Track USB endpoint state in Blink.

device/usb/mojo/type_converters.cc

 // 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.
 
 #include "device/usb/mojo/type_converters.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
@@ skipping 120 matching lines @@
       NOTREACHED();
       return device::usb::EndpointType::BULK;
   }
 }
 
 // static
 device::usb::EndpointInfoPtr
 TypeConverter<device::usb::EndpointInfoPtr, device::UsbEndpointDescriptor>::
     Convert(const device::UsbEndpointDescriptor& endpoint) {
   device::usb::EndpointInfoPtr info = device::usb::EndpointInfo::New();
-  info->endpoint_number = endpoint.address;
+  info->endpoint_number = endpoint.address & 0xf;
   info->direction =
       ConvertTo<device::usb::TransferDirection>(endpoint.direction);
   info->type = ConvertTo<device::usb::EndpointType>(endpoint.transfer_type);
   info->packet_size = static_cast<uint32_t>(endpoint.maximum_packet_size);
   return info;
 }
 
 // static
 device::usb::AlternateInterfaceInfoPtr
 TypeConverter<device::usb::AlternateInterfaceInfoPtr,
@@ skipping 127 matching lines @@
     Convert(const device::UsbDeviceHandle::IsochronousPacket& packet) {
   device::usb::IsochronousPacketPtr info =
       device::usb::IsochronousPacket::New();
   info->length = packet.length;
   info->transferred_length = packet.transferred_length;
   info->status = mojo::ConvertTo<device::usb::TransferStatus>(packet.status);
   return info;
 }
 
 }  // namespace mojo