Make OAuth2TokenService and subclasses take delegate by unique_ptr

chrome/browser/signin/profile_oauth2_token_service_factory.cc

 // Copyright (c) 2012 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/signin/profile_oauth2_token_service_factory.h"
 
 #include "build/build_config.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/account_tracker_service_factory.h"
 #include "chrome/browser/signin/chrome_signin_client_factory.h"
@@ skipping 34 matching lines @@
 // static
 ProfileOAuth2TokenServiceFactory*
     ProfileOAuth2TokenServiceFactory::GetInstance() {
   return base::Singleton<ProfileOAuth2TokenServiceFactory>::get();
 }
 
 KeyedService* ProfileOAuth2TokenServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   Profile* profile = static_cast<Profile*>(context);
 #if defined(OS_ANDROID)
-  OAuth2TokenServiceDelegateAndroid* delegate =
-      new OAuth2TokenServiceDelegateAndroid(
-          AccountTrackerServiceFactory::GetInstance()->GetForProfile(profile));
+  auto delegate = base::MakeUnique<OAuth2TokenServiceDelegateAndroid>(
+      AccountTrackerServiceFactory::GetInstance()->GetForProfile(profile));
 #else
-  MutableProfileOAuth2TokenServiceDelegate* delegate =
-      new MutableProfileOAuth2TokenServiceDelegate(
-          ChromeSigninClientFactory::GetInstance()->GetForProfile(profile),
-          SigninErrorControllerFactory::GetInstance()->GetForProfile(profile),
-          AccountTrackerServiceFactory::GetInstance()->GetForProfile(profile));
+  auto delegate = base::MakeUnique<MutableProfileOAuth2TokenServiceDelegate>(
+      ChromeSigninClientFactory::GetInstance()->GetForProfile(profile),
+      SigninErrorControllerFactory::GetInstance()->GetForProfile(profile),
+      AccountTrackerServiceFactory::GetInstance()->GetForProfile(profile));
 #endif
-  ProfileOAuth2TokenService* service = new ProfileOAuth2TokenService(delegate);
+  ProfileOAuth2TokenService* service =
+      new ProfileOAuth2TokenService(std::move(delegate));
   return service;
 }