Add FacingMode to MediaStreamTrack.getSettings()

content/renderer/media/media_stream_video_track.cc

Index: content/renderer/media/media_stream_video_track.cc
diff --git a/content/renderer/media/media_stream_video_track.cc b/content/renderer/media/media_stream_video_track.cc
index dede54fecb104f1e46e97f43eb0ba1d2ed1dea20..e9eece0b225735ff86db11ac0a2239d4f6903012 100644
--- a/content/renderer/media/media_stream_video_track.cc
+++ b/content/renderer/media/media_stream_video_track.cc
@@ -308,6 +308,21 @@ void MediaStreamVideoTrack::getSettings(
       settings.width = format->frame_size.width();
       settings.height = format->frame_size.height();
     }
+    switch (source_->device_info().device.video_facing) {
+      case MEDIA_VIDEO_FACING_NONE:
+        settings.facingMode = blink::WebMediaStreamTrack::FacingMode::None;
+        break;
+      case MEDIA_VIDEO_FACING_USER:
+        settings.facingMode = blink::WebMediaStreamTrack::FacingMode::User;
+        break;
+      case MEDIA_VIDEO_FACING_ENVIRONMENT:
+        settings.facingMode =
+            blink::WebMediaStreamTrack::FacingMode::Environment;
+        break;
+      default:
+        settings.facingMode = blink::WebMediaStreamTrack::FacingMode::None;
+        break;
+    }
   }
   // TODO(hta): Extract the real value.
   settings.deviceId = blink::WebString("video device ID");