[Sync] Fix sync lint errors/includes, update presubmit.

chrome/browser/ui/sync/one_click_signin_links_delegate.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_LINKS_DELEGATE_H_
 #define CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_LINKS_DELEGATE_H_
 
 #include "base/macros.h"
 
 // Handles link clicks in the OneClickSigninDialogView.
 class OneClickSigninLinksDelegate {
  public:
   virtual ~OneClickSigninLinksDelegate() {}
   virtual void OnLearnMoreLinkClicked(bool is_dialog) = 0;
   virtual void OnAdvancedLinkClicked() = 0;
 
  protected:
   OneClickSigninLinksDelegate() {}
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(OneClickSigninLinksDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_LINKS_DELEGATE_H_