[automerger skipped] Mark Android R (rvc-dev-plus-aosp-without-vendor@6692709) as merged am: 6444708c4b -s ours am: a1b0faa1d4 -s ours am: f8683d400e -s ours am: e9e35b9f76 -s ours

am skip reason: Change-Id Iccd71c35ba766fd51f51281c258c6aeb1c1302a5 with SHA-1 4072341397 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/grpc-grpc-java/+/12469910

Change-Id: Id49a20155610e9e750fcf16749abb16623a5e1f5