Merge "Handle empty input file case in Metadata generation" into main am:...

Merge "Handle empty input file case in Metadata generation" into main am: d5e2717e am: 6c84079d am: 77d480df

Original change: https://android-review.googlesource.com/c/platform/build/+/2835510



Change-Id: I25f7dba9510945a03a74bb7019b0a0e514016e68
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>