1 files changed, 20 insertions, 0 deletions
diff --git a/dom/chrome-webidl/MozDocumentObserver.webidl b/dom/chrome-webidl/MozDocumentObserver.webidl
new file mode 100644
index 0000000000..06abd37eeb
--- /dev/null
+++ b/dom/chrome-webidl/MozDocumentObserver.webidl
@@ -0,0 +1,20 @@
+/* -*- 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/.
+ */
+
+[Exposed=Window]
+callback interface MozDocumentCallback {
+  undefined onNewDocument(MozDocumentMatcher matcher, WindowProxy window);
+  undefined onPreloadDocument(MozDocumentMatcher matcher, LoadInfo loadInfo);
+};
+
+[ChromeOnly, Exposed=Window]
+interface MozDocumentObserver {
+  constructor(MozDocumentCallback callbacks);
+
+  [Throws]
+  undefined observe(sequence<MozDocumentMatcher> matchers);
+  undefined disconnect();
+};