--- a/dom/media/MediaStreamTrack.cpp
+++ b/dom/media/MediaStreamTrack.cpp
@@ -264,19 +264,28 @@ MediaStreamTrack::Stop()
 
 void
 MediaStreamTrack::GetConstraints(dom::MediaTrackConstraints& aResult)
 {
   aResult = mConstraints;
 }
 
 void
-MediaStreamTrack::GetSettings(dom::MediaTrackSettings& aResult)
+MediaStreamTrack::GetSettings(dom::MediaTrackSettings& aResult, CallerType aCallerType)
 {
   GetSource().GetSettings(aResult);
+
+  // Spoof values when privacy.resistFingerprinting is true.
+  if (!nsContentUtils::ResistFingerprinting(aCallerType)) {
+    return;
+  }
+  if (aResult.mFacingMode.WasPassed()) {
+    aResult.mFacingMode.Value().Assign(NS_ConvertASCIItoUTF16(
+        VideoFacingModeEnumValues::strings[uint8_t(VideoFacingModeEnum::User)].value));
+  }
 }
 
 already_AddRefed<Promise>
 MediaStreamTrack::ApplyConstraints(const MediaTrackConstraints& aConstraints,
                                    CallerType aCallerType,
                                    ErrorResult &aRv)
 {
   if (MOZ_LOG_TEST(gMediaStreamTrackLog, LogLevel::Info)) {

--- a/dom/media/MediaStreamTrack.h
+++ b/dom/media/MediaStreamTrack.h
@@ -283,17 +283,17 @@ public:
   // WebIDL
   virtual void GetKind(nsAString& aKind) = 0;
   void GetId(nsAString& aID) const;
   virtual void GetLabel(nsAString& aLabel, CallerType /* aCallerType */) { GetSource().GetLabel(aLabel); }
   bool Enabled() { return mEnabled; }
   void SetEnabled(bool aEnabled);
   void Stop();
   void GetConstraints(dom::MediaTrackConstraints& aResult);
-  void GetSettings(dom::MediaTrackSettings& aResult);
+  void GetSettings(dom::MediaTrackSettings& aResult, CallerType aCallerType);
 
   already_AddRefed<Promise>
   ApplyConstraints(const dom::MediaTrackConstraints& aConstraints,
                    CallerType aCallerType, ErrorResult &aRv);
   already_AddRefed<MediaStreamTrack> Clone();
   MediaStreamTrackState ReadyState() { return mReadyState; }
 
   IMPL_EVENT_HANDLER(ended)

--- a/dom/webidl/MediaStreamTrack.webidl
+++ b/dom/webidl/MediaStreamTrack.webidl
@@ -86,14 +86,15 @@ interface MediaStreamTrack : EventTarget
 //  readonly    attribute boolean               _readonly;
 //  readonly    attribute boolean               remote;
     readonly    attribute MediaStreamTrackState readyState;
                 attribute EventHandler          onended;
     MediaStreamTrack       clone ();
     void                   stop ();
 //  MediaTrackCapabilities getCapabilities ();
     MediaTrackConstraints  getConstraints ();
+    [NeedsCallerType]
     MediaTrackSettings     getSettings ();
 
     [Throws, NeedsCallerType]
     Promise<void>          applyConstraints (optional MediaTrackConstraints constraints);
 //              attribute EventHandler          onoverconstrained;
 };