am 7594767e: am aa318b28: am 879592d8: am bc64716c: am a2739fa7: am a4c5bba0: add document about GoogleApiClient and one about GoogleAuthUtil also remove the Authorization document from the Google Services section. bug:10679818

* commit '7594767e55e011101ed9341f01d40730fdbd4cc7':
  add document about GoogleApiClient and one about GoogleAuthUtil also remove the Authorization document from the Google Services section. bug:10679818