Update webusb_descriptors.cc to parse the new WebUSB descriptors.

device/devices_app/usb/device_impl_unittest.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/devices_app/usb/device_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <map>
 #include <queue>
 #include <set>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/stl_util.h"
 #include "device/devices_app/usb/fake_permission_provider.h"
 #include "device/usb/mock_usb_device.h"
 #include "device/usb/mock_usb_device_handle.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
+#include "net/base/io_buffer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::Invoke;
 using ::testing::_;
 
 namespace device {
 namespace usb {
 
 namespace {
 
@@ skipping 774 matching lines @@
         1, 4, 8, 0, base::Bind(&ExpectPacketsAndThen, TransferStatus::COMPLETED,
                                packets, loop.QuitClosure()));
     loop.Run();
   }
 
   EXPECT_CALL(mock_handle(), Close());
 }
 
 }  // namespace usb
 }  // namespace device