuth2TokenService::Request* request,
                          const GoogleServiceAuthError& error) override {
     TestingOAuth2TokenServiceConsumer::OnGetTokenFailure(request, error);
-    request_.reset(oauth2_service_->StartRequest(
-        account_id_, OAuth2TokenService::ScopeSet(), this).release());
+    request_ = oauth2_service_->StartRequest(
+        account_id_, OAuth2TokenService::ScopeSet(), this);
   }
 
   OAuth2TokenService* oauth2_service_;
   std::string account_id_;
   std::unique_ptr<OAuth2TokenService::Request> request_;
 };
 
 class TestOAuth2TokenService : public OAuth2TokenService {
  public:
   explicit TestOAuth2TokenService(
@@ skipping 611 matching lines @@
   fetcher = factory_.GetFetcherByID(0);
   // ASSERT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("another token", 3600));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(2, consumer_.number_of_successful_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("another token", consumer_.last_token_);
   EXPECT_EQ(1, (int)oauth2_service_->token_cache_.size());
 }