Allow script to request durable storage permission (chrome side)

chrome/browser/storage/durable_storage_permission_context.cc

Index: chrome/browser/storage/durable_storage_permission_context.cc
diff --git a/chrome/browser/storage/durable_storage_permission_context.cc b/chrome/browser/storage/durable_storage_permission_context.cc
new file mode 100644
index 0000000000000000000000000000000000000000..68b5af8a96032c2271d5b58859a691a36655ad0f
--- /dev/null
+++ b/chrome/browser/storage/durable_storage_permission_context.cc
@@ -0,0 +1,19 @@
+// 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/storage/durable_storage_permission_context.h"
+
+#include "chrome/browser/content_settings/tab_specific_content_settings.h"
+#include "chrome/browser/permissions/permission_request_id.h"
+#include "content/public/browser/child_process_security_policy.h"
+#include "url/gurl.h"
+
+DurableStoragePermissionContext::DurableStoragePermissionContext(
+    Profile* profile)
+    : PermissionContextBase(profile, CONTENT_SETTINGS_TYPE_DURABLE_STORAGE) {
+}
+
+bool DurableStoragePermissionContext::IsRestrictedToSecureOrigins() const {
+  return true;
+}