diff -r 000000000000 -r 6474c204b198 dom/webidl/DeviceStorage.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/DeviceStorage.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,61 @@
+/* -*- 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/. */
+
+dictionary DeviceStorageEnumerationParameters {
+  Date since;
+};
+
+interface DeviceStorage : EventTarget {
+  attribute EventHandler onchange;
+
+  [Throws]
+  DOMRequest? add(Blob? aBlob);
+  [Throws]
+  DOMRequest? addNamed(Blob? aBlob, DOMString aName);
+
+  [Throws]
+  DOMRequest get(DOMString aName);
+  [Throws]
+  DOMRequest getEditable(DOMString aName);
+  [Throws]
+  DOMRequest delete(DOMString aName);
+
+  [Throws]
+  DOMCursor enumerate(optional DeviceStorageEnumerationParameters options);
+  [Throws]
+  DOMCursor enumerate(DOMString path,
+                      optional DeviceStorageEnumerationParameters options);
+  [Throws]
+  DOMCursor enumerateEditable(optional DeviceStorageEnumerationParameters options);
+  [Throws]
+  DOMCursor enumerateEditable(DOMString path,
+                              optional DeviceStorageEnumerationParameters options);
+
+  [Throws]
+  DOMRequest freeSpace();
+  [Throws]
+  DOMRequest usedSpace();
+  [Throws]
+  DOMRequest available();
+  [Throws]
+  DOMRequest storageStatus();
+  [Throws]
+  DOMRequest format();
+  [Throws]
+  DOMRequest mount();
+  [Throws]
+  DOMRequest unmount();
+
+  // Note that the storageName is just a name (like sdcard), and doesn't
+  // include any path information.
+  readonly attribute DOMString storageName;
+
+  // Determines if this storage area is the one which will be used by default
+  // for storing new files.
+  readonly attribute boolean default;
+
+  [NewObject]
+  Promise getRoot();
+};