am 9fcde2e7: am cb815699: am 00e9db5d: am b23a35a3: am ba84a04a: Merge "docs: update javadocs for gms and gcm" into jb-mr1-dev

# Via Android Git Automerger (4) and others
* commit '9fcde2e7466c29b302cc15ed2d1233f93d7f0b0e':
  docs: update javadocs for gms and gcm