diff --git a/update_attempter_android.h b/update_attempter_android.h
index c301e64..106e117 100644
--- a/update_attempter_android.h
+++ b/update_attempter_android.h
@@ -47,7 +47,8 @@
     : public ServiceDelegateAndroidInterface,
       public ActionProcessorDelegate,
       public DownloadActionDelegate,
-      public PostinstallRunnerAction::DelegateInterface {
+      public PostinstallRunnerAction::DelegateInterface,
+      public CleanupPreviousUpdateActionDelegateInterface {
  public:
   using UpdateStatus = update_engine::UpdateStatus;
 
@@ -101,6 +102,9 @@
   // PostinstallRunnerAction::DelegateInterface
   void ProgressUpdate(double progress) override;
 
+  // CleanupPreviousUpdateActionDelegateInterface
+  void OnCleanupProgressUpdate(double progress) override;
+
  private:
   friend class UpdateAttempterAndroidTest;
 
@@ -177,6 +181,9 @@
                                          DeltaArchiveManifest* manifest,
                                          brillo::ErrorPtr* error);
 
+  // Enqueue and run a CleanupPreviousUpdateAction.
+  void ScheduleCleanupPreviousUpdate();
+
   DaemonStateInterface* daemon_state_;
 
   // DaemonStateAndroid pointers.