Add method for identifying different InfoBars

chrome/browser/ui/android/content_settings/popup_blocked_infobar_delegate.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/android/content_settings/popup_blocked_infobar_delegate.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/prefs/pref_service.h"
@@ skipping 35 matching lines @@
       return;
     }
   }
 
   infobar_service->AddInfoBar(std::move(infobar));
 }
 
 PopupBlockedInfoBarDelegate::~PopupBlockedInfoBarDelegate() {
 }
 
+infobars::InfoBarDelegate::InfoBarIdentifier
+PopupBlockedInfoBarDelegate::GetIdentifier() const {
+  return POPUP_BLOCKED_INFOBAR_DELEGATE;
+}
+
 int PopupBlockedInfoBarDelegate::GetIconId() const {
   return IDR_BLOCKED_POPUPS;
 }
 
 PopupBlockedInfoBarDelegate*
     PopupBlockedInfoBarDelegate::AsPopupBlockedInfoBarDelegate() {
   return this;
 }
 
 PopupBlockedInfoBarDelegate::PopupBlockedInfoBarDelegate(
@@ skipping 39 matching lines @@
       PopupBlockerTabHelper::FromWebContents(web_contents);
   DCHECK(popup_blocker_helper);
   PopupBlockerTabHelper::PopupIdMap blocked_popups =
       popup_blocker_helper->GetBlockedPopupRequests();
   for (PopupBlockerTabHelper::PopupIdMap::iterator it = blocked_popups.begin();
       it != blocked_popups.end(); ++it)
     popup_blocker_helper->ShowBlockedPopup(it->first);
 
   return true;
 }