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

modules/webusb/USBConnectionEvent.idl

Index: modules/webusb/USBConnectionEvent.idl
diff --git a/modules/webusb/USBConnectionEvent.idl b/modules/webusb/USBConnectionEvent.idl
new file mode 100644
index 0000000000000000000000000000000000000000..beaba0e9c7a8cc2a4def5c19bdbb7b569bcae2f8
--- /dev/null
+++ b/modules/webusb/USBConnectionEvent.idl
@@ -0,0 +1,12 @@
+// 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.
+
+// http://wicg.github.io/webusb/#events
+
+[
+    Constructor(DOMString type, optional USBConnectionEventInit eventInitDict),
+    RuntimeEnabled=WebUSB,
+] interface USBConnectionEvent : Event {
+    readonly attribute USBDevice device;
+};