Merge branch 'stable-2.15'

* stable-2.15:
  Reformat all code with Google Java Format
  Eclipse warning: simplify else block

Change-Id: Iecce9bb9dd3a2a9e49e210f2309c3d9072637f88
tree: 2b3aa98d1dc1af5bab8ee2c5ecd0bbe8ec5bce34
  1. src/
  2. .gitignore
  3. BUILD
  4. LICENSE