Add method for identifying different InfoBars

chrome/browser/nacl_host/nacl_infobar_delegate.cc

 // Copyright (c) 2012 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/nacl_host/nacl_infobar_delegate.h"
 
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/infobars/core/infobar.h"
 #include "content/public/browser/render_view_host.h"
@@ skipping 20 matching lines @@
         scoped_ptr<ConfirmInfoBarDelegate>(new NaClInfoBarDelegate())));
   }
 }
 
 NaClInfoBarDelegate::NaClInfoBarDelegate() : ConfirmInfoBarDelegate() {
 }
 
 NaClInfoBarDelegate::~NaClInfoBarDelegate() {
 }
 
+std::string NaClInfoBarDelegate::GetIdentifier() const {
+  return "NaClInfoBarDelegate";
+}
+
 base::string16 NaClInfoBarDelegate::GetMessageText() const {
   return l10n_util::GetStringUTF16(IDS_NACL_APP_MISSING_ARCH_MESSAGE);
 }
 
 int NaClInfoBarDelegate::GetButtons() const {
   return BUTTON_NONE;
 }
 
 base::string16 NaClInfoBarDelegate::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 GURL NaClInfoBarDelegate::GetLinkURL() const {
   return GURL("https://support.google.com/chrome/?p=ib_nacl");
 }