WebUSB bindings part 6

Source/modules/webusb/USBControlTransferParameters.idl

+// 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.
+
+enum USBRequestType {
+    "standard",
+    "class",
+    "vendor"
+};
+
+enum USBRecipient {
+    "device",
+    "interface",
+    "endpoint",
+    "other",
+};
+
+dictionary USBControlTransferParameters {
+    required USBRequestType requestType;
+    required USBRecipient recipient;
+    required octet request;
+    required unsigned short value;
+    required unsigned short index;
+};