Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

modules/background_sync/PeriodicSyncEventInit.idl

Index: modules/background_sync/PeriodicSyncEventInit.idl
diff --git a/modules/background_sync/PeriodicSyncEventInit.idl b/modules/background_sync/PeriodicSyncEventInit.idl
deleted file mode 100644
index 60d2b728b8a9eea69f187c8524845b5210a8c763..0000000000000000000000000000000000000000
--- a/modules/background_sync/PeriodicSyncEventInit.idl
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-dictionary PeriodicSyncEventInit : ExtendableEventInit {
-    required PeriodicSyncRegistration registration;
-};