am 3aa7f5d6: Merge change 3848 into donut

Merge commit '3aa7f5d63706cd031d3eb51bea517c069f10d4be'

* commit '3aa7f5d63706cd031d3eb51bea517c069f10d4be':
  SDK Updater: Revamp ITaskMonitor to be able to create sub monitors.