Parse USB interface association descriptors.

device/usb/usb_device_impl.cc

 // 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.
 
 #include "device/usb/usb_device_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 117 matching lines @@
           platform_alt_setting->extra,
           platform_alt_setting->extra + platform_alt_setting->extra_length);
 
       configuration->interfaces.push_back(interface);
     }
   }
 
   configuration->extra_data.assign(
       platform_config->extra,
       platform_config->extra + platform_config->extra_length);
+
+  configuration->AssignFirstInterfaceNumbers();
 }
 
 }  // namespace
 
 UsbDeviceImpl::UsbDeviceImpl(
     scoped_refptr<UsbContext> context,
     PlatformUsbDevice platform_device,
     uint16_t vendor_id,
     uint16_t product_id,
     scoped_refptr<base::SequencedTaskRunner> blocking_task_runner)
@@ skipping 181 matching lines @@
 void UsbDeviceImpl::Opened(PlatformUsbDeviceHandle platform_handle,
                            const OpenCallback& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   scoped_refptr<UsbDeviceHandleImpl> device_handle = new UsbDeviceHandleImpl(
       context_, this, platform_handle, blocking_task_runner_);
   handles_.push_back(device_handle);
   callback.Run(device_handle);
 }
 
 }  // namespace device