Extracted UsbConfigDescriptor, UsbInterfaceDescriptor and helper classes

extensions/browser/api/usb/usb_apitest.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 "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/ui/browser.h"
 #include "components/usb_service/usb_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/api/usb/usb_api.h"
 #include "net/base/io_buffer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using testing::AnyNumber;
 using testing::_;
 using testing::Return;
 using content::BrowserThread;
 using usb_service::UsbConfigDescriptor;
 using usb_service::UsbDevice;
 using usb_service::UsbDeviceHandle;
 using usb_service::UsbEndpointDirection;
+using usb_service::UsbInterfaceDescriptor;
 using usb_service::UsbService;
 using usb_service::UsbTransferCallback;
 
 namespace {
 
 ACTION_TEMPLATE(InvokeUsbTransferCallback,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_1_VALUE_PARAMS(p1)) {
   net::IOBuffer* io_buffer = new net::IOBuffer(1);
   memset(io_buffer->data(), 0, 1);  // Avoid uninitialized reads.
@@ skipping 56 matching lines @@
 
   void set_device(UsbDevice* device) { device_ = device; }
 
  protected:
   virtual ~MockUsbDeviceHandle() {}
 };
 
 class MockUsbConfigDescriptor : public UsbConfigDescriptor {
  public:
   MOCK_CONST_METHOD0(GetNumInterfaces, size_t());
+  MOCK_CONST_METHOD1(GetInterface,
+                     scoped_refptr<const UsbInterfaceDescriptor>(size_t index));
 
  protected:
   virtual ~MockUsbConfigDescriptor() {}
 };
 
 class MockUsbDevice : public UsbDevice {
  public:
   explicit MockUsbDevice(MockUsbDeviceHandle* mock_handle)
       : UsbDevice(0, 0, 0), mock_handle_(mock_handle) {
     mock_handle->set_device(this);
@@ skipping 160 matching lines @@
       .WillOnce(
           InvokeUsbTransferCallback<5>(usb_service::USB_TRANSFER_TIMEOUT));
   EXPECT_CALL(*mock_device_handle_.get(), Close()).Times(AnyNumber());
   ASSERT_TRUE(RunExtensionTest("usb/transfer_failure"));
 }
 
 IN_PROC_BROWSER_TEST_F(UsbApiTest, InvalidLengthTransfer) {
   EXPECT_CALL(*mock_device_handle_.get(), Close()).Times(AnyNumber());
   ASSERT_TRUE(RunExtensionTest("usb/invalid_length_transfer"));
 }