diff -r 000000000000 -r 6474c204b198 dom/webidl/DataStoreImpl.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/DataStoreImpl.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* -*- 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/.
+ */
+
+// TODO Bug 957086 - The DataStoreImpl WebIDL will be removed once the
+//                   DataStore API is fully rewritten in C++ (i.e. should be
+//                   directly implemented by the DataStore WebIDL).
+
+[HeaderFile="mozilla/dom/DataStore.h",
+ Func="mozilla::dom::DataStore::EnabledForScope",
+ JSImplementation="@mozilla.org/dom/datastore-impl;1"]
+interface DataStoreImpl {
+  void setEventTarget(EventTarget eventTarget);
+
+  // Returns the label of the DataSource.
+  readonly attribute DOMString name;
+
+  // Returns the origin of the DataSource (e.g., 'facebook.com').
+  // This value is the manifest URL of the owner app.
+  readonly attribute DOMString owner;
+
+  // is readOnly a F(current_app, datastore) function? yes
+  readonly attribute boolean readOnly;
+
+  // Promise<any>
+  Promise get(DataStoreKey... id);
+
+  // Promise<void>
+  Promise put(any obj, DataStoreKey id, optional DOMString revisionId = "");
+
+  // Promise<DataStoreKey>
+  Promise add(any obj, optional DataStoreKey id,
+              optional DOMString revisionId = "");
+
+  // Promise<boolean>
+  Promise remove(DataStoreKey id, optional DOMString revisionId = "");
+
+  // Promise<void>
+  Promise clear(optional DOMString revisionId = "");
+
+  readonly attribute DOMString revisionId;
+
+  // Promise<unsigned long>
+  Promise getLength();
+
+  [NewObject]
+  DataStoreCursor sync(optional DOMString revisionId = "");
+};
+
+
+// TODO Bug 957086 - The DataStoreCursorImpl WebIDL will be removed once the
+//                   DataStore API is fully rewritten in C++ (i.e. should be
+//                   directly implemented by the DataStoreCursor WebIDL).
+
+[HeaderFile="mozilla/dom/DataStore.h",
+ Func="mozilla::dom::DataStore::EnabledForScope",
+ JSImplementation="@mozilla.org/dom/datastore-cursor-impl;1"]
+interface DataStoreCursorImpl {
+  // the DataStore
+  readonly attribute DataStore store;
+
+  // Promise<DataStoreTask>
+  Promise next();
+
+  void close();
+};