tree c72c976065511da308ab4193dd3cb1b42f8b3c22
parent 12fe03d47058d71e0431cbe5961bab19a5f8ad9a
author Yifan Hong <elsk@google.com> 1580781106 -0800
committer Yifan Hong <elsk@google.com> 1580853684 -0800

libsnapshot::RemoveAllUpdateState log stack

Bug: 148818798
Test: apply OTA but cancel it in the middle, then
      delete /data/misc/update_engine/prefs/*, then
      reapply it again (to trigger CancelUpdate()).
      Stack is dumped.

Change-Id: I2dfb6b7f15b9d5854d0b81ed8ad260538d21c922