diff --git a/gfx/layers/apz/src/AsyncPanZoomController.cpp b/gfx/layers/apz/src/AsyncPanZoomController.cpp
index 447870b10b77..bd4cda7814dd 100644
--- a/gfx/layers/apz/src/AsyncPanZoomController.cpp
+++ b/gfx/layers/apz/src/AsyncPanZoomController.cpp
@@ -2954,6 +2954,11 @@ bool AsyncPanZoomController::IsPannable() const {
   return mX.CanScroll() || mY.CanScroll();
 }
 
+bool AsyncPanZoomController::IsScrollInfoLayer() const {
+  ReentrantMonitorAutoEnter lock(mMonitor);
+  return mFrameMetrics.IsScrollInfoLayer();
+}
+
 int32_t AsyncPanZoomController::GetLastTouchIdentifier() const {
   RefPtr<GestureEventListener> listener = GetGestureEventListener();
   return listener ? listener->GetLastTouchIdentifier() : -1;
diff --git a/gfx/layers/apz/src/AsyncPanZoomController.h b/gfx/layers/apz/src/AsyncPanZoomController.h
index ca35aa75cf43..1972510a1213 100644
--- a/gfx/layers/apz/src/AsyncPanZoomController.h
+++ b/gfx/layers/apz/src/AsyncPanZoomController.h
@@ -343,6 +343,11 @@ public:
    */
   bool IsPannable() const;
 
+  /**
+   * Returns whether this APZC represents a scroll info layer.
+   */
+  bool IsScrollInfoLayer() const;
+
   /**
    * Returns true if the APZC has been flung with a velocity greater than the
    * stop-on-tap fling velocity threshold (which is pref-controlled).