am d716a45f: am 27b455bb: am 00ea49fc: Merge "Revert "Revert "Revert "Add BacktraceOffline for offline backtracing.""""

* commit 'd716a45f1dfc65399cb1ccdb9c08b07e9571ec81':
  Revert "Revert "Revert "Add BacktraceOffline for offline backtracing."""