1 files changed, 28 insertions, 0 deletions
diff --git a/dom/webidl/StorageManager.webidl b/dom/webidl/StorageManager.webidl
new file mode 100644
index 0000000000..06e5a97947
--- /dev/null
+++ b/dom/webidl/StorageManager.webidl
@@ -0,0 +1,28 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://storage.spec.whatwg.org/#storagemanager
+ *
+ */
+
+[SecureContext,
+ Exposed=(Window,Worker),
+ Pref="dom.storageManager.enabled"]
+interface StorageManager {
+  [Throws]
+  Promise<boolean> persisted();
+
+  [Exposed=Window, Throws]
+  Promise<boolean> persist();
+
+  [Throws]
+  Promise<StorageEstimate> estimate();
+};
+
+dictionary StorageEstimate {
+  unsigned long long usage;
+  unsigned long long quota;
+};