--- a/content/html/content/src/HTMLTrackElement.cpp
+++ b/content/html/content/src/HTMLTrackElement.cpp
@@ -149,16 +149,17 @@ HTMLTrackElement::CreateTextTrack()
   TextTrackKind kind;
   if (const nsAttrValue* value = GetParsedAttr(nsGkAtoms::kind)) {
     kind = static_cast<TextTrackKind>(value->GetEnumValue());
   } else {
     kind = TextTrackKind::Subtitles;
   }
 
   mTrack = new TextTrack(OwnerDoc()->GetParentObject(), kind, label, srcLang);
+  mTrack->SetTrackElement(this);
 
   if (mMediaParent) {
     mMediaParent->AddTextTrack(mTrack);
   }
 }
 
 bool
 HTMLTrackElement::ParseAttribute(int32_t aNamespaceID,

--- a/content/media/TextTrack.cpp
+++ b/content/media/TextTrack.cpp
@@ -11,22 +11,23 @@
 #include "mozilla/dom/TextTrackCueList.h"
 #include "mozilla/dom/TextTrackRegion.h"
 #include "mozilla/dom/HTMLMediaElement.h"
 #include "mozilla/dom/HTMLTrackElement.h"
 
 namespace mozilla {
 namespace dom {
 
-NS_IMPL_CYCLE_COLLECTION_INHERITED_4(TextTrack,
+NS_IMPL_CYCLE_COLLECTION_INHERITED_5(TextTrack,
                                      nsDOMEventTargetHelper,
                                      mParent,
                                      mCueList,
                                      mActiveCueList,
-                                     mTextTrackList)
+                                     mTextTrackList,
+                                     mTrackElement)
 
 NS_IMPL_ADDREF_INHERITED(TextTrack, nsDOMEventTargetHelper)
 NS_IMPL_RELEASE_INHERITED(TextTrack, nsDOMEventTargetHelper)
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TextTrack)
 NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
 
 TextTrack::TextTrack(nsISupports* aParent)
   : mParent(aParent)
@@ -206,10 +207,20 @@ TextTrack::GetTextTrackList()
 }
 
 void
 TextTrack::SetTextTrackList(TextTrackList* aTextTrackList)
 {
   mTextTrackList = aTextTrackList;
 }
 
+HTMLTrackElement*
+TextTrack::GetTrackElement() {
+  return mTrackElement;
+}
+
+void
+TextTrack::SetTrackElement(HTMLTrackElement* aTrackElement) {
+  mTrackElement = aTrackElement;
+}
+
 } // namespace dom
 } // namespace mozilla

--- a/content/media/TextTrack.h
+++ b/content/media/TextTrack.h
@@ -15,16 +15,17 @@
 
 namespace mozilla {
 namespace dom {
 
 class TextTrackList;
 class TextTrackCue;
 class TextTrackCueList;
 class TextTrackRegion;
+class HTMLTrackElement;
 
 class TextTrack MOZ_FINAL : public nsDOMEventTargetHelper
 {
 public:
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(TextTrack, nsDOMEventTargetHelper)
 
   TextTrack(nsISupports* aParent);
@@ -94,31 +95,35 @@ public:
   void CueChanged(TextTrackCue& aCue);
   void SetDirty() { mDirty = true; }
 
   TextTrackList* GetTextTrackList();
   void SetTextTrackList(TextTrackList* aTextTrackList);
 
   IMPL_EVENT_HANDLER(cuechange)
 
+  HTMLTrackElement* GetTrackElement();
+  void SetTrackElement(HTMLTrackElement* aTrackElement);
+
 private:
   void UpdateActiveCueList();
 
   nsCOMPtr<nsISupports> mParent;
   nsRefPtr<TextTrackList> mTextTrackList;
 
   TextTrackKind mKind;
   nsString mLabel;
   nsString mLanguage;
   nsString mType;
   nsString mId;
   TextTrackMode mMode;
 
   nsRefPtr<TextTrackCueList> mCueList;
   nsRefPtr<TextTrackCueList> mActiveCueList;
+  nsRefPtr<HTMLTrackElement> mTrackElement;
 
   uint32_t mCuePos;
   uint16_t mReadyState;
   bool mDirty;
 };
 
 } // namespace dom
 } // namespace mozilla