Revert of [Mojo Video Capture] Adapt video_capture service to refactored video capture stack

services/video_capture/device_factory_media_to_mojo_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_FACTORY_MEDIA_TO_MOJO_ADAPTER_H_
 #define SERVICES_VIDEO_CAPTURE_DEVICE_FACTORY_MEDIA_TO_MOJO_ADAPTER_H_
 
 #include <map>
 
 #include "media/capture/video/video_capture_device_client.h"
-#include "media/capture/video/video_capture_system.h"
+#include "media/capture/video/video_capture_device_factory.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "services/video_capture/public/interfaces/device_factory.mojom.h"
 
 namespace video_capture {
 
 class DeviceMediaToMojoAdapter;
 
-// Wraps a media::VideoCaptureSystem and exposes its functionality through the
-// mojom::DeviceFactory interface. Keeps track of device instances that have
-// been created to ensure that it does not create more than one instance of the
-// same media::VideoCaptureDevice at the same time.
+// Wraps a media::VideoCaptureDeviceFactory and exposes its functionality
+// through the mojom::DeviceFactory interface.
+// Keeps track of device instances that have been created to ensure that
+// it does not create more than one instance of the same
+// media::VideoCaptureDevice at the same time.
 class DeviceFactoryMediaToMojoAdapter : public mojom::DeviceFactory {
  public:
   DeviceFactoryMediaToMojoAdapter(
-      std::unique_ptr<media::VideoCaptureSystem> capture_system,
+      std::unique_ptr<media::VideoCaptureDeviceFactory> device_factory,
       const media::VideoCaptureJpegDecoderFactoryCB&
           jpeg_decoder_factory_callback);
   ~DeviceFactoryMediaToMojoAdapter() override;
 
   // mojom::DeviceFactory:
   void GetDeviceInfos(const GetDeviceInfosCallback& callback) override;
   void CreateDevice(const std::string& device_id,
                     mojom::DeviceRequest device_request,
                     const CreateDeviceCallback& callback) override;
 
  private:
   struct ActiveDeviceEntry {
     ActiveDeviceEntry();
     ~ActiveDeviceEntry();
     ActiveDeviceEntry(ActiveDeviceEntry&& other);
     ActiveDeviceEntry& operator=(ActiveDeviceEntry&& other);
 
     std::unique_ptr<DeviceMediaToMojoAdapter> device;
     // TODO(chfremer) Use mojo::Binding<> directly instead of unique_ptr<> when
     // mojo::Binding<> supports move operators.
     // https://crbug.com/644314
     std::unique_ptr<mojo::Binding<mojom::Device>> binding;
   };
 
   void OnClientConnectionErrorOrClose(const std::string& device_id);
 
-  const std::unique_ptr<media::VideoCaptureSystem> capture_system_;
+  // Returns false if no descriptor found.
+  bool LookupDescriptorFromId(const std::string& device_id,
+                              media::VideoCaptureDeviceDescriptor* descriptor);
+
+  const std::unique_ptr<media::VideoCaptureDeviceFactory> device_factory_;
   const media::VideoCaptureJpegDecoderFactoryCB jpeg_decoder_factory_callback_;
   std::map<std::string, ActiveDeviceEntry> active_devices_by_id_;
 };
 
 }  // namespace video_capture
 
 #endif  // SERVICES_VIDEO_CAPTURE_DEVICE_FACTORY_MEDIA_TO_MOJO_ADAPTER_H_