storage: Add method to AIDL impl am: d963aa4a0f

Original change: https://android-review.googlesource.com/c/trusty/app/storage/+/3353600

Change-Id: I9e2f367f51d8bf084b8cbb71dab21c9ac7397003
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/aidl_service.cpp b/aidl_service.cpp
index 2cd8777..e5caf37 100644
--- a/aidl_service.cpp
+++ b/aidl_service.cpp
@@ -461,6 +461,10 @@
     StorageSession(std::shared_ptr<StorageClientSession> session)
             : session_(std::move(session)) {}
 
+    Status stageChangesForCommitOnAbUpdateComplete() final {
+        return Status::fromExceptionCode(Status::EX_UNSUPPORTED_OPERATION);
+    }
+
     Status commitChanges() final { return endTransactions(true); }
     Status abandonChanges() final { return endTransactions(false); }