Replace manual conversions with Mojo type mappings

services/video_capture/fake_device_descriptor_test.h

 // Copyright 2016 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.
 
 #ifndef SERVICES_VIDEO_CAPTURE_FAKE_DEVICE_DESCRIPTOR_TEST_H_
 #define SERVICES_VIDEO_CAPTURE_FAKE_DEVICE_DESCRIPTOR_TEST_H_
 
 #include "services/video_capture/video_capture_service_test.h"
 
 namespace video_capture {
 
 // Test fixture that obtains the descriptor of the fake device by enumerating
 // the devices of the fake device factory.
 class FakeDeviceDescriptorTest : public VideoCaptureServiceTest {
  public:
   FakeDeviceDescriptorTest();
   ~FakeDeviceDescriptorTest() override;
 
   void SetUp() override;
 
  protected:
-  mojom::VideoCaptureDeviceDescriptorPtr fake_device_descriptor_;
+  media::VideoCaptureDeviceDescriptor fake_device_descriptor_;
 };
 
 }  // namespace video_capture
 
 #endif  // SERVICES_VIDEO_CAPTURE_FAKE_DEVICE_DESCRIPTOR_TEST_H_