[Mojo Video Capture] Switch to using Mojo structs in media/capture/mojo

media/capture/mojo/video_capture_types.mojom

Index: media/capture/mojo/video_capture_types.mojom
diff --git a/media/capture/mojo/video_capture_types.mojom b/media/capture/mojo/video_capture_types.mojom
index d020527b0e114c3daf5dc842852b08db4bb91c35..00170cd81a519711bd4181291fb6610fde171f36 100644
--- a/media/capture/mojo/video_capture_types.mojom
+++ b/media/capture/mojo/video_capture_types.mojom
@@ -67,3 +67,16 @@ struct VideoFrameInfo{
   gfx.mojom.Size coded_size;
   gfx.mojom.Rect visible_rect;
 };
+
+struct VideoCaptureDeviceDescriptor {
+  string display_name;
+  string device_id;
+  string model_id;
+  VideoCaptureApi capture_api;
+  VideoCaptureTransportType transport_type;
+};
+
+struct VideoCaptureDeviceInfo {
+  VideoCaptureDeviceDescriptor descriptor;
+  array<VideoCaptureFormat> supported_formats;
+};