Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/webui/signin/login_ui_test_utils.cc

 // Copyright 2014 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/signin_promo.h"
 #include "chrome/browser/signin/signin_tracker_factory.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/signin/get_auth_frame.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ skipping 191 matching lines @@
     SigninInOldGaiaFlow(browser, email, password);
 }
 
 bool SignInWithUI(Browser* browser,
                   const std::string& username,
                   const std::string& password,
                   bool wait_for_account_cookies,
                   signin_metrics::AccessPoint access_point,
                   signin_metrics::Reason signin_reason) {
   SignInObserver signin_observer(wait_for_account_cookies);
-  scoped_ptr<SigninTracker> tracker =
+  std::unique_ptr<SigninTracker> tracker =
       SigninTrackerFactory::CreateForProfile(browser->profile(),
                                              &signin_observer);
 
   GURL signin_url = signin::GetPromoURL(access_point, signin_reason, false);
   DVLOG(1) << "Navigating to " << signin_url;
   // For some tests, the window is not shown yet and this might be the first tab
   // navigation, so GetActiveWebContents() for CURRENT_TAB is NULL. That's why
   // we use NEW_FOREGROUND_TAB rather than the CURRENT_TAB used by default in
   // ui_test_utils::NavigateToURL().
   ui_test_utils::NavigateToURLWithDisposition(
@@ skipping 13 matching lines @@
 bool SignInWithUI(Browser* browser,
                   const std::string& username,
                   const std::string& password) {
   return SignInWithUI(browser, username, password,
                       false /* wait_for_account_cookies */,
                       signin_metrics::AccessPoint::ACCESS_POINT_START_PAGE,
                       signin_metrics::Reason::REASON_SIGNIN_PRIMARY_ACCOUNT);
 }
 
 }  // namespace login_ui_test_utils