--- a/dom/media/MediaData.h
+++ b/dom/media/MediaData.h
@@ -637,16 +637,20 @@ public:
 
   const CryptoSample& mCrypto;
   RefPtr<MediaByteBuffer> mExtraData;
 
   // Used by the Vorbis decoder and Ogg demuxer.
   // Indicates that this is the last packet of the stream.
   bool mEOS = false;
 
+  // Indicate to the audio decoder that mDiscardPadding frames should be
+  // trimmed.
+  uint32_t mDiscardPadding = 0;
+
   RefPtr<SharedTrackInfo> mTrackInfo;
 
   // Return a deep copy or nullptr if out of memory.
   virtual already_AddRefed<MediaRawData> Clone() const;
   // Create a MediaRawDataWriter for this MediaRawData. The caller must
   // delete the writer once done. The writer is not thread-safe.
   virtual MediaRawDataWriter* CreateWriter();
   virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;