diff -r 000000000000 -r 6474c204b198 toolkit/components/places/nsPIPlacesDatabase.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/places/nsPIPlacesDatabase.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 sts=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 "nsISupports.idl"
+
+interface mozIStorageConnection;
+interface nsINavHistoryQuery;
+interface nsINavHistoryQueryOptions;
+interface mozIStorageStatementCallback;
+interface mozIStoragePendingStatement;
+
+/**
+ * This is a private interface used by Places components to get access to the
+ * database.  If outside consumers wish to use this, they should only read from
+ * the database so they do not break any internal invariants.
+ */
+[scriptable, uuid(6eb7ed3d-13ca-450b-b370-15c75e2f3dab)]
+interface nsPIPlacesDatabase : nsISupports
+{
+  /**
+   * The database connection used by Places.
+   */
+  readonly attribute mozIStorageConnection DBConnection;
+
+  /**
+   * Asynchronously executes the statement created from queries.
+   *
+   * @see nsINavHistoryService::executeQueries
+   * @note THIS IS A TEMPORARY API.  Don't rely on it, since it will be replaced
+   *       in future versions by a real async querying API.
+   * @note Results obtained from this method differ from results obtained from
+   *       executeQueries, because there is additional filtering and sorting
+   *       done by the latter.  Thus you should use executeQueries, unless you
+   *       are absolutely sure that the returned results are fine for
+   *       your use-case.
+   */
+  mozIStoragePendingStatement asyncExecuteLegacyQueries(
+    [array, size_is(aQueryCount)] in nsINavHistoryQuery aQueries,
+    in unsigned long aQueryCount,
+    in nsINavHistoryQueryOptions aOptions,
+    in mozIStorageStatementCallback aCallback);
+};