diff -r 000000000000 -r 6474c204b198 xpcom/ds/nsIAtomService.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/ds/nsIAtomService.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#include "nsISupports.idl"
+
+interface nsIAtom;
+
+%{C++
+#define NS_ATOMSERVICE_CID \
+{ /* ed3db3fc-0168-4cab-8818-98f5475a490c */ \
+    0xed3db3fc,                              \
+    0x0168,                                  \
+    0x4cab,                                  \
+    {0x88, 0x18, 0x98, 0xf5, 0x47, 0x5a, 0x49, 0x0c} }
+
+#define NS_ATOMSERVICE_CONTRACTID "@mozilla.org/atom-service;1"
+%}
+
+/*
+ * Should this really be scriptable?  Using atoms from script or proxies
+ * could be dangerous since double-wrapping could lead to loss of
+ * pointer identity.
+ */
+ 
+[scriptable, uuid(9c1f50b9-f9eb-42d4-a8cb-2c7600aeb241)]
+interface nsIAtomService : nsISupports {
+
+  /**
+   * Version of NS_NewAtom that doesn't require linking against the
+   * XPCOM library.  See nsIAtom.idl.
+   */
+  nsIAtom getAtom(in AString value);
+
+  /**
+   * Version of NS_NewPermanentAtom that doesn't require linking against
+   * the XPCOM library.  See nsIAtom.idl.
+   */
+  nsIAtom getPermanentAtom(in AString value);
+
+  /**
+   * Get an atom with a utf8 string.
+   */
+  [noscript] nsIAtom getAtomUTF8(in string value);
+  [noscript] nsIAtom getPermanentAtomUTF8(in string value);
+};