Add a scoper object for URLFetcher::Factory

chrome/browser/chromeos/login/parallel_authenticator_unittest.cc

 // Copyright (c) 2011 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 "chrome/browser/chromeos/login/parallel_authenticator.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
@@ skipping 552 matching lines @@
   LoginFailure failure = LoginFailure::FromNetworkAuthFailure(error);
   state_.release()->PresetOnlineLoginStatus(result_, failure);
   ExpectLoginFailure(failure);
 
   RunResolve(auth_.get(), &message_loop_);
 
   // After the request below completes, OnLoginSuccess gets called again.
   ExpectLoginSuccess(username_, password_, result_, false);
 
   MockFactory<SuccessFetcher> factory;
-  URLFetcher::set_factory(&factory);
   TestingProfile profile;
 
   auth_->RetryAuth(&profile,
                    username_,
                    std::string(),
                    std::string(),
                    std::string());
   message_loop_.Run();
 }
 
@@ skipping 22 matching lines @@
 
   // After the request below completes, OnLoginSuccess gets called again.
   failure = LoginFailure::FromNetworkAuthFailure(
       GoogleServiceAuthError::FromCaptchaChallenge(
           CaptchaFetcher::GetCaptchaToken(),
           GURL(CaptchaFetcher::GetCaptchaUrl()),
           GURL(CaptchaFetcher::GetUnlockUrl())));
   ExpectLoginFailure(failure);
 
   MockFactory<CaptchaFetcher> factory;
-  URLFetcher::set_factory(&factory);
   TestingProfile profile;
 
   auth_->RetryAuth(&profile,
                    username_,
                    std::string(),
                    std::string(),
                    std::string());
   message_loop_.Run();
 }
 
@@ skipping 97 matching lines @@
   FilePath tmp_file_path = FakeLocalaccountFile(username_);
   ReadLocalaccountFile(auth_.get(), tmp_file_path.BaseName().value());
 
   auth_->AuthenticateToUnlock(username_, "");
   message_loop_.Run();
 
   Delete(tmp_file_path, false);
 }
 
 }  // namespace chromeos