Add method for identifying different InfoBars

chrome/browser/infobars/insecure_content_infobar_delegate.cc

 // 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.
 
 #include "chrome/browser/infobars/insecure_content_infobar_delegate.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/metrics/histogram.h"
@@ skipping 33 matching lines @@
   infobar_service->AddInfoBar(std::move(new_infobar));
 }
 
 InsecureContentInfoBarDelegate::InsecureContentInfoBarDelegate()
     : ConfirmInfoBarDelegate() {
 }
 
 InsecureContentInfoBarDelegate::~InsecureContentInfoBarDelegate() {
 }
 
+infobars::InfoBarDelegate::InfoBarIdentifier
+InsecureContentInfoBarDelegate::GetIdentifier() const {
+  return INSECURE_CONTENT_INFOBAR_DELEGATE;
+}
+
 void InsecureContentInfoBarDelegate::InfoBarDismissed() {
   UMA_HISTOGRAM_ENUMERATION("InsecureContentInfoBarDelegateV2",
                             DISPLAY_INFOBAR_DISMISSED, NUM_EVENTS);
   ConfirmInfoBarDelegate::InfoBarDismissed();
 }
 
 InsecureContentInfoBarDelegate*
     InsecureContentInfoBarDelegate::AsInsecureContentInfoBarDelegate() {
   return this;
 }
@@ skipping 32 matching lines @@
   return true;
 }
 
 base::string16 InsecureContentInfoBarDelegate::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 GURL InsecureContentInfoBarDelegate::GetLinkURL() const {
   return GURL("https://support.google.com/chrome/answer/1342714");
 }