--- a/dom/media/MediaDecoder.cpp
+++ b/dom/media/MediaDecoder.cpp
@@ -1120,17 +1120,17 @@ MediaDecoder::NotifyBytesConsumed(int64_
   MOZ_ASSERT(mDecoderStateMachine);
   if (aOffset >= mDecoderPosition) {
     mPlaybackStatistics->AddBytes(aBytes);
   }
   mDecoderPosition = aOffset + aBytes;
 }
 
 void
-MediaDecoder::OnSeekResolved(SeekResolveValue aVal)
+MediaDecoder::OnSeekResolved()
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(!IsShutdown());
   mSeekRequest.Complete();
 
   {
     // An additional seek was requested while the current seek was
     // in operation.

--- a/dom/media/MediaDecoder.h
+++ b/dom/media/MediaDecoder.h
@@ -53,19 +53,16 @@ enum class MediaEventType : int8_t;
 // GetTickCount() and conflicts with MediaDecoder::GetCurrentTime implementation.
 #ifdef GetCurrentTime
 #undef GetCurrentTime
 #endif
 
 class MediaDecoder : public AbstractMediaDecoder
 {
 public:
-  struct SeekResolveValue {
-  };
-
   // Used to register with MediaResource to receive notifications which will
   // be forwarded to MediaDecoder.
   class ResourceCallback : public MediaResourceCallback {
     // Throttle calls to MediaDecoder::NotifyDataArrived()
     // to be at most once per 500ms.
     static const uint32_t sDelay = 500;
 
   public:
@@ -90,17 +87,17 @@ public:
     static void TimerCallback(nsITimer* aTimer, void* aClosure);
 
     // The decoder to send notifications. Main-thread only.
     MediaDecoder* mDecoder = nullptr;
     nsCOMPtr<nsITimer> mTimer;
     bool mTimerArmed = false;
   };
 
-  typedef MozPromise<SeekResolveValue, bool /* aIgnored */, /* IsExclusive = */ true> SeekPromise;
+  typedef MozPromise<bool /* aIgnored */, bool /* aIgnored */, /* IsExclusive = */ true> SeekPromise;
 
   NS_DECL_THREADSAFE_ISUPPORTS
 
   // Enumeration for the valid play states (see mPlayState)
   enum PlayState {
     PLAY_STATE_START,
     PLAY_STATE_LOADING,
     PLAY_STATE_PAUSED,
@@ -380,17 +377,17 @@ private:
   // the track list. Call on the main thread only.
   void RemoveMediaTracks();
 
   // Called when the video has completed playing.
   // Call on the main thread only.
   void PlaybackEnded();
 
   void OnSeekRejected();
-  void OnSeekResolved(SeekResolveValue aVal);
+  void OnSeekResolved();
 
   void SeekingChanged()
   {
     // Stop updating the bytes downloaded for progress notifications when
     // seeking to prevent wild changes to the progress notification.
     MOZ_ASSERT(NS_IsMainThread());
     mIgnoreProgressData = mLogicallySeeking;
   }

--- a/dom/media/SeekJob.cpp
+++ b/dom/media/SeekJob.cpp
@@ -36,18 +36,17 @@ SeekJob& SeekJob::operator=(SeekJob&& aO
 bool SeekJob::Exists() const
 {
   MOZ_ASSERT(mTarget.IsValid() == !mPromise.IsEmpty());
   return mTarget.IsValid();
 }
 
 void SeekJob::Resolve(const char* aCallSite)
 {
-  MediaDecoder::SeekResolveValue val;
-  mPromise.Resolve(val, aCallSite);
+  mPromise.Resolve(true, aCallSite);
   mTarget.Reset();
 }
 
 void SeekJob::RejectIfExists(const char* aCallSite)
 {
   mTarget.Reset();
   mPromise.RejectIfExists(true, aCallSite);
 }