Add missing gRPC include. am: c608187f21

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/24501312

Change-Id: I17fbcdabed1ddb5d3b9c8e8e745c36bdf8de99ad
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/automotive/vehicle/aidl/impl/grpc/GRPCVehicleHardware.h b/automotive/vehicle/aidl/impl/grpc/GRPCVehicleHardware.h
index 90588aa..e740da7 100644
--- a/automotive/vehicle/aidl/impl/grpc/GRPCVehicleHardware.h
+++ b/automotive/vehicle/aidl/impl/grpc/GRPCVehicleHardware.h
@@ -24,6 +24,8 @@
 #include "VehicleServer.grpc.pb.h"
 #include "VehicleServer.pb.h"
 
+#include <grpc++/grpc++.h>
+
 #include <atomic>
 #include <chrono>
 #include <condition_variable>