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

modules/worklet/WindowWorklet.idl

Index: modules/worklet/WindowWorklet.idl
diff --git a/modules/worklet/WindowWorklet.idl b/modules/worklet/WindowWorklet.idl
new file mode 100644
index 0000000000000000000000000000000000000000..8b98be2900e50133525963e47bfd526f5438060a
--- /dev/null
+++ b/modules/worklet/WindowWorklet.idl
@@ -0,0 +1,10 @@
+// Copyright 2016 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.
+
+[
+    ImplementedAs=DOMWindowWorklet,
+    RuntimeEnabled=Worklet,
+] partial interface Window {
+    [CallWith=ExecutionContext] readonly attribute Worklet renderWorklet;
+};