Add method for identifying different InfoBars

chrome/browser/ui/startup/google_api_keys_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/startup/google_api_keys_infobar_delegate.h"
 
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/grit/chromium_strings.h"
 #include "components/infobars/core/infobar.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 11 matching lines @@
       scoped_ptr<ConfirmInfoBarDelegate>(new GoogleApiKeysInfoBarDelegate())));
 }
 
 GoogleApiKeysInfoBarDelegate::GoogleApiKeysInfoBarDelegate()
     : ConfirmInfoBarDelegate() {
 }
 
 GoogleApiKeysInfoBarDelegate::~GoogleApiKeysInfoBarDelegate() {
 }
 
+infobars::InfoBarDelegate::InfoBarIdentifier
+GoogleApiKeysInfoBarDelegate::GetIdentifier() const {
+  return GOOGLE_API_KEYS_INFOBAR_DELEGATE;
+}
+
 base::string16 GoogleApiKeysInfoBarDelegate::GetMessageText() const {
   return l10n_util::GetStringUTF16(IDS_MISSING_GOOGLE_API_KEYS);
 }
 
 int GoogleApiKeysInfoBarDelegate::GetButtons() const {
   return BUTTON_NONE;
 }
 
 base::string16 GoogleApiKeysInfoBarDelegate::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 GURL GoogleApiKeysInfoBarDelegate::GetLinkURL() const {
   return GURL(google_apis::kAPIKeysDevelopersHowToURL);
 }