Add triggerPostinstall API to IUpdateEngine.aidl

Test: th
Bug: 377557752
Change-Id: I8cad42ec0eb1d6e359229555fd8cfd3517a69137
diff --git a/aosp/binder_service_android.h b/aosp/binder_service_android.h
index f1ce6b5..25d3c4b 100644
--- a/aosp/binder_service_android.h
+++ b/aosp/binder_service_android.h
@@ -33,8 +33,9 @@
 
 namespace chromeos_update_engine {
 
-class BinderUpdateEngineAndroidService : public android::os::BnUpdateEngine,
-                                         public ServiceObserverInterface {
+class BinderUpdateEngineAndroidService final
+    : public android::os::BnUpdateEngine,
+      public ServiceObserverInterface {
  public:
   explicit BinderUpdateEngineAndroidService(
       ServiceDelegateAndroidInterface* service_delegate);
@@ -79,6 +80,8 @@
       int64_t* return_value) override;
   android::binder::Status cleanupSuccessfulUpdate(
       const android::sp<android::os::IUpdateEngineCallback>& callback) override;
+  ::android::binder::Status triggerPostinstall(
+      const ::android::String16& partition) override;
 
  private:
   // Remove the passed |callback| from the list of registered callbacks. Called