Construct USB descriptors over explicit values.

chrome/browser/chromeos/printer_detector/printer_detector_unittest.cc

 // Copyright (c) 2012 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 "chrome/browser/chromeos/printer_detector/printer_detector.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 103 matching lines @@
     chromeos::ProfileHelper::Get()->SetUserToProfileMappingForTesting(
         user, profile_.get());
     chromeos::PrinterDetectorFactory::GetInstance()
         ->Get(profile_.get())
         ->SetNotificationUIManagerForTesting(&notification_ui_manager_);
   }
 
   void InvokeUsbAdded(uint16_t vendor_id,
                       uint16_t product_id,
                       uint8_t interface_class) {
-    device::UsbInterfaceDescriptor interface;
-    interface.interface_number = 1;
-    interface.interface_class = interface_class;
-    device::UsbConfigDescriptor config;
-    config.interfaces.push_back(interface);
+    device::UsbConfigDescriptor config(1, false, false, 0);
+    config.interfaces.emplace_back(1, 0, interface_class, 0, 0);
     usb_service_.AddDevice(
         new device::MockUsbDevice(vendor_id, product_id, config));
   }
 
   // Creates a test extension with the provided permissions.
   scoped_refptr<extensions::Extension> CreateTestExtension(
       ListBuilder permissions_builder,
       DictionaryBuilder usb_printers_builder) {
     return extensions::ExtensionBuilder()
         .SetID("fake_extension_id")
@@ skipping 192 matching lines @@
                   .Set("interfaceClass", kPrinterInterfaceClass)))))));
   ASSERT_TRUE(extensions::ExtensionRegistry::Get(profile_.get())
                   ->AddEnabled(extension));
 
   InvokeUsbAdded(123, 456, 1);
 
   ASSERT_EQ(0u, notification_ui_manager_.GetNotificationCount());
 }
 
 }  // namespace chromeos