[Mojo Video Capture] Hook up video capture service behind a feature flag

services/video_capture/device_factory_media_to_mojo_adapter.cc

 // 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.
 
 #include "services/video_capture/device_factory_media_to_mojo_adapter.h"
 
 #include <sstream>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 17 matching lines @@
 // instead of VideoCaptureSystem.
 static void TranslateDeviceInfos(
     const video_capture::mojom::DeviceFactory::GetDeviceInfosCallback& callback,
     const std::vector<media::VideoCaptureDeviceInfo>& device_infos) {
   std::vector<media::VideoCaptureDeviceInfo> translated_device_infos;
   for (const auto& device_info : device_infos) {
     media::VideoCaptureDeviceInfo translated_device_info;
     translated_device_info.descriptor = device_info.descriptor;
     for (const auto& format : device_info.supported_formats) {
       media::VideoCaptureFormat translated_format;
-      switch (format.pixel_format) {
-        case media::PIXEL_FORMAT_I420:
-        case media::PIXEL_FORMAT_MJPEG:
-          translated_format.pixel_format = media::PIXEL_FORMAT_I420;
-          break;
-        case media::PIXEL_FORMAT_Y16:
-          translated_format.pixel_format = media::PIXEL_FORMAT_Y16;
-        default:
-          // Any other format cannot be consumed by VideoCaptureDeviceClient.
-          continue;
-      }
+      translated_format.pixel_format =
+          (format.pixel_format == media::PIXEL_FORMAT_Y16)
+              ? media::PIXEL_FORMAT_Y16
+              : media::PIXEL_FORMAT_I420;
       translated_format.frame_size = format.frame_size;
       translated_format.frame_rate = format.frame_rate;
       translated_format.pixel_storage = media::PIXEL_STORAGE_CPU;
       if (base::ContainsValue(translated_device_info.supported_formats,
                               translated_format))
         continue;
       translated_device_info.supported_formats.push_back(translated_format);
     }
     if (translated_device_info.supported_formats.empty())
       continue;
@@ skipping 104 matching lines @@
   callback.Run(mojom::DeviceAccessResultCode::SUCCESS);
 }
 
 void DeviceFactoryMediaToMojoAdapter::OnClientConnectionErrorOrClose(
     const std::string& device_id) {
   active_devices_by_id_[device_id].device->Stop();
   active_devices_by_id_.erase(device_id);
 }
 
 }  // namespace video_capture