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

modules/serviceworkers/InstallEvent.idl

Index: modules/serviceworkers/InstallEvent.idl
diff --git a/modules/serviceworkers/InstallEvent.idl b/modules/serviceworkers/InstallEvent.idl
new file mode 100644
index 0000000000000000000000000000000000000000..dc9ee1287509efc7bcf4cf4985102bcdf53f98df
--- /dev/null
+++ b/modules/serviceworkers/InstallEvent.idl
@@ -0,0 +1,12 @@
+// Copyright 2014 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.
+
+// https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#fetch-event-interface
+[
+    Constructor(DOMString type, optional ExtendableEventInit eventInitDict),
+    Exposed=ServiceWorker,
+    RuntimeEnabled=ForeignFetch,
+] interface InstallEvent : ExtendableEvent {
+  [CallWith=ExecutionContext, RaisesException] void registerForeignFetchScopes(sequence<USVString> subScopes, (USVString or sequence<USVString>) origins);
+};