Track USB alternate interface state in Blink.

third_party/WebKit/Source/modules/webusb/USBDevice.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.
 
 // http://wicg.github.io/webusb/#idl-def-usbtransferstatus
 
 enum USBTransferStatus {
     "ok",
     "stall",
     "babble"
@@ skipping 22 matching lines @@
     readonly attribute DOMString? serialNumber;
     readonly attribute USBConfiguration? configuration;
     readonly attribute sequence<USBConfiguration> configurations;
     readonly attribute boolean opened;
 
     [CallWith=ScriptState] Promise<void> open();
     [CallWith=ScriptState] Promise<void> close();
     [CallWith=ScriptState] Promise<void> selectConfiguration(octet configurationValue);
     [CallWith=ScriptState] Promise<void> claimInterface(octet interfaceNumber);
     [CallWith=ScriptState] Promise<void> releaseInterface(octet interfaceNumber);
-    [CallWith=ScriptState] Promise<void> setInterface(octet interfaceNumber, octet alternateSetting);
+    [CallWith=ScriptState] Promise<void> selectAlternateInterface(octet interfaceNumber, octet alternateSetting);
     [CallWith=ScriptState] Promise<USBInTransferResult> controlTransferIn(USBControlTransferParameters setup, unsigned short length);
     [CallWith=ScriptState] Promise<USBOutTransferResult> controlTransferOut(USBControlTransferParameters setup, optional BufferSource data);
     [CallWith=ScriptState] Promise<void> clearHalt(USBDirection direction, octet endpointNumber);
     [CallWith=ScriptState] Promise<USBInTransferResult> transferIn(octet endpointNumber, unsigned long length);
     [CallWith=ScriptState] Promise<USBOutTransferResult> transferOut(octet endpointNumber, BufferSource data);
     [CallWith=ScriptState] Promise<USBIsochronousInTransferResult>  isochronousTransferIn(octet endpointNumber, sequence<unsigned long> packetLengths);
     [CallWith=ScriptState] Promise<UsbIsochronousOutTransferResult> isochronousTransferOut(octet endpointNumber, BufferSource data, sequence<unsigned long> packetLengths);
     [CallWith=ScriptState] Promise<void> reset();
 };