[Mojo Video Capture] Add Mojo Typemap for VideoCaptureDeviceDescriptor

services/video_capture/public/interfaces/video_capture_settings_traits.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_PUBLIC_INTERFACES_VIDEO_CAPTURE_SETTINGS_TRAITS_H_
 #define SERVICES_VIDEO_CAPTURE_PUBLIC_INTERFACES_VIDEO_CAPTURE_SETTINGS_TRAITS_H_
 
 #include "media/capture/video_capture_types.h"
 #include "mojo/common/common_custom_types_struct_traits.h"
 #include "services/video_capture/public/interfaces/video_capture_device_proxy.mojom.h"
@@ skipping 30 matching lines @@
   }
 
   static media::PowerLineFrequency power_line_frequency(
       const video_capture::VideoCaptureSettings& input) {
     return input.power_line_frequency;
   }
 
   static bool Read(video_capture::mojom::VideoCaptureSettingsDataView data,
                    video_capture::VideoCaptureSettings* out);
 };
+
 }
 
 #endif  // SERVICES_VIDEO_CAPTURE_PUBLIC_INTERFACES_VIDEO_CAPTURE_SETTINGS_TRAITS_H_