Add a feature to display a persistence toggle for permission prompts on Android.

chrome/browser/notifications/notification_permission_infobar_delegate.cc

Index: chrome/browser/notifications/notification_permission_infobar_delegate.cc
diff --git a/chrome/browser/notifications/notification_permission_infobar_delegate.cc b/chrome/browser/notifications/notification_permission_infobar_delegate.cc
index 2479e88e9ce6fa0fe20e0cceb36116b77a682100..0845d552924343d560b820c48120ac1f5af0aeb9 100644
--- a/chrome/browser/notifications/notification_permission_infobar_delegate.cc
+++ b/chrome/browser/notifications/notification_permission_infobar_delegate.cc
@@ -15,9 +15,9 @@ infobars::InfoBar* NotificationPermissionInfobarDelegate::Create(
     const GURL& requesting_frame,
     bool user_gesture,
     Profile* profile,
-    const base::Callback<void(bool, bool)>& callback) {
-  return infobar_service->AddInfoBar(infobar_service->CreateConfirmInfoBar(
-      std::unique_ptr<ConfirmInfoBarDelegate>(
+    const PermissionSetCallback& callback) {
+  return infobar_service->AddInfoBar(
+      CreatePermissionInfoBar(std::unique_ptr<PermissionInfobarDelegate>(
           new NotificationPermissionInfobarDelegate(
               requesting_frame, user_gesture, profile, callback))));
 }
@@ -26,7 +26,7 @@ NotificationPermissionInfobarDelegate::NotificationPermissionInfobarDelegate(
     const GURL& requesting_frame,
     bool user_gesture,
     Profile* profile,
-    const base::Callback<void(bool, bool)>& callback)
+    const PermissionSetCallback& callback)
     : PermissionInfobarDelegate(requesting_frame,
                                 content::PermissionType::NOTIFICATIONS,
                                 CONTENT_SETTINGS_TYPE_NOTIFICATIONS,
@@ -38,6 +38,13 @@ NotificationPermissionInfobarDelegate::NotificationPermissionInfobarDelegate(
 NotificationPermissionInfobarDelegate::~NotificationPermissionInfobarDelegate()
     {}
 
+// Do not allow the persistence toggle to be shown for this infobar, as it does
+// not make sense for notification permission to not be persisted.
+bool NotificationPermissionInfobarDelegate::ShouldShowPersistenceToggle()
+    const {
+  return false;
+}
+
 infobars::InfoBarDelegate::InfoBarIdentifier
 NotificationPermissionInfobarDelegate::GetIdentifier() const {
   return NOTIFICATION_PERMISSION_INFOBAR_DELEGATE;