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

modules/webusb/NavigatorUSB.idl

Index: modules/webusb/NavigatorUSB.idl
diff --git a/modules/background_sync/ServiceWorkerGlobalScopeSync.idl b/modules/webusb/NavigatorUSB.idl
similarity index 50%
copy from modules/background_sync/ServiceWorkerGlobalScopeSync.idl
copy to modules/webusb/NavigatorUSB.idl
index f8a766a26f2ec6a1869431aff96ae52d66044abf..d916a0eab9e1efec91e0a6365fddb5099b9b0931 100644
--- a/modules/background_sync/ServiceWorkerGlobalScopeSync.idl
+++ b/modules/webusb/NavigatorUSB.idl
@@ -2,9 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// http://wicg.github.io/webusb/#device-enumeration
+
 [
-    RuntimeEnabled=BackgroundSync,
-] partial interface ServiceWorkerGlobalScope {
-    attribute EventHandler onsync;
-    attribute EventHandler onperiodicsync;
+    GarbageCollected,
+    RuntimeEnabled=WebUSB,
+] partial interface Navigator {
+    readonly attribute USB usb;
 };