import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/interfaces/core/nsIDOMDocumentFragment.idl

@@ -0,0 +1,27 @@
+/* -*- 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/. */
+
+#include "nsIDOMNode.idl"
+    
+/**
+ * DocumentFragment is a "lightweight" or "minimal" Document object.
+ * nsIDOMDocumentFragment is used in situations where the Document
+ * interface can potentially be a heavyweight interface.
+ *
+ * For more information on this interface please see 
+ * http://www.w3.org/TR/DOM-Level-2-Core/
+ */
+
+[builtinclass, uuid(48eb8d72-95bb-402e-a8fc-f2b187abcbdb)]
+interface nsIDOMDocumentFragment : nsIDOMNode
+{
+  /**
+   * Return nodes that match a given CSS selector.
+   *
+   * @see <http://dev.w3.org/2006/webapi/selectors-api/>
+   */
+  nsIDOMElement querySelector([Null(Stringify)] in DOMString selectors);
+  nsIDOMNodeList querySelectorAll([Null(Stringify)] in DOMString selectors);
+};