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

modules/webusb/USBConnectionEventInit.idl

Index: modules/webusb/USBConnectionEventInit.idl
diff --git a/modules/background_sync/PeriodicSyncEventInit.idl b/modules/webusb/USBConnectionEventInit.idl
similarity index 60%
copy from modules/background_sync/PeriodicSyncEventInit.idl
copy to modules/webusb/USBConnectionEventInit.idl
index 60d2b728b8a9eea69f187c8524845b5210a8c763..797cf732cf16690c06387d4751b20ece87702fa7 100644
--- a/modules/background_sync/PeriodicSyncEventInit.idl
+++ b/modules/webusb/USBConnectionEventInit.idl
@@ -2,6 +2,8 @@
 // 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;
+// http://wicg.github.io/webusb/#events
+
+dictionary USBConnectionEventInit : EventInit {
+    USBDevice device;
 };