am 051222c2: Merge changes I12d6aa4e,I9e802113,I2b30e0fc,Iaf387b9e

* commit '051222c2436f3cb7fdbc87cc7bc28c5d3495eb28':
  logcat: remove dead label code
  logcat: do not stop on unexpected log ID
  Revert "logd: Add minimum time bucket statistics"
  liblog: Instrument logging of logd write drops