Fix unique_ptr usage in handling OAuth2TokenService::StartRequest result

google_apis/gaia/oauth2_token_service_unittest.cc

Index: google_apis/gaia/oauth2_token_service_unittest.cc
diff --git a/google_apis/gaia/oauth2_token_service_unittest.cc b/google_apis/gaia/oauth2_token_service_unittest.cc
index bd770cf6b7e781eb134601e9cf7b65f5373b37d6..b233d898a96f90d6ccde4a000235ef9a1058602e 100644
--- a/google_apis/gaia/oauth2_token_service_unittest.cc
+++ b/google_apis/gaia/oauth2_token_service_unittest.cc
@@ -36,8 +36,8 @@ class RetryingTestingOAuth2TokenServiceConsumer
   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_;