Add method for identifying different InfoBars

chrome/browser/ui/collected_cookies_infobar_delegate.h

 // Copyright (c) 2011 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_COLLECTED_COOKIES_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_UI_COLLECTED_COOKIES_INFOBAR_DELEGATE_H_
 
 #include "components/infobars/core/confirm_infobar_delegate.h"
 
 class InfoBarService;
 
 // This class configures an infobar shown when the collected cookies dialog
 // is closed and the settings for one or more cookies have been changed.  The
 // user is shown a message indicating that a reload of the page is
 // required for the changes to take effect, and presented a button to perform
 // the reload right from the infobar.
 class CollectedCookiesInfoBarDelegate : public ConfirmInfoBarDelegate {
  public:
   // Creates a collected cookies infobar and delegate and adds the infobar to
   // |infobar_service|.
   static void Create(InfoBarService* infobar_service);
 
  private:
   CollectedCookiesInfoBarDelegate();
   ~CollectedCookiesInfoBarDelegate() override;
 
   // ConfirmInfoBarDelegate:
   Type GetInfoBarType() const override;
+  std::string GetIdentifier() const override;
   int GetIconId() const override;
   gfx::VectorIconId GetVectorIconId() const override;
   base::string16 GetMessageText() const override;
   int GetButtons() const override;
   base::string16 GetButtonLabel(InfoBarButton button) const override;
   bool Accept() override;
 
   DISALLOW_COPY_AND_ASSIGN(CollectedCookiesInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_COLLECTED_COOKIES_INFOBAR_DELEGATE_H_