Merge branch 'stable-2.13'

* stable-2.13:
  Format all Java files with google-java-format

Change-Id: I95ae0817458bed8692e095ab768293837e49eeb2
tree: ac7496f8cce503c986173f0fd9b52647dfa4103a
  1. lib/
  2. src/
  3. .buckconfig
  4. .gitignore
  5. .mailmap
  6. BUCK