Add @UnsupportedAppUsage annotations for greylist.
am: 2b0f10a8c1

Change-Id: I873e05daec50ae52868a4d51a3146d6c27b0cb76
diff --git a/binder_bindings/android/os/IUpdateEngineCallback.aidl b/binder_bindings/android/os/IUpdateEngineCallback.aidl
index ee15c8b..4bacf9a 100644
--- a/binder_bindings/android/os/IUpdateEngineCallback.aidl
+++ b/binder_bindings/android/os/IUpdateEngineCallback.aidl
@@ -19,6 +19,7 @@
 /** @hide */
 oneway interface IUpdateEngineCallback {
   /** @hide */
+  @UnsupportedAppUsage
   void onStatusUpdate(int status_code, float percentage);
   /** @hide */
   void onPayloadApplicationComplete(int error_code);