Add method for identifying different InfoBars

chrome/browser/password_manager/auto_signin_first_run_infobar_delegate.cc

 // 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.
 
 #include "chrome/browser/password_manager/auto_signin_first_run_infobar_delegate.h"
 
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/ui/android/infobars/auto_signin_first_run_infobar.h"
@@ skipping 33 matching lines @@
   SetMessage(message);
 }
 
 AutoSigninFirstRunInfoBarDelegate::~AutoSigninFirstRunInfoBarDelegate() {
   Profile* profile =
       Profile::FromBrowserContext(web_contents_->GetBrowserContext());
   password_bubble_experiment::RecordAutoSignInPromptFirstRunExperienceWasShown(
       profile->GetPrefs());
 }
 
+std::string AutoSigninFirstRunInfoBarDelegate::GetIdentifier() const {
+  return "AutoSigninFirstRunInfoBarDelegate";
+}
+
 base::string16 AutoSigninFirstRunInfoBarDelegate::GetButtonLabel(
     InfoBarButton button) const {
   return l10n_util::GetStringUTF16(IDS_ONE_CLICK_SIGNIN_DIALOG_OK_BUTTON);
 }
 
 bool AutoSigninFirstRunInfoBarDelegate::Accept() {
   return true;
 }
 
 bool AutoSigninFirstRunInfoBarDelegate::Cancel() {
   return true;
 }