Bug 1296531 - Notify MSG track listeners of removal during shutdown. r=jesup

MozReview-Commit-ID: BnWrUUvE5qk

--HG--
extra : rebase_source : d205097a8fd9e831af9ba4638b1e957224a546a9

dom/media/MediaStreamGraph.cpp

@@ -2480,6 +2480,12 @@ MediaStream::RemoveTrackListener(MediaStreamTrackListener* aListener,
     {
       mStream->RemoveTrackListenerImpl(mListener, mTrackID);
     }
+    void RunDuringShutdown() override
+    {
+      // During shutdown we still want the listener's NotifyRemoved to be
+      // called, since not doing that might block shutdown of other modules.
+      Run();
+    }
     RefPtr<MediaStreamTrackListener> mListener;
     TrackID mTrackID;
   };
@@ -2536,6 +2542,13 @@ MediaStream::RemoveDirectTrackListener(DirectMediaStreamTrackListener* aListener
     {
       mStream->RemoveDirectTrackListenerImpl(mListener, mTrackID);
     }
+    void RunDuringShutdown() override
+    {
+      // During shutdown we still want the listener's
+      // NotifyDirectListenerUninstalled to be called, since not doing that
+      // might block shutdown of other modules.
+      Run();
+    }
     RefPtr<DirectMediaStreamTrackListener> mListener;
     TrackID mTrackID;
   };