[incremental/metrics] report uid of last read error

BUG: 187354818
Test: atest service.incremental_test
Change-Id: I632b747440ed4faef31266a3a7b18b7a382ff2cf
diff --git a/services/incremental/IncrementalService.cpp b/services/incremental/IncrementalService.cpp
index 8b816d0..47d59b2 100644
--- a/services/incremental/IncrementalService.cpp
+++ b/services/incremental/IncrementalService.cpp
@@ -2495,6 +2495,9 @@
         const auto& kMetricsLastReadErrorNo =
                 os::incremental::BnIncrementalService::METRICS_LAST_READ_ERROR_NUMBER();
         result->putInt(String16(kMetricsLastReadErrorNo.c_str()), lastReadError->errorNo);
+        const auto& kMetricsLastReadUid =
+                os::incremental::BnIncrementalService::METRICS_LAST_READ_ERROR_UID();
+        result->putInt(String16(kMetricsLastReadUid.c_str()), lastReadError->uid);
     }
     std::unique_lock l(ifs->lock);
     if (!ifs->dataLoaderStub) {