[Sync] Replace typedef with using.

chrome/browser/ui/sync/one_click_signin_links_delegate_impl_browsertest.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 "chrome/browser/ui/sync/one_click_signin_links_delegate_impl.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 
-typedef InProcessBrowserTest OneClickSigninLinksDelegateBrowserTest;
+using OneClickSigninLinksDelegateBrowserTest = InProcessBrowserTest;
 
 IN_PROC_BROWSER_TEST_F(OneClickSigninLinksDelegateBrowserTest, AdvancedLink) {
   std::unique_ptr<OneClickSigninLinksDelegate> delegate_(
       new OneClickSigninLinksDelegateImpl(browser()));
 
   int starting_tab_count = browser()->tab_strip_model()->count();
 
   // The current tab should be replaced.
   delegate_->OnAdvancedLinkClicked();
 
   int tab_count = browser()->tab_strip_model()->count();
   EXPECT_EQ(starting_tab_count, tab_count);
 }
 
 IN_PROC_BROWSER_TEST_F(OneClickSigninLinksDelegateBrowserTest, LearnMoreLink) {
   std::unique_ptr<OneClickSigninLinksDelegate> delegate_(
       new OneClickSigninLinksDelegateImpl(browser()));
 
   int starting_tab_count = browser()->tab_strip_model()->count();
 
   // A new tab should be opened.
   delegate_->OnLearnMoreLinkClicked(false);
 
   int tab_count = browser()->tab_strip_model()->count();
   EXPECT_EQ(starting_tab_count + 1, tab_count);
 }