[Mojo Video Capture] Simplify API and some cleanups

services/video_capture/video_capture_service.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_VIDEO_CAPTURE_SERVICE_H_
 #define SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_
 
 #include <memory>
 
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/service_manager/public/cpp/service.h"
 #include "services/video_capture/public/interfaces/video_capture_service.mojom.h"
 
 namespace video_capture {
 
 class VideoCaptureDeviceFactoryImpl;
-class FakeVideoCaptureDeviceFactoryConfiguratorImpl;
 
 // Implementation of mojom::VideoCaptureService as a Service Manager service.
 class VideoCaptureService
     : public service_manager::Service,
       public service_manager::InterfaceFactory<mojom::VideoCaptureService>,
       public mojom::VideoCaptureService {
  public:
   VideoCaptureService();
   ~VideoCaptureService() override;
 
@@ skipping 27 matching lines @@
   mojo::BindingSet<mojom::VideoCaptureDeviceFactory> fake_factory_bindings_;
   mojo::BindingSet<mojom::VideoCaptureDeviceFactory> mock_factory_bindings_;
   std::unique_ptr<VideoCaptureDeviceFactoryImpl> device_factory_;
   std::unique_ptr<VideoCaptureDeviceFactoryImpl> fake_device_factory_;
   std::unique_ptr<VideoCaptureDeviceFactoryImpl> mock_device_factory_;
 };
 
 }  // namespace video_capture
 
 #endif  // SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_