diff --git a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
index 772e5e6..e9a266c 100644
--- a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
+++ b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
@@ -6087,7 +6087,8 @@
         }
 
         @Override
-        public void notifyAppTransitionStarting(SparseIntArray reasons, long timestamp) {
+        public void notifyAppTransitionStarting(SparseIntArray reasons,
+                long timestamp) {
             synchronized (mGlobalLock) {
                 mStackSupervisor.getActivityMetricsLogger().notifyTransitionStarting(
                         reasons, timestamp);
@@ -6095,6 +6096,11 @@
         }
 
         @Override
+        public void notifySingleTaskDisplayDrawn(int displayId) {
+            mTaskChangeNotificationController.notifySingleTaskDisplayDrawn(displayId);
+        }
+
+        @Override
         public void notifyAppTransitionFinished() {
             synchronized (mGlobalLock) {
                 mStackSupervisor.notifyAppTransitionDone();