Enable the optional permission prompt persistence toggle on grouped infobars

chrome/browser/permissions/grouped_permission_infobar_delegate.cc

 // Copyright 2016 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/permissions/grouped_permission_infobar_delegate.h"
+#include "chrome/browser/permissions/permission_util.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/url_formatter/elide_url.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 GroupedPermissionInfoBarDelegate::GroupedPermissionInfoBarDelegate(
     const GURL& requesting_origin,
     const std::vector<ContentSettingsType>& types)
     : requesting_origin_(requesting_origin),
       types_(types),
-      accept_states_(types_.size(), true) {}
+      accept_states_(types_.size(), true),
+      persist_(true) {}
 
 GroupedPermissionInfoBarDelegate::~GroupedPermissionInfoBarDelegate() {}
 
 infobars::InfoBarDelegate::Type
 GroupedPermissionInfoBarDelegate::GetInfoBarType() const {
   return PAGE_ACTION_TYPE;
 }
 
+bool GroupedPermissionInfoBarDelegate::ShouldShowPersistenceToggle() const {
+  if (GetPermissionCount() >= 2)
+    return false;
+  return PermissionUtil::ShouldShowPersistenceToggle();
+}
+
 int GroupedPermissionInfoBarDelegate::GetButtons() const {
   if (GetPermissionCount() >= 2)
     return ConfirmInfoBarDelegate::InfoBarButton::BUTTON_OK;
   else
     return ConfirmInfoBarDelegate::GetButtons();
 }
 
 base::string16 GroupedPermissionInfoBarDelegate::GetButtonLabel(
     InfoBarButton button) const {
   if (GetPermissionCount() >= 2) {
@@ skipping 50 matching lines @@
 void GroupedPermissionInfoBarDelegate::ToggleAccept(int position,
                                                     bool new_value) {
   DCHECK(position >= 0 && position < static_cast<int>(types_.size()));
   accept_states_[position] = new_value;
 }
 
 bool GroupedPermissionInfoBarDelegate::GetAcceptState(int position) {
   DCHECK(position >= 0 && position < static_cast<int>(types_.size()));
   return accept_states_[position];
 }