[Mojo Video Capture] Use actual factory instances implementing media::VideoCaptureDeviceFactory

services/video_capture/device_mock_to_media_adapter.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_DEVICE_MOCK_TO_MEDIA_ADAPTER_H_
 #define SERVICES_VIDEO_CAPTURE_DEVICE_MOCK_TO_MEDIA_ADAPTER_H_
 
 #include "media/capture/video/video_capture_device.h"
 #include "services/video_capture/public/interfaces/mock_video_capture_device.mojom.h"
 
 namespace video_capture {
 
 // Adapter that allows a mojom::MockVideoCaptureDevice to be used in place of
 // a media::VideoCaptureDevice. This is useful for plugging a mock devices into
 // the service and testing that the service makes expected calls to the
 // media::VideoCaptureDevice interface.
 class DeviceMockToMediaAdapter : public media::VideoCaptureDevice {
  public:
-  DeviceMockToMediaAdapter(mojom::MockVideoCaptureDevicePtr device);
+  DeviceMockToMediaAdapter(mojom::MockVideoCaptureDevicePtr* device);
   ~DeviceMockToMediaAdapter() override;
 
   // media::VideoCaptureDevice:
   void AllocateAndStart(const media::VideoCaptureParams& params,
                         std::unique_ptr<Client> client) override;
   void RequestRefreshFrame() override;
   void StopAndDeAllocate() override;
   void GetPhotoCapabilities(GetPhotoCapabilitiesCallback callback) override;
   void SetPhotoOptions(media::mojom::PhotoSettingsPtr settings,
                        SetPhotoOptionsCallback callback) override;
   void TakePhoto(TakePhotoCallback callback) override;
 
  private:
-  mojom::MockVideoCaptureDevicePtr device_;
+  mojom::MockVideoCaptureDevicePtr* const device_;
 };
 
 }  // namespace video_capture
 
 #endif  // SERVICES_VIDEO_CAPTURE_DEVICE_MOCK_TO_MEDIA_ADAPTER_H_