Revert "[Smart Lock, UI] First run expience for Auto sign-in prompt."

chrome/browser/password_manager/auto_signin_first_run_infobar_delegate.h

-// Copyright 2015 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_PASSWORD_MANAGER_AUTO_SIGNIN_FIRST_RUN_INFOBAR_DELEGATE_H_
-#define CHROME_BROWSER_PASSWORD_MANAGER_AUTO_SIGNIN_FIRST_RUN_INFOBAR_DELEGATE_H_
-
-#include "base/macros.h"
-#include "chrome/browser/password_manager/password_manager_infobar_delegate.h"
-
-namespace content {
-class WebContents;
-}
-
-// This delegate provides and acts on data for the android only auto sign-in
-// first run experience infobar.
-class AutoSigninFirstRunInfoBarDelegate
-    : public PasswordManagerInfoBarDelegate {
- public:
-  static void Create(content::WebContents* web_contents,
-                     const base::string16& message);
-
-  ~AutoSigninFirstRunInfoBarDelegate() override;
-
-  infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
-  base::string16 GetButtonLabel(InfoBarButton button) const override;
-  bool Accept() override;
-  bool Cancel() override;
-
-  base::string16 GetExplanation() { return explanation_; }
-
- protected:
-  // Makes a ctor available in tests.
-  AutoSigninFirstRunInfoBarDelegate(content::WebContents* web_contents,
-                                    bool is_smart_lock_branding_available,
-                                    const base::string16& message);
-
- private:
-  base::string16 explanation_;
-
-  content::WebContents* web_contents_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutoSigninFirstRunInfoBarDelegate);
-};
-
-#endif  // CHROME_BROWSER_PASSWORD_MANAGER_AUTO_SIGNIN_FIRST_RUN_INFOBAR_DELEGATE_H_