Add InfoBarIdentifier to GroupedPermissionInfoBarDelegate

chrome/browser/permissions/grouped_permission_infobar_delegate.cc

Index: chrome/browser/permissions/grouped_permission_infobar_delegate.cc
diff --git a/chrome/browser/permissions/grouped_permission_infobar_delegate.cc b/chrome/browser/permissions/grouped_permission_infobar_delegate.cc
index 4e1834f1d728452327fead4284d1bc6279f1d66b..f74e0a7b6b164c23a61e64702f2df409626a9d5b 100644
--- a/chrome/browser/permissions/grouped_permission_infobar_delegate.cc
+++ b/chrome/browser/permissions/grouped_permission_infobar_delegate.cc
@@ -29,6 +29,11 @@ int GroupedPermissionInfoBarDelegate::GetButtons() const {
     return ConfirmInfoBarDelegate::GetButtons();
 }
 
+infobars::InfoBarDelegate::InfoBarIdentifier
+GroupedPermissionInfoBarDelegate::GetIdentifier() const {
+  return GROUPED_PERMISSION_INFOBAR_DELEGATE;
+}
+
 base::string16 GroupedPermissionInfoBarDelegate::GetButtonLabel(
     InfoBarButton button) const {
   if (GetPermissionCount() >= 2) {