Mark Android R (rvc-dev-plus-aosp-without-vendor@6692709) as merged

Bug: 166295507
Merged-In: Ibc3421f2c9664d78f409046e7f7eef098714bf43
Change-Id: I4f33817f35db9a1149959c1ebd1b71abd2c58e90
tree: d4a5b4d07579ccc138d2bd196f7d370e93ee7265
  1. PMC/
  2. sl4n/
  3. UID/
  4. OWNERS
  5. PREUPLOAD.cfg