--- a/gfx/layers/ipc/CompositorBridgeParent.h
+++ b/gfx/layers/ipc/CompositorBridgeParent.h
@@ -288,17 +288,17 @@ public:
   void InvalidateOnCompositorThread();
   /**
    * Returns true if a surface was obtained and the resume succeeded; false
    * otherwise.
    */
   bool ScheduleResumeOnCompositorThread();
   bool ScheduleResumeOnCompositorThread(int width, int height);
 
-  virtual void ScheduleComposition();
+  void ScheduleComposition();
   void NotifyShadowTreeTransaction(uint64_t aId, bool aIsFirstPaint,
       const FocusTarget& aFocusTarget,
       bool aScheduleComposite, uint32_t aPaintSequenceNumber,
       bool aIsRepeatTransaction, bool aHitTestUpdate);
 
   void UpdatePaintTime(LayerTransactionParent* aLayerTree,
                        const TimeDuration& aPaintTime) override;