Writing METADATA file for rappor am: 9d7cfa8217 am: 6ceb25daa2 am: 0d07658cd9

Original change: https://android-review.googlesource.com/c/platform/external/rappor/+/2221504

Change-Id: I3bc1ac5d5c22eaea2ae44ebf876e3664d89040c0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>