Get all the UsbConfigDescriptor for the device configuration

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 "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 55 matching lines @@
   // device::UsbDevice overrides:
   void Open(const OpenCallback& callback) override {
     ADD_FAILURE() << "Not reached";
   }
 
   bool Close(scoped_refptr<device::UsbDeviceHandle> handle) override {
     ADD_FAILURE() << "Not reached";
     return false;
   }
 
-  const device::UsbConfigDescriptor* GetConfiguration() override {
+  const device::UsbConfigDescriptor* GetCurrentConfiguration() override {
     return config_.get();
   }
 
+  const std::vector<device::UsbConfigDescriptor>& configurations()
+      const override {
+    return configurations_;
+  }
+
   scoped_ptr<device::UsbConfigDescriptor> config_;
+  std::vector<device::UsbConfigDescriptor> configurations_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeUsbDevice);
 };
 
 class FakeDeviceClient : public device::DeviceClient {
  public:
   FakeDeviceClient() : usb_service_(nullptr) {}
 
   ~FakeDeviceClient() override {}
 
@@ skipping 270 matching lines @@
                       .Set("interfaceClass", kPrinterInterfaceClass)))).Pass();
   ASSERT_TRUE(extensions::ExtensionRegistry::Get(profile_.get())
                   ->AddEnabled(extension));
 
   InvokeUsbAdded(123, 456, 1);
 
   ASSERT_EQ(0u, notification_ui_manager_.GetNotificationCount());
 }
 
 }  // namespace chromeos