1 files changed, 54 insertions, 0 deletions
diff --git a/dom/chrome-webidl/MozSharedMap.webidl b/dom/chrome-webidl/MozSharedMap.webidl
new file mode 100644
index 0000000000..ef262fc48e
--- /dev/null
+++ b/dom/chrome-webidl/MozSharedMap.webidl
@@ -0,0 +1,54 @@
+/* -*- 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/.
+ */
+
+typedef any StructuredClonable;
+
+[ChromeOnly, Exposed=Window]
+interface MozSharedMapChangeEvent : Event {
+  [Cached, Constant]
+  readonly attribute sequence<DOMString> changedKeys;
+};
+
+dictionary MozSharedMapChangeEventInit : EventInit {
+  required sequence<DOMString> changedKeys;
+};
+
+[ChromeOnly, Exposed=Window]
+interface MozSharedMap : EventTarget {
+  boolean has(DOMString name);
+
+  [Throws]
+  StructuredClonable get(DOMString name);
+
+  iterable<DOMString, StructuredClonable>;
+};
+
+[ChromeOnly, Exposed=Window]
+interface MozWritableSharedMap : MozSharedMap {
+  /**
+   * Sets the given key to the given structured-clonable value. The value is
+   * synchronously structured cloned, and the serialized value is saved in the
+   * map.
+   *
+   * Unless flush() is called, the new value will be broadcast to content
+   * processes after a short delay.
+   */
+  [Throws]
+  undefined set(DOMString name, StructuredClonable value);
+
+  /**
+   * Removes the given key from the map.
+   *
+   * Unless flush() is called, the removal will be broadcast to content
+   * processes after a short delay.
+   */
+  undefined delete(DOMString name);
+
+  /**
+   * Broadcasts any pending changes to all content processes.
+   */
+  undefined flush();
+};