import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/webidl/XPathEvaluator.webidl

@@ -0,0 +1,19 @@
+/* -*- 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/.
+ */
+
+[Constructor]
+interface XPathEvaluator {
+  // Based on nsIDOMXPathEvaluator
+  [NewObject, Throws]
+  XPathExpression createExpression(DOMString expression,
+                                   XPathNSResolver? resolver);
+  [Pure]
+  Node createNSResolver(Node nodeResolver);
+  [Throws]
+  XPathResult evaluate(DOMString expression, Node contextNode,
+                       XPathNSResolver? resolver, unsigned short type,
+                       object? result);
+};